]> git.sesse.net Git - ffmpeg/blobdiff - libavcodec/mpegvideo.c
explain extradata and pass avctx to av_log's
[ffmpeg] / libavcodec / mpegvideo.c
index 41347a98b07de0b9e1cbe1c9990b2254504ad0a9..a7ae07b412dcf8a4693facb610a860b383cf6950 100644 (file)
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  *
  * 4MV & hq & b-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
  */
+
 /**
  * @file mpegvideo.c
  * The simplest mpeg encoder (well, it was the simplest!).
- */ 
-#include <limits.h>
-#include <math.h> //for PI
+ */
+
 #include "avcodec.h"
 #include "dsputil.h"
 #include "mpegvideo.h"
 #include "faandct.h"
+#include <limits.h>
 
 #ifdef USE_FASTMEMCPY
 #include "fastmemcpy.h"
 #ifdef CONFIG_ENCODERS
 static void encode_picture(MpegEncContext *s, int picture_number);
 #endif //CONFIG_ENCODERS
-static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s, 
+static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
                                    DCTELEM *block, int n, int qscale);
-static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s, 
+static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
                                    DCTELEM *block, int n, int qscale);
 static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
                                    DCTELEM *block, int n, int qscale);
 static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
                                    DCTELEM *block, int n, int qscale);
-static void dct_unquantize_h263_intra_c(MpegEncContext *s, 
+static void dct_unquantize_h263_intra_c(MpegEncContext *s,
                                   DCTELEM *block, int n, int qscale);
-static void dct_unquantize_h263_inter_c(MpegEncContext *s, 
+static void dct_unquantize_h263_inter_c(MpegEncContext *s,
                                   DCTELEM *block, int n, int qscale);
 static void draw_edges_c(uint8_t *buf, int wrap, int width, int height, int w);
 #ifdef CONFIG_ENCODERS
@@ -110,13 +109,14 @@ static uint8_t default_fcode_tab[MAX_MV*2+1];
 enum PixelFormat ff_yuv420p_list[2]= {PIX_FMT_YUV420P, -1};
 
 static void convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
-                           const uint16_t *quant_matrix, int bias, int qmin, int qmax)
+                           const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra)
 {
     int qscale;
+    int shift=0;
 
     for(qscale=qmin; qscale<=qmax; qscale++){
         int i;
-        if (dsp->fdct == ff_jpeg_fdct_islow 
+        if (dsp->fdct == ff_jpeg_fdct_islow
 #ifdef FAAN_POSTSCALE
             || dsp->fdct == ff_faandct
 #endif
@@ -127,8 +127,8 @@ static void convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[
                 /* 19952         <= aanscales[i] * qscale * quant_matrix[i]           <= 249205026 */
                 /* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
                 /* 3444240       >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
-                
-                qmat[qscale][i] = (int)((uint64_t_C(1) << QMAT_SHIFT) / 
+
+                qmat[qscale][i] = (int)((uint64_t_C(1) << QMAT_SHIFT) /
                                 (qscale * quant_matrix[j]));
             }
         } else if (dsp->fdct == fdct_ifast
@@ -142,8 +142,8 @@ static void convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[
                 /* 19952         <= aanscales[i] * qscale * quant_matrix[i]           <= 249205026 */
                 /* (1<<36)/19952 >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= (1<<36)/249205026 */
                 /* 3444240       >= (1<<36)/(aanscales[i] * qscale * quant_matrix[i]) >= 275 */
-                
-                qmat[qscale][i] = (int)((uint64_t_C(1) << (QMAT_SHIFT + 14)) / 
+
+                qmat[qscale][i] = (int)((uint64_t_C(1) << (QMAT_SHIFT + 14)) /
                                 (aanscales[i] * qscale * quant_matrix[j]));
             }
         } else {
@@ -162,13 +162,30 @@ static void convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[
                 qmat16[qscale][1][i]= ROUNDED_DIV(bias<<(16-QUANT_BIAS_SHIFT), qmat16[qscale][0][i]);
             }
         }
+
+        for(i=intra; i<64; i++){
+            int64_t max= 8191;
+            if (dsp->fdct == fdct_ifast
+#ifndef FAAN_POSTSCALE
+                   || dsp->fdct == ff_faandct
+#endif
+                   ) {
+                max= (8191LL*aanscales[i]) >> 14;
+            }
+            while(((max * qmat[qscale][i]) >> shift) > INT_MAX){
+                shift++;
+            }
+        }
+    }
+    if(shift){
+        av_log(NULL, AV_LOG_INFO, "Warning, QMAT_SHIFT is larger then %d, overflows possible\n", QMAT_SHIFT - shift);
     }
 }
 
 static inline void update_qscale(MpegEncContext *s){
     s->qscale= (s->lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
     s->qscale= clip(s->qscale, s->avctx->qmin, s->avctx->qmax);
-    
+
     s->lambda2= (s->lambda*s->lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
 }
 #endif //CONFIG_ENCODERS
@@ -176,7 +193,7 @@ static inline void update_qscale(MpegEncContext *s){
 void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable){
     int i;
     int end;
-    
+
     st->scantable= src_scantable;
 
     for(i=0; i<64; i++){
@@ -187,7 +204,7 @@ void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_s
         st->inverse[j] = i;
 #endif
     }
-    
+
     end=-1;
     for(i=0; i<64; i++){
         int j;
@@ -211,6 +228,36 @@ void ff_write_quant_matrix(PutBitContext *pb, int16_t *matrix){
 }
 #endif //CONFIG_ENCODERS
 
+const uint8_t *ff_find_start_code(const uint8_t * restrict p, const uint8_t *end, uint32_t * restrict state){
+    int i;
+
+    assert(p<=end);
+    if(p>=end)
+        return end;
+
+    for(i=0; i<3; i++){
+        uint32_t tmp= *state << 8;
+        *state= tmp + *(p++);
+        if(tmp == 0x100 || p==end)
+            return p;
+    }
+
+    while(p<end){
+        if     (p[-1] > 1      ) p+= 3;
+        else if(p[-2]          ) p+= 2;
+        else if(p[-3]|(p[-1]-1)) p++;
+        else{
+            p++;
+            break;
+        }
+    }
+
+    p= FFMIN(p, end)-4;
+    *state=  be2me_32(unaligned32(p));
+
+    return p+4;
+}
+
 /* init common dct for both encoder and decoder */
 int DCT_common_init(MpegEncContext *s)
 {
@@ -224,8 +271,8 @@ int DCT_common_init(MpegEncContext *s)
 #ifdef CONFIG_ENCODERS
     s->dct_quantize= dct_quantize_c;
     s->denoise_dct= denoise_dct_c;
-#endif
-        
+#endif //CONFIG_ENCODERS
+
 #ifdef HAVE_MMX
     MPV_common_init_mmx(s);
 #endif
@@ -255,7 +302,7 @@ int DCT_common_init(MpegEncContext *s)
 #endif //CONFIG_ENCODERS
 
     /* load & permutate scantables
-       note: only wmv uses differnt ones 
+       note: only wmv uses different ones
     */
     if(s->alternate_scan){
         ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable  , ff_alternate_vertical_scan);
@@ -267,8 +314,6 @@ int DCT_common_init(MpegEncContext *s)
     ff_init_scantable(s->dsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan);
     ff_init_scantable(s->dsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
 
-    s->picture_structure= PICT_FRAME;
-    
     return 0;
 }
 
@@ -277,7 +322,9 @@ static void copy_picture(Picture *dst, Picture *src){
     dst->type= FF_BUFFER_TYPE_COPY;
 }
 
-static void copy_picture_attributes(AVFrame *dst, AVFrame *src){
+static void copy_picture_attributes(MpegEncContext *s, AVFrame *dst, AVFrame *src){
+    int i;
+
     dst->pict_type              = src->pict_type;
     dst->quality                = src->quality;
     dst->coded_picture_number   = src->coded_picture_number;
@@ -286,6 +333,32 @@ static void copy_picture_attributes(AVFrame *dst, AVFrame *src){
     dst->pts                    = src->pts;
     dst->interlaced_frame       = src->interlaced_frame;
     dst->top_field_first        = src->top_field_first;
+
+    if(s->avctx->me_threshold){
+        if(!src->motion_val[0])
+            av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_val not set!\n");
+        if(!src->mb_type)
+            av_log(s->avctx, AV_LOG_ERROR, "AVFrame.mb_type not set!\n");
+        if(!src->ref_index[0])
+            av_log(s->avctx, AV_LOG_ERROR, "AVFrame.ref_index not set!\n");
+        if(src->motion_subsample_log2 != dst->motion_subsample_log2)
+            av_log(s->avctx, AV_LOG_ERROR, "AVFrame.motion_subsample_log2 doesn't match! (%d!=%d)\n",
+            src->motion_subsample_log2, dst->motion_subsample_log2);
+
+        memcpy(dst->mb_type, src->mb_type, s->mb_stride * s->mb_height * sizeof(dst->mb_type[0]));
+
+        for(i=0; i<2; i++){
+            int stride= ((16*s->mb_width )>>src->motion_subsample_log2) + 1;
+            int height= ((16*s->mb_height)>>src->motion_subsample_log2);
+
+            if(src->motion_val[i] && src->motion_val[i] != dst->motion_val[i]){
+                memcpy(dst->motion_val[i], src->motion_val[i], 2*stride*height*sizeof(int16_t));
+            }
+            if(src->ref_index[i] && src->ref_index[i] != dst->ref_index[i]){
+                memcpy(dst->ref_index[i], src->ref_index[i], s->b8_stride*2*s->mb_height*sizeof(int8_t));
+            }
+        }
+    }
 }
 
 /**
@@ -298,20 +371,20 @@ static int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
     const int b8_array_size= s->b8_stride*s->mb_height*2;
     const int b4_array_size= s->b4_stride*s->mb_height*4;
     int i;
-    
+
     if(shared){
         assert(pic->data[0]);
         assert(pic->type == 0 || pic->type == FF_BUFFER_TYPE_SHARED);
         pic->type= FF_BUFFER_TYPE_SHARED;
     }else{
         int r;
-        
+
         assert(!pic->data[0]);
-        
+
         r= s->avctx->get_buffer(s->avctx, (AVFrame*)pic);
-        
+
         if(r<0 || !pic->age || !pic->type || !pic->data[0]){
-           av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %d %d %p)\n", r, pic->age, pic->type, pic->data[0]);
+            av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %d %d %p)\n", r, pic->age, pic->type, pic->data[0]);
             return -1;
         }
 
@@ -321,16 +394,16 @@ static int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
         }
 
         if(pic->linesize[1] != pic->linesize[2]){
-            av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (uv stride missmatch)\n");
+            av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (uv stride mismatch)\n");
             return -1;
         }
 
         s->linesize  = pic->linesize[0];
         s->uvlinesize= pic->linesize[1];
     }
-    
+
     if(pic->qscale_table==NULL){
-        if (s->encoding) {        
+        if (s->encoding) {
             CHECKED_ALLOCZ(pic->mb_var   , mb_array_size * sizeof(int16_t))
             CHECKED_ALLOCZ(pic->mc_mb_var, mb_array_size * sizeof(int16_t))
             CHECKED_ALLOCZ(pic->mb_mean  , mb_array_size * sizeof(int8_t))
@@ -342,18 +415,22 @@ static int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
         pic->mb_type= pic->mb_type_base + s->mb_stride+1;
         if(s->out_format == FMT_H264){
             for(i=0; i<2; i++){
-                CHECKED_ALLOCZ(pic->motion_val_base[i], 2 * (b4_array_size+1)  * sizeof(int16_t))
-                pic->motion_val[i]= pic->motion_val_base[i]+1;
-                CHECKED_ALLOCZ(pic->ref_index[i] , b8_array_size * sizeof(uint8_t))
+                CHECKED_ALLOCZ(pic->motion_val_base[i], 2 * (b4_array_size+4)  * sizeof(int16_t))
+                pic->motion_val[i]= pic->motion_val_base[i]+4;
+                CHECKED_ALLOCZ(pic->ref_index[i], b8_array_size * sizeof(uint8_t))
             }
             pic->motion_subsample_log2= 2;
         }else if(s->out_format == FMT_H263 || s->encoding || (s->avctx->debug&FF_DEBUG_MV) || (s->avctx->debug_mv)){
             for(i=0; i<2; i++){
-                CHECKED_ALLOCZ(pic->motion_val_base[i], 2 * (b8_array_size+1) * sizeof(int16_t)*2) //FIXME
-                pic->motion_val[i]= pic->motion_val_base[i]+1;
+                CHECKED_ALLOCZ(pic->motion_val_base[i], 2 * (b8_array_size+4) * sizeof(int16_t))
+                pic->motion_val[i]= pic->motion_val_base[i]+4;
+                CHECKED_ALLOCZ(pic->ref_index[i], b8_array_size * sizeof(uint8_t))
             }
             pic->motion_subsample_log2= 3;
         }
+        if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
+            CHECKED_ALLOCZ(pic->dct_coeff, 64 * mb_array_size * sizeof(DCTELEM)*6)
+        }
         pic->qstride= s->mb_stride;
         CHECKED_ALLOCZ(pic->pan_scan , 1 * sizeof(AVPanScan))
     }
@@ -362,8 +439,8 @@ static int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
     memmove(s->prev_pict_types+1, s->prev_pict_types, PREV_PICT_TYPES_BUFFER_SIZE-1);
     s->prev_pict_types[0]= s->pict_type;
     if(pic->age < PREV_PICT_TYPES_BUFFER_SIZE && s->prev_pict_types[pic->age] == B_TYPE)
-        pic->age= INT_MAX; // skiped MBs in b frames are quite rare in mpeg1/2 and its a bit tricky to skip them anyway
-    
+        pic->age= INT_MAX; // skipped MBs in b frames are quite rare in mpeg1/2 and its a bit tricky to skip them anyway
+
     return 0;
 fail: //for the CHECKED_ALLOCZ macro
     return -1;
@@ -385,27 +462,197 @@ static void free_picture(MpegEncContext *s, Picture *pic){
     av_freep(&pic->mbskip_table);
     av_freep(&pic->qscale_table);
     av_freep(&pic->mb_type_base);
+    av_freep(&pic->dct_coeff);
     av_freep(&pic->pan_scan);
     pic->mb_type= NULL;
     for(i=0; i<2; i++){
         av_freep(&pic->motion_val_base[i]);
         av_freep(&pic->ref_index[i]);
     }
-    
+
     if(pic->type == FF_BUFFER_TYPE_SHARED){
         for(i=0; i<4; i++){
             pic->base[i]=
             pic->data[i]= NULL;
         }
-        pic->type= 0;        
+        pic->type= 0;
     }
 }
 
-/* init common structure for both encoder and decoder */
+static int init_duplicate_context(MpegEncContext *s, MpegEncContext *base){
+    int i;
+
+    // edge emu needs blocksize + filter length - 1 (=17x17 for halfpel / 21x21 for h264)
+    CHECKED_ALLOCZ(s->allocated_edge_emu_buffer, (s->width+64)*2*17*2); //(width + edge + align)*interlaced*MBsize*tolerance
+    s->edge_emu_buffer= s->allocated_edge_emu_buffer + (s->width+64)*2*17;
+
+     //FIXME should be linesize instead of s->width*2 but that isnt known before get_buffer()
+    CHECKED_ALLOCZ(s->me.scratchpad,  (s->width+64)*4*16*2*sizeof(uint8_t))
+    s->rd_scratchpad=   s->me.scratchpad;
+    s->b_scratchpad=    s->me.scratchpad;
+    s->obmc_scratchpad= s->me.scratchpad + 16;
+    if (s->encoding) {
+        CHECKED_ALLOCZ(s->me.map      , ME_MAP_SIZE*sizeof(uint32_t))
+        CHECKED_ALLOCZ(s->me.score_map, ME_MAP_SIZE*sizeof(uint32_t))
+        if(s->avctx->noise_reduction){
+            CHECKED_ALLOCZ(s->dct_error_sum, 2 * 64 * sizeof(int))
+        }
+    }
+    CHECKED_ALLOCZ(s->blocks, 64*12*2 * sizeof(DCTELEM))
+    s->block= s->blocks[0];
+
+    for(i=0;i<12;i++){
+        s->pblocks[i] = (short *)(&s->block[i]);
+    }
+    return 0;
+fail:
+    return -1; //free() through MPV_common_end()
+}
+
+static void free_duplicate_context(MpegEncContext *s){
+    if(s==NULL) return;
+
+    av_freep(&s->allocated_edge_emu_buffer); s->edge_emu_buffer= NULL;
+    av_freep(&s->me.scratchpad);
+    s->rd_scratchpad=
+    s->b_scratchpad=
+    s->obmc_scratchpad= NULL;
+
+    av_freep(&s->dct_error_sum);
+    av_freep(&s->me.map);
+    av_freep(&s->me.score_map);
+    av_freep(&s->blocks);
+    s->block= NULL;
+}
+
+static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src){
+#define COPY(a) bak->a= src->a
+    COPY(allocated_edge_emu_buffer);
+    COPY(edge_emu_buffer);
+    COPY(me.scratchpad);
+    COPY(rd_scratchpad);
+    COPY(b_scratchpad);
+    COPY(obmc_scratchpad);
+    COPY(me.map);
+    COPY(me.score_map);
+    COPY(blocks);
+    COPY(block);
+    COPY(start_mb_y);
+    COPY(end_mb_y);
+    COPY(me.map_generation);
+    COPY(pb);
+    COPY(dct_error_sum);
+    COPY(dct_count[0]);
+    COPY(dct_count[1]);
+#undef COPY
+}
+
+void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src){
+    MpegEncContext bak;
+    int i;
+    //FIXME copy only needed parts
+//START_TIMER
+    backup_duplicate_context(&bak, dst);
+    memcpy(dst, src, sizeof(MpegEncContext));
+    backup_duplicate_context(dst, &bak);
+    for(i=0;i<12;i++){
+        dst->pblocks[i] = (short *)(&dst->block[i]);
+    }
+//STOP_TIMER("update_duplicate_context") //about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads
+}
+
+static void update_duplicate_context_after_me(MpegEncContext *dst, MpegEncContext *src){
+#define COPY(a) dst->a= src->a
+    COPY(pict_type);
+    COPY(current_picture);
+    COPY(f_code);
+    COPY(b_code);
+    COPY(qscale);
+    COPY(lambda);
+    COPY(lambda2);
+    COPY(picture_in_gop_number);
+    COPY(gop_picture_number);
+    COPY(frame_pred_frame_dct); //FIXME don't set in encode_header
+    COPY(progressive_frame); //FIXME don't set in encode_header
+    COPY(partitioned_frame); //FIXME don't set in encode_header
+#undef COPY
+}
+
+/**
+ * sets the given MpegEncContext to common defaults (same for encoding and decoding).
+ * the changed fields will not depend upon the prior state of the MpegEncContext.
+ */
+static void MPV_common_defaults(MpegEncContext *s){
+    s->y_dc_scale_table=
+    s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
+    s->chroma_qscale_table= ff_default_chroma_qscale_table;
+    s->progressive_frame= 1;
+    s->progressive_sequence= 1;
+    s->picture_structure= PICT_FRAME;
+
+    s->coded_picture_number = 0;
+    s->picture_number = 0;
+    s->input_picture_number = 0;
+
+    s->picture_in_gop_number = 0;
+
+    s->f_code = 1;
+    s->b_code = 1;
+}
+
+/**
+ * sets the given MpegEncContext to defaults for decoding.
+ * the changed fields will not depend upon the prior state of the MpegEncContext.
+ */
+void MPV_decode_defaults(MpegEncContext *s){
+    MPV_common_defaults(s);
+}
+
+/**
+ * sets the given MpegEncContext to defaults for encoding.
+ * the changed fields will not depend upon the prior state of the MpegEncContext.
+ */
+
+#ifdef CONFIG_ENCODERS
+static void MPV_encode_defaults(MpegEncContext *s){
+    static int done=0;
+
+    MPV_common_defaults(s);
+
+    if(!done){
+        int i;
+        done=1;
+
+        default_mv_penalty= av_mallocz( sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1) );
+        memset(default_fcode_tab , 0, sizeof(uint8_t)*(2*MAX_MV+1));
+
+        for(i=-16; i<16; i++){
+            default_fcode_tab[i + MAX_MV]= 1;
+        }
+    }
+    s->me.mv_penalty= default_mv_penalty;
+    s->fcode_tab= default_fcode_tab;
+}
+#endif //CONFIG_ENCODERS
+
+/**
+ * init common structure for both encoder and decoder.
+ * this assumes that some variables like width/height are already set
+ */
 int MPV_common_init(MpegEncContext *s)
 {
     int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y;
 
+    s->mb_height = (s->height + 15) / 16;
+
+    if(s->avctx->thread_count > MAX_THREADS || (s->avctx->thread_count > s->mb_height && s->mb_height)){
+        av_log(s->avctx, AV_LOG_ERROR, "too many threads\n");
+        return -1;
+    }
+
+    if((s->width || s->height) && avcodec_check_dimensions(s->avctx, s->width, s->height))
+        return -1;
+
     dsputil_init(&s->dsp, s->avctx);
     DCT_common_init(s);
 
@@ -413,52 +660,44 @@ int MPV_common_init(MpegEncContext *s)
     s->flags2= s->avctx->flags2;
 
     s->mb_width  = (s->width  + 15) / 16;
-    s->mb_height = (s->height + 15) / 16;
     s->mb_stride = s->mb_width + 1;
     s->b8_stride = s->mb_width*2 + 1;
     s->b4_stride = s->mb_width*4 + 1;
     mb_array_size= s->mb_height * s->mb_stride;
     mv_table_size= (s->mb_height+2) * s->mb_stride + 1;
 
+    /* set chroma shifts */
+    avcodec_get_chroma_sub_sample(s->avctx->pix_fmt,&(s->chroma_x_shift),
+                                                    &(s->chroma_y_shift) );
+
     /* set default edge pos, will be overriden in decode_header if needed */
     s->h_edge_pos= s->mb_width*16;
     s->v_edge_pos= s->mb_height*16;
 
     s->mb_num = s->mb_width * s->mb_height;
-    
+
     s->block_wrap[0]=
     s->block_wrap[1]=
     s->block_wrap[2]=
-    s->block_wrap[3]= s->mb_width*2 + 2;
+    s->block_wrap[3]= s->b8_stride;
     s->block_wrap[4]=
-    s->block_wrap[5]= s->mb_width + 2;
-
-    s->y_dc_scale_table=
-    s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
-    s->chroma_qscale_table= ff_default_chroma_qscale_table;
-    if (!s->encoding)
-        s->progressive_sequence= 1;
-    s->progressive_frame= 1;
-    s->coded_picture_number = 0;
+    s->block_wrap[5]= s->mb_stride;
 
-    y_size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2);
-    c_size = (s->mb_width + 2) * (s->mb_height + 2);
+    y_size = s->b8_stride * (2 * s->mb_height + 1);
+    c_size = s->mb_stride * (s->mb_height + 1);
     yc_size = y_size + 2 * c_size;
 
     /* convert fourcc to upper case */
-    s->avctx->codec_tag=   toupper( s->avctx->codec_tag     &0xFF)          
+    s->avctx->codec_tag=   toupper( s->avctx->codec_tag     &0xFF)
                         + (toupper((s->avctx->codec_tag>>8 )&0xFF)<<8 )
-                        + (toupper((s->avctx->codec_tag>>16)&0xFF)<<16) 
+                        + (toupper((s->avctx->codec_tag>>16)&0xFF)<<16)
                         + (toupper((s->avctx->codec_tag>>24)&0xFF)<<24);
 
-    s->avctx->stream_codec_tag=   toupper( s->avctx->stream_codec_tag     &0xFF)          
+    s->avctx->stream_codec_tag=   toupper( s->avctx->stream_codec_tag     &0xFF)
                                + (toupper((s->avctx->stream_codec_tag>>8 )&0xFF)<<8 )
-                               + (toupper((s->avctx->stream_codec_tag>>16)&0xFF)<<16) 
+                               + (toupper((s->avctx->stream_codec_tag>>16)&0xFF)<<16)
                                + (toupper((s->avctx->stream_codec_tag>>24)&0xFF)<<24);
 
-    CHECKED_ALLOCZ(s->allocated_edge_emu_buffer, (s->width+64)*2*17*2); //(width + edge + align)*interlaced*MBsize*tolerance
-    s->edge_emu_buffer= s->allocated_edge_emu_buffer + (s->width+64)*2*17;
-
     s->avctx->coded_frame= (AVFrame*)&s->current_picture;
 
     CHECKED_ALLOCZ(s->mb_index2xy, (s->mb_num+1)*sizeof(int)) //error ressilience code looks cleaner with this
@@ -468,7 +707,7 @@ int MPV_common_init(MpegEncContext *s)
         }
     }
     s->mb_index2xy[ s->mb_height*s->mb_width ] = (s->mb_height-1)*s->mb_stride + s->mb_width; //FIXME really needed?
-    
+
     if (s->encoding) {
         /* Allocate MV tables */
         CHECKED_ALLOCZ(s->p_mv_table_base            , mv_table_size * 2 * sizeof(int16_t))
@@ -484,17 +723,6 @@ int MPV_common_init(MpegEncContext *s)
         s->b_bidir_back_mv_table= s->b_bidir_back_mv_table_base + s->mb_stride + 1;
         s->b_direct_mv_table    = s->b_direct_mv_table_base     + s->mb_stride + 1;
 
-        //FIXME should be linesize instead of s->width*2 but that isnt known before get_buffer()
-        CHECKED_ALLOCZ(s->me.scratchpad,  s->width*2*16*3*sizeof(uint8_t)) 
-        
-        CHECKED_ALLOCZ(s->me.map      , ME_MAP_SIZE*sizeof(uint32_t))
-        CHECKED_ALLOCZ(s->me.score_map, ME_MAP_SIZE*sizeof(uint32_t))
-
-        if(s->codec_id==CODEC_ID_MPEG4){
-            CHECKED_ALLOCZ(s->tex_pb_buffer, PB_BUFFER_SIZE);
-            CHECKED_ALLOCZ(   s->pb2_buffer, PB_BUFFER_SIZE);
-        }
-        
         if(s->msmpeg4_version){
             CHECKED_ALLOCZ(s->ac_stats, 2*2*(MAX_LEVEL+1)*(MAX_RUN+1)*2*sizeof(int));
         }
@@ -502,27 +730,24 @@ int MPV_common_init(MpegEncContext *s)
 
         /* Allocate MB type table */
         CHECKED_ALLOCZ(s->mb_type  , mb_array_size * sizeof(uint16_t)) //needed for encoding
-        
+
         CHECKED_ALLOCZ(s->lambda_table, mb_array_size * sizeof(int))
-        
+
         CHECKED_ALLOCZ(s->q_intra_matrix, 64*32 * sizeof(int))
         CHECKED_ALLOCZ(s->q_inter_matrix, 64*32 * sizeof(int))
         CHECKED_ALLOCZ(s->q_intra_matrix16, 64*32*2 * sizeof(uint16_t))
         CHECKED_ALLOCZ(s->q_inter_matrix16, 64*32*2 * sizeof(uint16_t))
         CHECKED_ALLOCZ(s->input_picture, MAX_PICTURE_COUNT * sizeof(Picture*))
         CHECKED_ALLOCZ(s->reordered_input_picture, MAX_PICTURE_COUNT * sizeof(Picture*))
-        
+
         if(s->avctx->noise_reduction){
-            CHECKED_ALLOCZ(s->dct_error_sum, 2 * 64 * sizeof(int))
             CHECKED_ALLOCZ(s->dct_offset, 2 * 64 * sizeof(uint16_t))
         }
     }
-    CHECKED_ALLOCZ(s->blocks, 64*6*2 * sizeof(DCTELEM))
-        
     CHECKED_ALLOCZ(s->picture, MAX_PICTURE_COUNT * sizeof(Picture))
 
     CHECKED_ALLOCZ(s->error_status_table, mb_array_size*sizeof(uint8_t))
-    
+
     if(s->codec_id==CODEC_ID_MPEG4 || (s->flags & CODEC_FLAG_INTERLACED_ME)){
         /* interlaced direct mode decoding tables */
             for(i=0; i<2; i++){
@@ -541,48 +766,39 @@ int MPV_common_init(MpegEncContext *s)
     }
     if (s->out_format == FMT_H263) {
         /* ac values */
-        CHECKED_ALLOCZ(s->ac_val[0], yc_size * sizeof(int16_t) * 16);
-        s->ac_val[1] = s->ac_val[0] + y_size;
+        CHECKED_ALLOCZ(s->ac_val_base, yc_size * sizeof(int16_t) * 16);
+        s->ac_val[0] = s->ac_val_base + s->b8_stride + 1;
+        s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1;
         s->ac_val[2] = s->ac_val[1] + c_size;
-        
+
         /* cbp values */
-        CHECKED_ALLOCZ(s->coded_block, y_size);
-        
-        /* divx501 bitstream reorder buffer */
-        CHECKED_ALLOCZ(s->bitstream_buffer, BITSTREAM_BUFFER_SIZE);
+        CHECKED_ALLOCZ(s->coded_block_base, y_size);
+        s->coded_block= s->coded_block_base + s->b8_stride + 1;
 
         /* cbp, ac_pred, pred_dir */
         CHECKED_ALLOCZ(s->cbp_table  , mb_array_size * sizeof(uint8_t))
         CHECKED_ALLOCZ(s->pred_dir_table, mb_array_size * sizeof(uint8_t))
     }
-    
+
     if (s->h263_pred || s->h263_plus || !s->encoding) {
         /* dc values */
         //MN: we need these for error resilience of intra-frames
-        CHECKED_ALLOCZ(s->dc_val[0], yc_size * sizeof(int16_t));
-        s->dc_val[1] = s->dc_val[0] + y_size;
+        CHECKED_ALLOCZ(s->dc_val_base, yc_size * sizeof(int16_t));
+        s->dc_val[0] = s->dc_val_base + s->b8_stride + 1;
+        s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1;
         s->dc_val[2] = s->dc_val[1] + c_size;
         for(i=0;i<yc_size;i++)
-            s->dc_val[0][i] = 1024;
+            s->dc_val_base[i] = 1024;
     }
 
     /* which mb is a intra block */
     CHECKED_ALLOCZ(s->mbintra_table, mb_array_size);
     memset(s->mbintra_table, 1, mb_array_size);
-    
-    /* default structure is frame */
-    s->picture_structure = PICT_FRAME;
-    
+
     /* init macroblock skip table */
     CHECKED_ALLOCZ(s->mbskip_table, mb_array_size+2);
     //Note the +1 is for a quicker mpeg4 slice_end detection
     CHECKED_ALLOCZ(s->prev_pict_types, PREV_PICT_TYPES_BUFFER_SIZE);
-    
-    s->block= s->blocks[0];
-
-    for(i=0;i<12;i++){
-        s->pblocks[i] = (short *)(&s->block[i]);
-    }
 
     s->parse_context.state= -1;
     if((s->avctx->debug&(FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) || (s->avctx->debug_mv)){
@@ -592,20 +808,38 @@ int MPV_common_init(MpegEncContext *s)
     }
 
     s->context_initialized = 1;
+
+    s->thread_context[0]= s;
+    for(i=1; i<s->avctx->thread_count; i++){
+        s->thread_context[i]= av_malloc(sizeof(MpegEncContext));
+        memcpy(s->thread_context[i], s, sizeof(MpegEncContext));
+    }
+
+    for(i=0; i<s->avctx->thread_count; i++){
+        if(init_duplicate_context(s->thread_context[i], s) < 0)
+           goto fail;
+        s->thread_context[i]->start_mb_y= (s->mb_height*(i  ) + s->avctx->thread_count/2) / s->avctx->thread_count;
+        s->thread_context[i]->end_mb_y  = (s->mb_height*(i+1) + s->avctx->thread_count/2) / s->avctx->thread_count;
+    }
+
     return 0;
  fail:
     MPV_common_end(s);
     return -1;
 }
 
-
-//extern int sads;
-
 /* init common structure for both encoder and decoder */
 void MPV_common_end(MpegEncContext *s)
 {
     int i, j, k;
 
+    for(i=0; i<s->avctx->thread_count; i++){
+        free_duplicate_context(s->thread_context[i]);
+    }
+    for(i=1; i<s->avctx->thread_count; i++){
+        av_freep(&s->thread_context[i]);
+    }
+
     av_freep(&s->parse_context.buffer);
     s->parse_context.buffer_size=0;
 
@@ -634,23 +868,19 @@ void MPV_common_end(MpegEncContext *s)
         }
         av_freep(&s->p_field_select_table[i]);
     }
-    
-    av_freep(&s->dc_val[0]);
-    av_freep(&s->ac_val[0]);
-    av_freep(&s->coded_block);
+
+    av_freep(&s->dc_val_base);
+    av_freep(&s->ac_val_base);
+    av_freep(&s->coded_block_base);
     av_freep(&s->mbintra_table);
     av_freep(&s->cbp_table);
     av_freep(&s->pred_dir_table);
-    av_freep(&s->me.scratchpad);
-    av_freep(&s->me.map);
-    av_freep(&s->me.score_map);
-    
+
     av_freep(&s->mbskip_table);
     av_freep(&s->prev_pict_types);
     av_freep(&s->bitstream_buffer);
-    av_freep(&s->tex_pb_buffer);
-    av_freep(&s->pb2_buffer);
-    av_freep(&s->allocated_edge_emu_buffer); s->edge_emu_buffer= NULL;
+    s->allocated_bitstream_buffer_size=0;
+
     av_freep(&s->avctx->stats_out);
     av_freep(&s->ac_stats);
     av_freep(&s->error_status_table);
@@ -660,10 +890,8 @@ void MPV_common_end(MpegEncContext *s)
     av_freep(&s->q_inter_matrix);
     av_freep(&s->q_intra_matrix16);
     av_freep(&s->q_inter_matrix16);
-    av_freep(&s->blocks);
     av_freep(&s->input_picture);
     av_freep(&s->reordered_input_picture);
-    av_freep(&s->dct_error_sum);
     av_freep(&s->dct_offset);
 
     if(s->picture){
@@ -672,14 +900,16 @@ void MPV_common_end(MpegEncContext *s)
         }
     }
     av_freep(&s->picture);
-    avcodec_default_free_buffers(s->avctx);
     s->context_initialized = 0;
     s->last_picture_ptr=
     s->next_picture_ptr=
     s->current_picture_ptr= NULL;
+    s->linesize= s->uvlinesize= 0;
+
     for(i=0; i<3; i++)
-        if (s->visualization_buffer[i])
-            av_free(s->visualization_buffer[i]);
+        av_freep(&s->visualization_buffer[i]);
+
+    avcodec_default_free_buffers(s->avctx);
 }
 
 #ifdef CONFIG_ENCODERS
@@ -688,16 +918,33 @@ void MPV_common_end(MpegEncContext *s)
 int MPV_encode_init(AVCodecContext *avctx)
 {
     MpegEncContext *s = avctx->priv_data;
-    int i, dummy;
+    int i;
     int chroma_h_shift, chroma_v_shift;
 
-    avctx->pix_fmt = PIX_FMT_YUV420P; // FIXME
+    MPV_encode_defaults(s);
+
+    if(avctx->pix_fmt != PIX_FMT_YUVJ420P && avctx->pix_fmt != PIX_FMT_YUV420P){
+        av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
+        return -1;
+    }
+
+    if(avctx->codec_id == CODEC_ID_MJPEG || avctx->codec_id == CODEC_ID_LJPEG){
+        if(avctx->strict_std_compliance>FF_COMPLIANCE_INOFFICIAL && avctx->pix_fmt != PIX_FMT_YUVJ420P){
+            av_log(avctx, AV_LOG_ERROR, "colorspace not supported in jpeg\n");
+            return -1;
+        }
+    }else{
+        if(avctx->strict_std_compliance>FF_COMPLIANCE_INOFFICIAL && avctx->pix_fmt != PIX_FMT_YUV420P){
+            av_log(avctx, AV_LOG_ERROR, "colorspace not supported\n");
+            return -1;
+        }
+    }
 
     s->bit_rate = avctx->bit_rate;
     s->width = avctx->width;
     s->height = avctx->height;
     if(avctx->gop_size > 600){
-       av_log(avctx, AV_LOG_ERROR, "Warning keyframe interval too large! reducing it ...\n");
+        av_log(avctx, AV_LOG_ERROR, "Warning keyframe interval too large! reducing it ...\n");
         avctx->gop_size=600;
     }
     s->gop_size = avctx->gop_size;
@@ -713,6 +960,8 @@ int MPV_encode_init(AVCodecContext *avctx)
     s->quarter_sample= (avctx->flags & CODEC_FLAG_QPEL)!=0;
     s->mpeg_quant= avctx->mpeg_quant;
     s->rtp_mode= !!avctx->rtp_payload_size;
+    s->intra_dc_precision= avctx->intra_dc_precision;
+    s->user_specified_pts = AV_NOPTS_VALUE;
 
     if (s->gop_size <= 1) {
         s->intra_only = 1;
@@ -725,15 +974,16 @@ int MPV_encode_init(AVCodecContext *avctx)
 
     /* Fixed QSCALE */
     s->fixed_qscale = !!(avctx->flags & CODEC_FLAG_QSCALE);
-    
+
     s->adaptive_quant= (   s->avctx->lumi_masking
                         || s->avctx->dark_masking
-                        || s->avctx->temporal_cplx_masking 
+                        || s->avctx->temporal_cplx_masking
                         || s->avctx->spatial_cplx_masking
                         || s->avctx->p_masking
+                        || s->avctx->border_masking
                         || (s->flags&CODEC_FLAG_QP_RD))
                        && !s->fixed_qscale;
-    
+
     s->obmc= !!(s->flags & CODEC_FLAG_OBMC);
     s->loop_filter= !!(s->flags & CODEC_FLAG_LOOP_FILTER);
     s->alternate_scan= !!(s->flags & CODEC_FLAG_ALT_SCAN);
@@ -741,28 +991,45 @@ int MPV_encode_init(AVCodecContext *avctx)
     if(avctx->rc_max_rate && !avctx->rc_buffer_size){
         av_log(avctx, AV_LOG_ERROR, "a vbv buffer size is needed, for encoding with a maximum bitrate\n");
         return -1;
-    }    
+    }
 
     if(avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate){
-        av_log(avctx, AV_LOG_INFO, "Warning min_rate > 0 but min_rate != max_rate isnt recommanded!\n");
-    }    
-        
-    if((s->flags & CODEC_FLAG_4MV) && s->codec_id != CODEC_ID_MPEG4 
+        av_log(avctx, AV_LOG_INFO, "Warning min_rate > 0 but min_rate != max_rate isn't recommended!\n");
+    }
+
+    if(avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate){
+        av_log(avctx, AV_LOG_INFO, "bitrate below min bitrate\n");
+        return -1;
+    }
+
+    if(avctx->rc_max_rate && avctx->rc_max_rate < avctx->bit_rate){
+        av_log(avctx, AV_LOG_INFO, "bitrate above max bitrate\n");
+        return -1;
+    }
+
+    if(   s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate
+       && (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO)
+       && 90000LL * (avctx->rc_buffer_size-1) > s->avctx->rc_max_rate*0xFFFFLL){
+
+        av_log(avctx, AV_LOG_INFO, "Warning vbv_delay will be set to 0xFFFF (=VBR) as the specified vbv buffer is too large for the given bitrate!\n");
+    }
+
+    if((s->flags & CODEC_FLAG_4MV) && s->codec_id != CODEC_ID_MPEG4
        && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P && s->codec_id != CODEC_ID_FLV1){
         av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n");
         return -1;
     }
-        
+
     if(s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE){
-        av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with simple mb decission\n");
+        av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with simple mb decision\n");
         return -1;
     }
-    
+
     if(s->obmc && s->codec_id != CODEC_ID_H263 && s->codec_id != CODEC_ID_H263P){
         av_log(avctx, AV_LOG_ERROR, "OBMC is only supported with H263(+)\n");
         return -1;
     }
-    
+
     if(s->quarter_sample && s->codec_id != CODEC_ID_MPEG4){
         av_log(avctx, AV_LOG_ERROR, "qpel not supported by codec\n");
         return -1;
@@ -772,17 +1039,23 @@ int MPV_encode_init(AVCodecContext *avctx)
         av_log(avctx, AV_LOG_ERROR, "data partitioning not supported by codec\n");
         return -1;
     }
-    
+
     if(s->max_b_frames && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO){
         av_log(avctx, AV_LOG_ERROR, "b frames not supported by codec\n");
         return -1;
     }
-    
+
+    if((s->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME|CODEC_FLAG_ALT_SCAN))
+       && s->codec_id != CODEC_ID_MPEG4 && s->codec_id != CODEC_ID_MPEG2VIDEO){
+        av_log(avctx, AV_LOG_ERROR, "interlacing not supported by codec\n");
+        return -1;
+    }
+
     if(s->mpeg_quant && s->codec_id != CODEC_ID_MPEG4){ //FIXME mpeg2 uses that too
-        av_log(avctx, AV_LOG_ERROR, "mpeg2 style quantization not supporetd by codec\n");
+        av_log(avctx, AV_LOG_ERROR, "mpeg2 style quantization not supported by codec\n");
         return -1;
     }
-        
+
     if((s->flags & CODEC_FLAG_CBP_RD) && !(s->flags & CODEC_FLAG_TRELLIS_QUANT)){
         av_log(avctx, AV_LOG_ERROR, "CBP RD needs trellis quant\n");
         return -1;
@@ -792,20 +1065,50 @@ int MPV_encode_init(AVCodecContext *avctx)
         av_log(avctx, AV_LOG_ERROR, "QP RD needs mbd=2\n");
         return -1;
     }
-    
+
     if(s->avctx->scenechange_threshold < 1000000000 && (s->flags & CODEC_FLAG_CLOSED_GOP)){
         av_log(avctx, AV_LOG_ERROR, "closed gop with scene change detection arent supported yet\n");
         return -1;
     }
 
-    i= ff_gcd(avctx->frame_rate, avctx->frame_rate_base);
+    if(s->avctx->thread_count > 1 && s->codec_id != CODEC_ID_MPEG4
+       && s->codec_id != CODEC_ID_MPEG1VIDEO && s->codec_id != CODEC_ID_MPEG2VIDEO
+       && (s->codec_id != CODEC_ID_H263P || !(s->flags & CODEC_FLAG_H263P_SLICE_STRUCT))){
+        av_log(avctx, AV_LOG_ERROR, "multi threaded encoding not supported by codec\n");
+        return -1;
+    }
+
+    if(s->avctx->thread_count > 1)
+        s->rtp_mode= 1;
+
+    if(!avctx->time_base.den || !avctx->time_base.num){
+        av_log(avctx, AV_LOG_ERROR, "framerate not set\n");
+        return -1;
+    }
+
+    i= (INT_MAX/2+128)>>8;
+    if(avctx->me_threshold >= i){
+        av_log(avctx, AV_LOG_ERROR, "me_threshold too large, max is %d\n", i - 1);
+        return -1;
+    }
+    if(avctx->mb_threshold >= i){
+        av_log(avctx, AV_LOG_ERROR, "mb_threshold too large, max is %d\n", i - 1);
+        return -1;
+    }
+
+    if(avctx->b_frame_strategy && (avctx->flags&CODEC_FLAG_PASS2)){
+        av_log(avctx, AV_LOG_ERROR, "b_frame_strategy must be 0 on the second pass\n");
+        return -1;
+    }
+
+    i= ff_gcd(avctx->time_base.den, avctx->time_base.num);
     if(i > 1){
         av_log(avctx, AV_LOG_INFO, "removing common factors from framerate\n");
-        avctx->frame_rate /= i;
-        avctx->frame_rate_base /= i;
+        avctx->time_base.den /= i;
+        avctx->time_base.num /= i;
 //        return -1;
     }
-    
+
     if(s->codec_id==CODEC_ID_MJPEG){
         s->intra_quant_bias= 1<<(QUANT_BIAS_SHIFT-1); //(a + x/2)/x
         s->inter_quant_bias= 0;
@@ -816,16 +1119,19 @@ int MPV_encode_init(AVCodecContext *avctx)
         s->intra_quant_bias=0;
         s->inter_quant_bias=-(1<<(QUANT_BIAS_SHIFT-2)); //(a - x/4)/x
     }
-    
+
     if(avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
         s->intra_quant_bias= avctx->intra_quant_bias;
     if(avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS)
         s->inter_quant_bias= avctx->inter_quant_bias;
-        
+
     avcodec_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift);
 
-    av_reduce(&s->time_increment_resolution, &dummy, s->avctx->frame_rate, s->avctx->frame_rate_base, (1<<16)-1);
-    s->time_increment_bits = av_log2(s->time_increment_resolution - 1) + 1;
+    if(avctx->codec_id == CODEC_ID_MPEG4 && s->avctx->time_base.den > (1<<16)-1){
+        av_log(avctx, AV_LOG_ERROR, "timebase not supported by mpeg 4 standard\n");
+        return -1;
+    }
+    s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1;
 
     switch(avctx->codec->id) {
     case CODEC_ID_MPEG1VIDEO:
@@ -840,47 +1146,52 @@ int MPV_encode_init(AVCodecContext *avctx)
         s->rtp_mode= 1;
         break;
     case CODEC_ID_LJPEG:
+    case CODEC_ID_JPEGLS:
     case CODEC_ID_MJPEG:
         s->out_format = FMT_MJPEG;
         s->intra_only = 1; /* force intra only for jpeg */
-        s->mjpeg_write_tables = 1; /* write all tables */
-       s->mjpeg_data_only_frames = 0; /* write all the needed headers */
+        s->mjpeg_write_tables = avctx->codec->id != CODEC_ID_JPEGLS;
+        s->mjpeg_data_only_frames = 0; /* write all the needed headers */
         s->mjpeg_vsample[0] = 1<<chroma_v_shift;
         s->mjpeg_vsample[1] = 1;
-        s->mjpeg_vsample[2] = 1; 
+        s->mjpeg_vsample[2] = 1;
         s->mjpeg_hsample[0] = 1<<chroma_h_shift;
-        s->mjpeg_hsample[1] = 1; 
-        s->mjpeg_hsample[2] = 1; 
+        s->mjpeg_hsample[1] = 1;
+        s->mjpeg_hsample[2] = 1;
         if (mjpeg_init(s) < 0)
             return -1;
         avctx->delay=0;
         s->low_delay=1;
         break;
-#ifdef CONFIG_RISKY
+    case CODEC_ID_H261:
+        s->out_format = FMT_H261;
+        avctx->delay=0;
+        s->low_delay=1;
+        break;
     case CODEC_ID_H263:
         if (h263_get_picture_format(s->width, s->height) == 7) {
-            av_log(avctx, AV_LOG_INFO, "Input picture size isn't suitable for h263 codec! try h263+\n");
+            av_log(avctx, AV_LOG_INFO, "The specified picture size of %dx%d is not valid for the H.263 codec.\nValid sizes are 128x96, 176x144, 352x288, 704x576, and 1408x1152. Try H.263+.\n", s->width, s->height);
             return -1;
         }
         s->out_format = FMT_H263;
-       s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
+        s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
         avctx->delay=0;
         s->low_delay=1;
         break;
     case CODEC_ID_H263P:
         s->out_format = FMT_H263;
         s->h263_plus = 1;
-       /* Fx */
+        /* Fx */
         s->umvplus = (avctx->flags & CODEC_FLAG_H263P_UMV) ? 1:0;
-       s->h263_aic= (avctx->flags & CODEC_FLAG_H263P_AIC) ? 1:0;
-       s->modified_quant= s->h263_aic;
-       s->alt_inter_vlc= (avctx->flags & CODEC_FLAG_H263P_AIV) ? 1:0;
-       s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
-       s->loop_filter= (avctx->flags & CODEC_FLAG_LOOP_FILTER) ? 1:0;
-       s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
+        s->h263_aic= (avctx->flags & CODEC_FLAG_H263P_AIC) ? 1:0;
+        s->modified_quant= s->h263_aic;
+        s->alt_inter_vlc= (avctx->flags & CODEC_FLAG_H263P_AIV) ? 1:0;
+        s->obmc= (avctx->flags & CODEC_FLAG_OBMC) ? 1:0;
+        s->loop_filter= (avctx->flags & CODEC_FLAG_LOOP_FILTER) ? 1:0;
+        s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
         s->h263_slice_structured= (s->flags & CODEC_FLAG_H263P_SLICE_STRUCT) ? 1:0;
 
-       /* /Fx */
+        /* /Fx */
         /* These are just to be sure */
         avctx->delay=0;
         s->low_delay=1;
@@ -898,6 +1209,16 @@ int MPV_encode_init(AVCodecContext *avctx)
         avctx->delay=0;
         s->low_delay=1;
         break;
+    case CODEC_ID_RV20:
+        s->out_format = FMT_H263;
+        avctx->delay=0;
+        s->low_delay=1;
+        s->modified_quant=1;
+        s->h263_aic=1;
+        s->h263_plus=1;
+        s->loop_filter=1;
+        s->unrestricted_mv= s->obmc || s->loop_filter || s->umvplus;
+        break;
     case CODEC_ID_MPEG4:
         s->out_format = FMT_H263;
         s->h263_pred = 1;
@@ -953,32 +1274,11 @@ int MPV_encode_init(AVCodecContext *avctx)
         avctx->delay=0;
         s->low_delay=1;
         break;
-#endif
     default:
         return -1;
     }
 
-    { /* set up some save defaults, some codecs might override them later */
-        static int done=0;
-        if(!done){
-            int i;
-            done=1;
-
-            default_mv_penalty= av_mallocz( sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1) );
-            memset(default_mv_penalty, 0, sizeof(uint8_t)*(MAX_FCODE+1)*(2*MAX_MV+1));
-            memset(default_fcode_tab , 0, sizeof(uint8_t)*(2*MAX_MV+1));
-
-            for(i=-16; i<16; i++){
-                default_fcode_tab[i + MAX_MV]= 1;
-            }
-        }
-    }
-    s->me.mv_penalty= default_mv_penalty;
-    s->fcode_tab= default_fcode_tab;
-    /* dont use mv_penalty table for crap MV as it would be confused */
-    //FIXME remove after fixing / removing old ME
-    if (s->me_method < ME_EPZS) s->me.mv_penalty = default_mv_penalty;
+    avctx->has_b_frames= !s->low_delay;
 
     s->encoding = 1;
 
@@ -988,36 +1288,34 @@ int MPV_encode_init(AVCodecContext *avctx)
 
     if(s->modified_quant)
         s->chroma_qscale_table= ff_h263_chroma_qscale_table;
-    s->progressive_frame= 
+    s->progressive_frame=
     s->progressive_sequence= !(avctx->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME));
-    
+    s->quant_precision=5;
+
     ff_set_cmp(&s->dsp, s->dsp.ildct_cmp, s->avctx->ildct_cmp);
-    
-    ff_init_me(s);
+    ff_set_cmp(&s->dsp, s->dsp.frame_skip_cmp, s->avctx->frame_skip_cmp);
 
-#ifdef CONFIG_ENCODERS
-#ifdef CONFIG_RISKY
+#ifdef CONFIG_H261_ENCODER
+    if (s->out_format == FMT_H261)
+        ff_h261_encode_init(s);
+#endif
     if (s->out_format == FMT_H263)
         h263_encode_init(s);
     if(s->msmpeg4_version)
         ff_msmpeg4_encode_init(s);
-#endif
     if (s->out_format == FMT_MPEG1)
         ff_mpeg1_encode_init(s);
-#endif
 
-    /* init default q matrix */
+    /* init q matrix */
     for(i=0;i<64;i++) {
         int j= s->dsp.idct_permutation[i];
-#ifdef CONFIG_RISKY
         if(s->codec_id==CODEC_ID_MPEG4 && s->mpeg_quant){
             s->intra_matrix[j] = ff_mpeg4_default_intra_matrix[i];
             s->inter_matrix[j] = ff_mpeg4_default_non_intra_matrix[i];
-        }else if(s->out_format == FMT_H263){
+        }else if(s->out_format == FMT_H263 || s->out_format == FMT_H261){
             s->intra_matrix[j] =
             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
         }else
-#endif
         { /* mpeg1/2 */
             s->intra_matrix[j] = ff_mpeg1_default_intra_matrix[i];
             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
@@ -1031,22 +1329,15 @@ int MPV_encode_init(AVCodecContext *avctx)
     /* precompute matrix */
     /* for mjpeg, we do include qscale in the matrix */
     if (s->out_format != FMT_MJPEG) {
-        convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16, 
-                       s->intra_matrix, s->intra_quant_bias, 1, 31);
-        convert_matrix(&s->dsp, s->q_inter_matrix, s->q_inter_matrix16, 
-                       s->inter_matrix, s->inter_quant_bias, 1, 31);
+        convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
+                       s->intra_matrix, s->intra_quant_bias, avctx->qmin, 31, 1);
+        convert_matrix(&s->dsp, s->q_inter_matrix, s->q_inter_matrix16,
+                       s->inter_matrix, s->inter_quant_bias, avctx->qmin, 31, 0);
     }
 
     if(ff_rate_control_init(s) < 0)
         return -1;
 
-    s->picture_number = 0;
-    s->input_picture_number = 0;
-    s->picture_in_gop_number = 0;
-    /* motion detector init */
-    s->f_code = 1;
-    s->b_code = 1;
-
     return 0;
 }
 
@@ -1065,18 +1356,22 @@ int MPV_encode_end(AVCodecContext *avctx)
         mjpeg_close(s);
 
     av_freep(&avctx->extradata);
-      
+
     return 0;
 }
 
 #endif //CONFIG_ENCODERS
 
-void init_rl(RLTable *rl)
+void init_rl(RLTable *rl, int use_static)
 {
     int8_t max_level[MAX_RUN+1], max_run[MAX_LEVEL+1];
     uint8_t index_run[MAX_RUN+1];
     int last, run, level, start, end, i;
 
+    /* If table is static, we can quit if rl->max_level[0] is not NULL */
+    if(use_static && rl->max_level[0])
+        return;
+
     /* compute max_level[], max_run[] and index_run[] */
     for(last=0;last<2;last++) {
         if (last == 0) {
@@ -1100,11 +1395,20 @@ void init_rl(RLTable *rl)
             if (run > max_run[level])
                 max_run[level] = run;
         }
-        rl->max_level[last] = av_malloc(MAX_RUN + 1);
+        if(use_static)
+            rl->max_level[last] = av_mallocz_static(MAX_RUN + 1);
+        else
+            rl->max_level[last] = av_malloc(MAX_RUN + 1);
         memcpy(rl->max_level[last], max_level, MAX_RUN + 1);
-        rl->max_run[last] = av_malloc(MAX_LEVEL + 1);
+        if(use_static)
+            rl->max_run[last] = av_mallocz_static(MAX_LEVEL + 1);
+        else
+            rl->max_run[last] = av_malloc(MAX_LEVEL + 1);
         memcpy(rl->max_run[last], max_run, MAX_LEVEL + 1);
-        rl->index_run[last] = av_malloc(MAX_RUN + 1);
+        if(use_static)
+            rl->index_run[last] = av_mallocz_static(MAX_RUN + 1);
+        else
+            rl->index_run[last] = av_malloc(MAX_RUN + 1);
         memcpy(rl->index_run[last], index_run, MAX_RUN + 1);
     }
 }
@@ -1140,7 +1444,7 @@ static void draw_edges_c(uint8_t *buf, int wrap, int width, int height, int w)
 
 int ff_find_unused_picture(MpegEncContext *s, int shared){
     int i;
-    
+
     if(shared){
         for(i=0; i<MAX_PICTURE_COUNT; i++){
             if(s->picture[i].data[0]==NULL && s->picture[i].type==0) return i;
@@ -1168,7 +1472,7 @@ static void update_noise_reduction(MpegEncContext *s){
             }
             s->dct_count[intra] >>= 1;
         }
-        
+
         for(i=0; i<64; i++){
             s->dct_offset[intra][i]= (s->avctx->noise_reduction * s->dct_count[intra] + s->dct_error_sum[intra][i]/2) / (s->dct_error_sum[intra][i]+1);
         }
@@ -1182,12 +1486,12 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
 {
     int i;
     AVFrame *pic;
-    s->mb_skiped = 0;
+    s->mb_skipped = 0;
 
     assert(s->last_picture_ptr==NULL || s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3);
 
     /* mark&release old frames */
-    if (s->pict_type != B_TYPE && s->last_picture_ptr && s->last_picture_ptr->data[0]) {
+    if (s->pict_type != B_TYPE && s->last_picture_ptr && s->last_picture_ptr != s->next_picture_ptr && s->last_picture_ptr->data[0]) {
         avctx->release_buffer(avctx, (AVFrame*)s->last_picture_ptr);
 
         /* release forgotten pictures */
@@ -1196,14 +1500,14 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
             for(i=0; i<MAX_PICTURE_COUNT; i++){
                 if(s->picture[i].data[0] && &s->picture[i] != s->next_picture_ptr && s->picture[i].reference){
                     av_log(avctx, AV_LOG_ERROR, "releasing zombie picture\n");
-                    avctx->release_buffer(avctx, (AVFrame*)&s->picture[i]);                
+                    avctx->release_buffer(avctx, (AVFrame*)&s->picture[i]);
                 }
             }
         }
     }
 alloc:
     if(!s->encoding){
-        /* release non refernce frames */
+        /* release non reference frames */
         for(i=0; i<MAX_PICTURE_COUNT; i++){
             if(s->picture[i].data[0] && !s->picture[i].reference /*&& s->picture[i].type!=FF_BUFFER_TYPE_SHARED*/){
                 s->avctx->release_buffer(s->avctx, (AVFrame*)&s->picture[i]);
@@ -1217,10 +1521,11 @@ alloc:
             pic= (AVFrame*)&s->picture[i];
         }
 
-        pic->reference= s->pict_type != B_TYPE ? 3 : 0;
+        pic->reference= (s->pict_type != B_TYPE || s->codec_id == CODEC_ID_H264)
+                        && !s->dropable ? 3 : 0;
 
         pic->coded_picture_number= s->coded_picture_number++;
-        
+
         if( alloc_picture(s, (Picture*)pic, 0) < 0)
             return -1;
 
@@ -1230,24 +1535,30 @@ alloc:
     }
 
     s->current_picture_ptr->pict_type= s->pict_type;
-//    if(s->flags && CODEC_FLAG_QSCALE) 
+//    if(s->flags && CODEC_FLAG_QSCALE)
   //      s->current_picture_ptr->quality= s->new_picture_ptr->quality;
     s->current_picture_ptr->key_frame= s->pict_type == I_TYPE;
 
     copy_picture(&s->current_picture, s->current_picture_ptr);
-  
+
   if(s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3){
     if (s->pict_type != B_TYPE) {
         s->last_picture_ptr= s->next_picture_ptr;
-        s->next_picture_ptr= s->current_picture_ptr;
+        if(!s->dropable)
+            s->next_picture_ptr= s->current_picture_ptr;
     }
-    
+/*    av_log(s->avctx, AV_LOG_DEBUG, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n", s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
+        s->last_picture_ptr    ? s->last_picture_ptr->data[0] : NULL,
+        s->next_picture_ptr    ? s->next_picture_ptr->data[0] : NULL,
+        s->current_picture_ptr ? s->current_picture_ptr->data[0] : NULL,
+        s->pict_type, s->dropable);*/
+
     if(s->last_picture_ptr) copy_picture(&s->last_picture, s->last_picture_ptr);
     if(s->next_picture_ptr) copy_picture(&s->next_picture, s->next_picture_ptr);
-    
+
     if(s->pict_type != I_TYPE && (s->last_picture_ptr==NULL || s->last_picture_ptr->data[0]==NULL)){
         av_log(avctx, AV_LOG_ERROR, "warning: first frame is no keyframe\n");
-        assert(s->pict_type != B_TYPE); //these should have been dropped if we dont have a reference
+        assert(s->pict_type != B_TYPE); //these should have been dropped if we don't have a reference
         goto alloc;
     }
 
@@ -1258,23 +1569,23 @@ alloc:
         for(i=0; i<4; i++){
             if(s->picture_structure == PICT_BOTTOM_FIELD){
                  s->current_picture.data[i] += s->current_picture.linesize[i];
-            } 
+            }
             s->current_picture.linesize[i] *= 2;
             s->last_picture.linesize[i] *=2;
             s->next_picture.linesize[i] *=2;
         }
     }
   }
-   
+
     s->hurry_up= s->avctx->hurry_up;
     s->error_resilience= avctx->error_resilience;
 
-    /* set dequantizer, we cant do it during init as it might change for mpeg4
-       and we cant do it in the header decode as init isnt called for mpeg4 there yet */
+    /* set dequantizer, we can't do it during init as it might change for mpeg4
+       and we can't do it in the header decode as init isnt called for mpeg4 there yet */
     if(s->mpeg_quant || s->codec_id == CODEC_ID_MPEG2VIDEO){
         s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
         s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
-    }else if(s->out_format == FMT_H263){
+    }else if(s->out_format == FMT_H263 || s->out_format == FMT_H261){
         s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
         s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
     }else{
@@ -1287,7 +1598,7 @@ alloc:
 
         update_noise_reduction(s);
     }
-        
+
 #ifdef HAVE_XVMC
     if(s->avctx->xvmc_acceleration)
         return XVMC_field_start(s, avctx);
@@ -1306,14 +1617,15 @@ void MPV_frame_end(MpegEncContext *s)
         XVMC_field_end(s);
     }else
 #endif
-    if(s->unrestricted_mv && s->pict_type != B_TYPE && !s->intra_only && !(s->flags&CODEC_FLAG_EMU_EDGE)) {
+    if(s->unrestricted_mv && s->current_picture.reference && !s->intra_only && !(s->flags&CODEC_FLAG_EMU_EDGE)) {
             draw_edges(s->current_picture.data[0], s->linesize  , s->h_edge_pos   , s->v_edge_pos   , EDGE_WIDTH  );
             draw_edges(s->current_picture.data[1], s->uvlinesize, s->h_edge_pos>>1, s->v_edge_pos>>1, EDGE_WIDTH/2);
             draw_edges(s->current_picture.data[2], s->uvlinesize, s->h_edge_pos>>1, s->v_edge_pos>>1, EDGE_WIDTH/2);
     }
     emms_c();
-    
+
     s->last_pict_type    = s->pict_type;
+    s->last_lambda_for[s->pict_type]= s->current_picture_ptr->quality;
     if(s->pict_type!=B_TYPE){
         s->last_non_b_pict_type= s->pict_type;
     }
@@ -1323,13 +1635,13 @@ void MPV_frame_end(MpegEncContext *s)
         if(s->picture[i].data[0] == s->current_picture.data[0]){
             s->picture[i]= s->current_picture;
             break;
-        }    
+        }
     }
     assert(i<MAX_PICTURE_COUNT);
-#endif    
+#endif
 
     if(s->encoding){
-        /* release non refernce frames */
+        /* release non-reference frames */
         for(i=0; i<MAX_PICTURE_COUNT; i++){
             if(s->picture[i].data[0] && !s->picture[i].reference /*&& s->picture[i].type!=FF_BUFFER_TYPE_SHARED*/){
                 s->avctx->release_buffer(s->avctx, (AVFrame*)&s->picture[i]);
@@ -1342,6 +1654,7 @@ void MPV_frame_end(MpegEncContext *s)
     memset(&s->next_picture, 0, sizeof(Picture));
     memset(&s->current_picture, 0, sizeof(Picture));
 #endif
+    s->avctx->coded_frame= (AVFrame*)s->current_picture_ptr;
 }
 
 /**
@@ -1352,15 +1665,15 @@ void MPV_frame_end(MpegEncContext *s)
  * @param color color of the arrow
  */
 static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color){
-    int t, x, y, f;
-    
+    int t, x, y, fr, f;
+
     sx= clip(sx, 0, w-1);
     sy= clip(sy, 0, h-1);
     ex= clip(ex, 0, w-1);
     ey= clip(ey, 0, h-1);
-    
+
     buf[sy*stride + sx]+= color;
-    
+
     if(ABS(ex - sx) > ABS(ey - sy)){
         if(sx > ex){
             t=sx; sx=ex; ex=t;
@@ -1370,8 +1683,10 @@ static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h
         ex-= sx;
         f= ((ey-sy)<<16)/ex;
         for(x= 0; x <= ex; x++){
-            y= ((x*f) + (1<<15))>>16;
-            buf[y*stride + x]+= color;
+            y = (x*f)>>16;
+            fr= (x*f)&0xFFFF;
+            buf[ y   *stride + x]+= (color*(0x10000-fr))>>16;
+            buf[(y+1)*stride + x]+= (color*         fr )>>16;
         }
     }else{
         if(sy > ey){
@@ -1383,8 +1698,10 @@ static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h
         if(ey) f= ((ex-sx)<<16)/ey;
         else   f= 0;
         for(y= 0; y <= ey; y++){
-            x= ((y*f) + (1<<15))>>16;
-            buf[y*stride + x]+= color;
+            x = (y*f)>>16;
+            fr= (y*f)&0xFFFF;
+            buf[y*stride + x  ]+= (color*(0x10000-fr))>>16;;
+            buf[y*stride + x+1]+= (color*         fr )>>16;;
         }
     }
 }
@@ -1396,26 +1713,26 @@ static void draw_line(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h
  * @param stride stride/linesize of the image
  * @param color color of the arrow
  */
-static void draw_arrow(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color){ 
+static void draw_arrow(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color){
     int dx,dy;
 
     sx= clip(sx, -100, w+100);
     sy= clip(sy, -100, h+100);
     ex= clip(ex, -100, w+100);
     ey= clip(ey, -100, h+100);
-    
+
     dx= ex - sx;
     dy= ey - sy;
-    
+
     if(dx*dx + dy*dy > 3*3){
         int rx=  dx + dy;
         int ry= -dx + dy;
         int length= ff_sqrt((rx*rx + ry*ry)<<8);
-        
+
         //FIXME subpixel accuracy
         rx= ROUNDED_DIV(rx*3<<4, length);
         ry= ROUNDED_DIV(ry*3<<4, length);
-        
+
         draw_line(buf, sx, sy, sx + rx, sy + ry, w, h, stride, color);
         draw_line(buf, sx, sy, sx - ry, sy + rx, w, h, stride, color);
     }
@@ -1431,7 +1748,7 @@ void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
 
     if(s->avctx->debug&(FF_DEBUG_SKIP | FF_DEBUG_QP | FF_DEBUG_MB_TYPE)){
         int x,y;
-        
+
         av_log(s->avctx,AV_LOG_DEBUG,"New frame, type: ");
         switch (pict->pict_type) {
             case FF_I_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"I\n"); break;
@@ -1439,7 +1756,7 @@ void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
             case FF_B_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"B\n"); break;
             case FF_S_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"S\n"); break;
             case FF_SI_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"SI\n"); break;
-            case FF_SP_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"SP\n"); break;            
+            case FF_SP_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"SP\n"); break;
         }
         for(y=0; y<s->mb_height; y++){
             for(x=0; x<s->mb_width; x++){
@@ -1480,20 +1797,20 @@ void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
                         assert(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1));
                         av_log(s->avctx, AV_LOG_DEBUG, "X");
                     }
-                    
+
                     //segmentation
                     if(IS_8X8(mb_type))
                         av_log(s->avctx, AV_LOG_DEBUG, "+");
                     else if(IS_16X8(mb_type))
                         av_log(s->avctx, AV_LOG_DEBUG, "-");
                     else if(IS_8X16(mb_type))
-                        av_log(s->avctx, AV_LOG_DEBUG, "¦");
+                        av_log(s->avctx, AV_LOG_DEBUG, "|");
                     else if(IS_INTRA(mb_type) || IS_16X16(mb_type))
                         av_log(s->avctx, AV_LOG_DEBUG, " ");
                     else
                         av_log(s->avctx, AV_LOG_DEBUG, "?");
-                    
-                        
+
+
                     if(IS_INTERLACED(mb_type) && s->codec_id == CODEC_ID_H264)
                         av_log(s->avctx, AV_LOG_DEBUG, "=");
                     else
@@ -1511,11 +1828,15 @@ void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
         uint8_t *ptr;
         int i;
         int h_chroma_shift, v_chroma_shift;
+        const int width = s->avctx->width;
+        const int height= s->avctx->height;
+        const int mv_sample_log2= 4 - pict->motion_subsample_log2;
+        const int mv_stride= (s->mb_width << mv_sample_log2) + 1;
         s->low_delay=0; //needed to see the vectors without trashing the buffers
 
         avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &h_chroma_shift, &v_chroma_shift);
         for(i=0; i<3; i++){
-            memcpy(s->visualization_buffer[i], pict->data[i], (i==0) ? pict->linesize[i]*s->height:pict->linesize[i]*s->height >> v_chroma_shift);
+            memcpy(s->visualization_buffer[i], pict->data[i], (i==0) ? pict->linesize[i]*height:pict->linesize[i]*height >> v_chroma_shift);
             pict->data[i]= s->visualization_buffer[i];
         }
         pict->type= FF_BUFFER_TYPE_COPY;
@@ -1528,7 +1849,7 @@ void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
                 if((s->avctx->debug_mv) && pict->motion_val){
                   int type;
                   for(type=0; type<3; type++){
-                    int direction;
+                    int direction = 0;
                     switch (type) {
                       case 0: if ((!(s->avctx->debug_mv&FF_DEBUG_VIS_MV_P_FOR)) || (pict->pict_type!=FF_P_TYPE))
                                 continue;
@@ -1551,30 +1872,48 @@ void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
                       for(i=0; i<4; i++){
                         int sx= mb_x*16 + 4 + 8*(i&1);
                         int sy= mb_y*16 + 4 + 8*(i>>1);
-                        int xy= 1 + mb_x*2 + (i&1) + (mb_y*2 + 1 + (i>>1))*(s->mb_width*2 + 2);
+                        int xy= (mb_x*2 + (i&1) + (mb_y*2 + (i>>1))*mv_stride) << (mv_sample_log2-1);
                         int mx= (pict->motion_val[direction][xy][0]>>shift) + sx;
                         int my= (pict->motion_val[direction][xy][1]>>shift) + sy;
-                        draw_arrow(ptr, sx, sy, mx, my, s->width, s->height, s->linesize, 100);
+                        draw_arrow(ptr, sx, sy, mx, my, width, height, s->linesize, 100);
                       }
                     }else if(IS_16X8(pict->mb_type[mb_index])){
                       int i;
                       for(i=0; i<2; i++){
                         int sx=mb_x*16 + 8;
                         int sy=mb_y*16 + 4 + 8*i;
-                        int xy=1 + mb_x*2 + (mb_y*2 + 1 + i)*(s->mb_width*2 + 2);
-                        int mx=(pict->motion_val[direction][xy][0]>>shift) + sx;
-                        int my=(pict->motion_val[direction][xy][1]>>shift) + sy;
-                        draw_arrow(ptr, sx, sy, mx, my, s->width, s->height, s->linesize, 100);
+                        int xy= (mb_x*2 + (mb_y*2 + i)*mv_stride) << (mv_sample_log2-1);
+                        int mx=(pict->motion_val[direction][xy][0]>>shift);
+                        int my=(pict->motion_val[direction][xy][1]>>shift);
+
+                        if(IS_INTERLACED(pict->mb_type[mb_index]))
+                            my*=2;
+
+                        draw_arrow(ptr, sx, sy, mx+sx, my+sy, width, height, s->linesize, 100);
+                      }
+                    }else if(IS_8X16(pict->mb_type[mb_index])){
+                      int i;
+                      for(i=0; i<2; i++){
+                        int sx=mb_x*16 + 4 + 8*i;
+                        int sy=mb_y*16 + 8;
+                        int xy= (mb_x*2 + i + mb_y*2*mv_stride) << (mv_sample_log2-1);
+                        int mx=(pict->motion_val[direction][xy][0]>>shift);
+                        int my=(pict->motion_val[direction][xy][1]>>shift);
+
+                        if(IS_INTERLACED(pict->mb_type[mb_index]))
+                            my*=2;
+
+                        draw_arrow(ptr, sx, sy, mx+sx, my+sy, width, height, s->linesize, 100);
                       }
                     }else{
                       int sx= mb_x*16 + 8;
                       int sy= mb_y*16 + 8;
-                      int xy= 1 + mb_x*2 + (mb_y*2 + 1)*(s->mb_width*2 + 2);
+                      int xy= (mb_x + mb_y*mv_stride) << mv_sample_log2;
                       int mx= (pict->motion_val[direction][xy][0]>>shift) + sx;
                       int my= (pict->motion_val[direction][xy][1]>>shift) + sy;
-                      draw_arrow(ptr, sx, sy, mx, my, s->width, s->height, s->linesize, 100);
+                      draw_arrow(ptr, sx, sy, mx, my, width, height, s->linesize, 100);
                     }
-                  }                  
+                  }
                 }
                 if((s->avctx->debug&FF_DEBUG_VIS_QP) && pict->motion_val){
                     uint64_t c= (pict->qscale_table[mb_index]*128/31) * 0x0101010101010101ULL;
@@ -1592,7 +1931,7 @@ void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){
 u= (int)(128 + r*cos(theta*3.141592/180));\
 v= (int)(128 + r*sin(theta*3.141592/180));
 
-                    
+
                     u=v=128;
                     if(IS_PCM(mb_type)){
                         COLOR(120,48)
@@ -1635,7 +1974,22 @@ v= (int)(128 + r*sin(theta*3.141592/180));
                         for(y=0; y<16; y++)
                             pict->data[0][16*mb_x + 8 + (16*mb_y + y)*pict->linesize[0]]^= 0x80;
                     }
-                        
+                    if(IS_8X8(mb_type) && mv_sample_log2 >= 2){
+                        int dm= 1 << (mv_sample_log2-2);
+                        for(i=0; i<4; i++){
+                            int sx= mb_x*16 + 8*(i&1);
+                            int sy= mb_y*16 + 8*(i>>1);
+                            int xy= (mb_x*2 + (i&1) + (mb_y*2 + (i>>1))*mv_stride) << (mv_sample_log2-1);
+                            //FIXME bidir
+                            int32_t *mv = (int32_t*)&pict->motion_val[0][xy];
+                            if(mv[0] != mv[dm] || mv[dm*mv_stride] != mv[dm*(mv_stride+1)])
+                                for(y=0; y<8; y++)
+                                    pict->data[0][sx + 4 + (sy + y)*pict->linesize[0]]^= 0x80;
+                            if(mv[0] != mv[dm*mv_stride] || mv[dm] != mv[dm*(mv_stride+1)])
+                                *(uint64_t*)(pict->data[0] + sx + (sy + 4)*pict->linesize[0])^= 0x8080808080808080ULL;
+                        }
+                    }
+
                     if(IS_INTERLACED(mb_type) && s->codec_id == CODEC_ID_H264){
                         // hmm
                     }
@@ -1651,30 +2005,30 @@ v= (int)(128 + r*sin(theta*3.141592/180));
 static int get_sae(uint8_t *src, int ref, int stride){
     int x,y;
     int acc=0;
-    
+
     for(y=0; y<16; y++){
         for(x=0; x<16; x++){
             acc+= ABS(src[x+y*stride] - ref);
         }
     }
-    
+
     return acc;
 }
 
 static int get_intra_count(MpegEncContext *s, uint8_t *src, uint8_t *ref, int stride){
     int x, y, w, h;
     int acc=0;
-    
+
     w= s->width &~15;
     h= s->height&~15;
-    
+
     for(y=0; y<h; y+=16){
         for(x=0; x<w; x+=16){
             int offset= x + y*stride;
             int sad = s->dsp.sad[0](NULL, src + offset, ref + offset, stride, 16);
             int mean= (s->dsp.pix_sum(src + offset, stride) + 128)>>8;
             int sae = get_sae(src + offset, mean, stride);
-            
+
             acc+= sae + 500 < sad;
         }
     }
@@ -1684,31 +2038,57 @@ static int get_intra_count(MpegEncContext *s, uint8_t *src, uint8_t *ref, int st
 
 static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
     AVFrame *pic=NULL;
+    int64_t pts;
     int i;
     const int encoding_delay= s->max_b_frames;
     int direct=1;
-    
+
+    if(pic_arg){
+        pts= pic_arg->pts;
+        pic_arg->display_picture_number= s->input_picture_number++;
+
+        if(pts != AV_NOPTS_VALUE){
+            if(s->user_specified_pts != AV_NOPTS_VALUE){
+                int64_t time= pts;
+                int64_t last= s->user_specified_pts;
+
+                if(time <= last){
+                    av_log(s->avctx, AV_LOG_ERROR, "Error, Invalid timestamp=%"PRId64", last=%"PRId64"\n", pts, s->user_specified_pts);
+                    return -1;
+                }
+            }
+            s->user_specified_pts= pts;
+        }else{
+            if(s->user_specified_pts != AV_NOPTS_VALUE){
+                s->user_specified_pts=
+                pts= s->user_specified_pts + 1;
+                av_log(s->avctx, AV_LOG_INFO, "Warning: AVFrame.pts=? trying to guess (%"PRId64")\n", pts);
+            }else{
+                pts= pic_arg->display_picture_number;
+            }
+        }
+    }
+
   if(pic_arg){
     if(encoding_delay && !(s->flags&CODEC_FLAG_INPUT_PRESERVED)) direct=0;
     if(pic_arg->linesize[0] != s->linesize) direct=0;
     if(pic_arg->linesize[1] != s->uvlinesize) direct=0;
     if(pic_arg->linesize[2] != s->uvlinesize) direct=0;
-  
+
 //    av_log(AV_LOG_DEBUG, "%d %d %d %d\n",pic_arg->linesize[0], pic_arg->linesize[1], s->linesize, s->uvlinesize);
-    
+
     if(direct){
         i= ff_find_unused_picture(s, 1);
 
         pic= (AVFrame*)&s->picture[i];
         pic->reference= 3;
-    
+
         for(i=0; i<4; i++){
             pic->data[i]= pic_arg->data[i];
             pic->linesize[i]= pic_arg->linesize[i];
         }
         alloc_picture(s, (Picture*)pic, 1);
     }else{
-        int offset= 16;
         i= ff_find_unused_picture(s, 0);
 
         pic= (AVFrame*)&s->picture[i];
@@ -1716,14 +2096,14 @@ static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
 
         alloc_picture(s, (Picture*)pic, 0);
 
-        if(   pic->data[0] + offset == pic_arg->data[0] 
-           && pic->data[1] + offset == pic_arg->data[1]
-           && pic->data[2] + offset == pic_arg->data[2]){
+        if(   pic->data[0] + INPLACE_OFFSET == pic_arg->data[0]
+           && pic->data[1] + INPLACE_OFFSET == pic_arg->data[1]
+           && pic->data[2] + INPLACE_OFFSET == pic_arg->data[2]){
        // empty
         }else{
             int h_chroma_shift, v_chroma_shift;
             avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &h_chroma_shift, &v_chroma_shift);
-        
+
             for(i=0; i<3; i++){
                 int src_stride= pic_arg->linesize[i];
                 int dst_stride= i ? s->uvlinesize : s->linesize;
@@ -1732,8 +2112,8 @@ static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
                 int w= s->width >>h_shift;
                 int h= s->height>>v_shift;
                 uint8_t *src= pic_arg->data[i];
-                uint8_t *dst= pic->data[i] + offset;
-            
+                uint8_t *dst= pic->data[i] + INPLACE_OFFSET;
+
                 if(src_stride==dst_stride)
                     memcpy(dst, src, src_stride*h);
                 else{
@@ -1746,20 +2126,161 @@ static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
             }
         }
     }
-    copy_picture_attributes(pic, pic_arg);
-    
-    pic->display_picture_number= s->input_picture_number++;
+    copy_picture_attributes(s, pic, pic_arg);
+    pic->pts= pts; //we set this here to avoid modifiying pic_arg
   }
 
     /* shift buffer entries */
     for(i=1; i<MAX_PICTURE_COUNT /*s->encoding_delay+1*/; i++)
         s->input_picture[i-1]= s->input_picture[i];
-        
+
     s->input_picture[encoding_delay]= (Picture*)pic;
 
     return 0;
 }
 
+static int skip_check(MpegEncContext *s, Picture *p, Picture *ref){
+    int x, y, plane;
+    int score=0;
+    int64_t score64=0;
+
+    for(plane=0; plane<3; plane++){
+        const int stride= p->linesize[plane];
+        const int bw= plane ? 1 : 2;
+        for(y=0; y<s->mb_height*bw; y++){
+            for(x=0; x<s->mb_width*bw; x++){
+                int off= p->type == FF_BUFFER_TYPE_SHARED ? 0: 16;
+                int v= s->dsp.frame_skip_cmp[1](s, p->data[plane] + 8*(x + y*stride)+off, ref->data[plane] + 8*(x + y*stride), stride, 8);
+
+                switch(s->avctx->frame_skip_exp){
+                    case 0: score= FFMAX(score, v); break;
+                    case 1: score+= ABS(v);break;
+                    case 2: score+= v*v;break;
+                    case 3: score64+= ABS(v*v*(int64_t)v);break;
+                    case 4: score64+= v*v*(int64_t)(v*v);break;
+                }
+            }
+        }
+    }
+
+    if(score) score64= score;
+
+    if(score64 < s->avctx->frame_skip_threshold)
+        return 1;
+    if(score64 < ((s->avctx->frame_skip_factor * (int64_t)s->lambda)>>8))
+        return 1;
+    return 0;
+}
+
+static int estimate_best_b_count(MpegEncContext *s){
+    AVCodec *codec= avcodec_find_encoder(s->avctx->codec_id);
+    AVCodecContext *c= avcodec_alloc_context();
+    AVFrame input[FF_MAX_B_FRAMES+2];
+    const int scale= s->avctx->brd_scale;
+    int i, j, out_size, p_lambda, b_lambda, lambda2;
+    int outbuf_size= s->width * s->height; //FIXME
+    uint8_t *outbuf= av_malloc(outbuf_size);
+    ImgReSampleContext *resample;
+    int64_t best_rd= INT64_MAX;
+    int best_b_count= -1;
+
+//    emms_c();
+    p_lambda= s->last_lambda_for[P_TYPE]; //s->next_picture_ptr->quality;
+    b_lambda= s->last_lambda_for[B_TYPE]; //p_lambda *ABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset;
+    if(!b_lambda) b_lambda= p_lambda; //FIXME we should do this somewhere else
+    lambda2= (b_lambda*b_lambda + (1<<FF_LAMBDA_SHIFT)/2 ) >> FF_LAMBDA_SHIFT;
+
+    c->width = s->width >> scale;
+    c->height= s->height>> scale;
+    c->flags= CODEC_FLAG_QSCALE | CODEC_FLAG_PSNR | CODEC_FLAG_INPUT_PRESERVED /*| CODEC_FLAG_EMU_EDGE*/;
+    c->flags|= s->avctx->flags & CODEC_FLAG_QPEL;
+    c->mb_decision= s->avctx->mb_decision;
+    c->me_cmp= s->avctx->me_cmp;
+    c->mb_cmp= s->avctx->mb_cmp;
+    c->me_sub_cmp= s->avctx->me_sub_cmp;
+    c->pix_fmt = PIX_FMT_YUV420P;
+    c->time_base= s->avctx->time_base;
+    c->max_b_frames= s->max_b_frames;
+
+    if (avcodec_open(c, codec) < 0)
+        return -1;
+
+    resample= img_resample_init(c->width, c->height, s->width, s->height); //FIXME use sws
+
+    for(i=0; i<s->max_b_frames+2; i++){
+        int ysize= c->width*c->height;
+        int csize= (c->width/2)*(c->height/2);
+        Picture pre_input, *pre_input_ptr= i ? s->input_picture[i-1] : s->next_picture_ptr;
+
+        if(pre_input_ptr)
+            pre_input= *pre_input_ptr;
+
+        if(pre_input.type != FF_BUFFER_TYPE_SHARED && i){
+            pre_input.data[0]+=INPLACE_OFFSET;
+            pre_input.data[1]+=INPLACE_OFFSET;
+            pre_input.data[2]+=INPLACE_OFFSET;
+        }
+
+        avcodec_get_frame_defaults(&input[i]);
+        input[i].data[0]= av_malloc(ysize + 2*csize);
+        input[i].data[1]= input[i].data[0] + ysize;
+        input[i].data[2]= input[i].data[1] + csize;
+        input[i].linesize[0]= c->width;
+        input[i].linesize[1]=
+        input[i].linesize[2]= c->width/2;
+
+        if(!i || s->input_picture[i-1])
+            img_resample(resample, &input[i], &pre_input);
+    }
+
+    for(j=0; j<s->max_b_frames+1; j++){
+        int64_t rd=0;
+
+        if(!s->input_picture[j])
+            break;
+
+        c->error[0]= c->error[1]= c->error[2]= 0;
+
+        input[0].pict_type= I_TYPE;
+        input[0].quality= 1 * FF_QP2LAMBDA;
+        out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[0]);
+//        rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT;
+
+        for(i=0; i<s->max_b_frames+1; i++){
+            int is_p= i % (j+1) == j || i==s->max_b_frames;
+
+            input[i+1].pict_type= is_p ? P_TYPE : B_TYPE;
+            input[i+1].quality= is_p ? p_lambda : b_lambda;
+            out_size = avcodec_encode_video(c, outbuf, outbuf_size, &input[i+1]);
+            rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
+        }
+
+        /* get the delayed frames */
+        while(out_size){
+            out_size = avcodec_encode_video(c, outbuf, outbuf_size, NULL);
+            rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
+        }
+
+        rd += c->error[0] + c->error[1] + c->error[2];
+
+        if(rd < best_rd){
+            best_rd= rd;
+            best_b_count= j;
+        }
+    }
+
+    av_freep(&outbuf);
+    avcodec_close(c);
+    av_freep(&c);
+    img_resample_close(resample);
+
+    for(i=0; i<s->max_b_frames+2; i++){
+        av_freep(&input[i].data[0]);
+    }
+
+    return best_b_count;
+}
+
 static void select_input_picture(MpegEncContext *s){
     int i;
 
@@ -1767,7 +2288,7 @@ static void select_input_picture(MpegEncContext *s){
         s->reordered_input_picture[i-1]= s->reordered_input_picture[i];
     s->reordered_input_picture[MAX_PICTURE_COUNT-1]= NULL;
 
-    /* set next picture types & ordering */
+    /* set next picture type & ordering */
     if(s->reordered_input_picture[0]==NULL && s->input_picture[0]){
         if(/*s->picture_in_gop_number >= s->gop_size ||*/ s->next_picture_ptr==NULL || s->intra_only){
             s->reordered_input_picture[0]= s->input_picture[0];
@@ -1775,48 +2296,69 @@ static void select_input_picture(MpegEncContext *s){
             s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
         }else{
             int b_frames;
-            
+
+            if(s->avctx->frame_skip_threshold || s->avctx->frame_skip_factor){
+                if(s->picture_in_gop_number < s->gop_size && skip_check(s, s->input_picture[0], s->next_picture_ptr)){
+                //FIXME check that te gop check above is +-1 correct
+//av_log(NULL, AV_LOG_DEBUG, "skip %p %Ld\n", s->input_picture[0]->data[0], s->input_picture[0]->pts);
+
+                    if(s->input_picture[0]->type == FF_BUFFER_TYPE_SHARED){
+                        for(i=0; i<4; i++)
+                            s->input_picture[0]->data[i]= NULL;
+                        s->input_picture[0]->type= 0;
+                    }else{
+                        assert(   s->input_picture[0]->type==FF_BUFFER_TYPE_USER
+                               || s->input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
+
+                        s->avctx->release_buffer(s->avctx, (AVFrame*)s->input_picture[0]);
+                    }
+
+                    emms_c();
+                    ff_vbv_update(s, 0);
+
+                    goto no_output_pic;
+                }
+            }
+
             if(s->flags&CODEC_FLAG_PASS2){
                 for(i=0; i<s->max_b_frames+1; i++){
                     int pict_num= s->input_picture[0]->display_picture_number + i;
-                    int pict_type= s->rc_context.entry[pict_num].new_pict_type;
-                    s->input_picture[i]->pict_type= pict_type;
-                    
-                    if(i + 1 >= s->rc_context.num_entries) break;
+
+                    if(pict_num >= s->rc_context.num_entries)
+                        break;
+                    if(!s->input_picture[i]){
+                        s->rc_context.entry[pict_num-1].new_pict_type = P_TYPE;
+                        break;
+                    }
+
+                    s->input_picture[i]->pict_type=
+                        s->rc_context.entry[pict_num].new_pict_type;
                 }
             }
 
-            if(s->input_picture[0]->pict_type){
-                /* user selected pict_type */
-                for(b_frames=0; b_frames<s->max_b_frames+1; b_frames++){
-                    if(s->input_picture[b_frames]->pict_type!=B_TYPE) break;
-                }
-            
-                if(b_frames > s->max_b_frames){
-                    av_log(s->avctx, AV_LOG_ERROR, "warning, too many bframes in a row\n");
-                    b_frames = s->max_b_frames;
-                }
-            }else if(s->avctx->b_frame_strategy==0){
+            if(s->avctx->b_frame_strategy==0){
                 b_frames= s->max_b_frames;
                 while(b_frames && !s->input_picture[b_frames]) b_frames--;
             }else if(s->avctx->b_frame_strategy==1){
                 for(i=1; i<s->max_b_frames+1; i++){
                     if(s->input_picture[i] && s->input_picture[i]->b_frame_score==0){
-                        s->input_picture[i]->b_frame_score= 
-                            get_intra_count(s, s->input_picture[i  ]->data[0], 
+                        s->input_picture[i]->b_frame_score=
+                            get_intra_count(s, s->input_picture[i  ]->data[0],
                                                s->input_picture[i-1]->data[0], s->linesize) + 1;
                     }
                 }
-                for(i=0; i<s->max_b_frames; i++){
+                for(i=0; i<s->max_b_frames+1; i++){
                     if(s->input_picture[i]==NULL || s->input_picture[i]->b_frame_score - 1 > s->mb_num/40) break;
                 }
-                                
+
                 b_frames= FFMAX(0, i-1);
-                
+
                 /* reset scores */
                 for(i=0; i<b_frames+1; i++){
                     s->input_picture[i]->b_frame_score=0;
                 }
+            }else if(s->avctx->b_frame_strategy==2){
+                b_frames= estimate_best_b_count(s);
             }else{
                 av_log(s->avctx, AV_LOG_ERROR, "illegal b frame strategy\n");
                 b_frames=0;
@@ -1826,12 +2368,26 @@ static void select_input_picture(MpegEncContext *s){
 //static int b_count=0;
 //b_count+= b_frames;
 //av_log(s->avctx, AV_LOG_DEBUG, "b_frames: %d\n", b_count);
+
+            for(i= b_frames - 1; i>=0; i--){
+                int type= s->input_picture[i]->pict_type;
+                if(type && type != B_TYPE)
+                    b_frames= i;
+            }
+            if(s->input_picture[b_frames]->pict_type == B_TYPE && b_frames == s->max_b_frames){
+                av_log(s->avctx, AV_LOG_ERROR, "warning, too many b frames in a row\n");
+            }
+
             if(s->picture_in_gop_number + b_frames >= s->gop_size){
+              if((s->flags2 & CODEC_FLAG2_STRICT_GOP) && s->gop_size > s->picture_in_gop_number){
+                    b_frames= s->gop_size - s->picture_in_gop_number - 1;
+              }else{
                 if(s->flags & CODEC_FLAG_CLOSED_GOP)
                     b_frames=0;
                 s->input_picture[b_frames]->pict_type= I_TYPE;
+              }
             }
-            
+
             if(   (s->flags & CODEC_FLAG_CLOSED_GOP)
                && b_frames
                && s->input_picture[b_frames]->pict_type== I_TYPE)
@@ -1848,15 +2404,15 @@ static void select_input_picture(MpegEncContext *s){
             }
         }
     }
-    
+no_output_pic:
     if(s->reordered_input_picture[0]){
         s->reordered_input_picture[0]->reference= s->reordered_input_picture[0]->pict_type!=B_TYPE ? 3 : 0;
 
         copy_picture(&s->new_picture, s->reordered_input_picture[0]);
 
         if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_SHARED){
-            // input is a shared pix, so we cant modifiy it -> alloc a new one & ensure that the shared one is reuseable
-        
+            // input is a shared pix, so we can't modifiy it -> alloc a new one & ensure that the shared one is reuseable
+
             int i= ff_find_unused_picture(s, 0);
             Picture *pic= &s->picture[i];
 
@@ -1864,26 +2420,27 @@ static void select_input_picture(MpegEncContext *s){
             for(i=0; i<4; i++)
                 s->reordered_input_picture[0]->data[i]= NULL;
             s->reordered_input_picture[0]->type= 0;
-            
-            copy_picture_attributes((AVFrame*)pic, (AVFrame*)s->reordered_input_picture[0]);
+
             pic->reference              = s->reordered_input_picture[0]->reference;
-            
+
             alloc_picture(s, pic, 0);
 
+            copy_picture_attributes(s, (AVFrame*)pic, (AVFrame*)s->reordered_input_picture[0]);
+
             s->current_picture_ptr= pic;
         }else{
             // input is not a shared pix -> reuse buffer for current_pix
 
-            assert(   s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_USER 
+            assert(   s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_USER
                    || s->reordered_input_picture[0]->type==FF_BUFFER_TYPE_INTERNAL);
-            
+
             s->current_picture_ptr= s->reordered_input_picture[0];
             for(i=0; i<4; i++){
-                s->new_picture.data[i]+=16;
+                s->new_picture.data[i]+= INPLACE_OFFSET;
             }
         }
         copy_picture(&s->current_picture, s->current_picture_ptr);
-    
+
         s->picture_number= s->new_picture.display_picture_number;
 //printf("dpn:%d\n", s->picture_number);
     }else{
@@ -1898,19 +2455,28 @@ int MPV_encode_picture(AVCodecContext *avctx,
     AVFrame *pic_arg = data;
     int i, stuffing_count;
 
-    if(avctx->pix_fmt != PIX_FMT_YUV420P){
+    if(avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUVJ420P){
         av_log(avctx, AV_LOG_ERROR, "this codec supports only YUV420P\n");
         return -1;
     }
-    
-    init_put_bits(&s->pb, buf, buf_size);
+
+    for(i=0; i<avctx->thread_count; i++){
+        int start_y= s->thread_context[i]->start_mb_y;
+        int   end_y= s->thread_context[i]->  end_mb_y;
+        int h= s->mb_height;
+        uint8_t *start= buf + (size_t)(((int64_t) buf_size)*start_y/h);
+        uint8_t *end  = buf + (size_t)(((int64_t) buf_size)*  end_y/h);
+
+        init_put_bits(&s->thread_context[i]->pb, start, end - start);
+    }
 
     s->picture_in_gop_number++;
 
-    load_input_picture(s, pic_arg);
-    
+    if(load_input_picture(s, pic_arg) < 0)
+        return -1;
+
     select_input_picture(s);
-    
+
     /* output? */
     if(s->new_picture.data[0]){
         s->pict_type= s->new_picture.pict_type;
@@ -1919,7 +2485,7 @@ int MPV_encode_picture(AVCodecContext *avctx,
         MPV_frame_start(s, avctx);
 
         encode_picture(s, s->picture_number);
-        
+
         avctx->real_pict_num  = s->picture_number;
         avctx->header_bits = s->header_bits;
         avctx->mv_bits     = s->mv_bits;
@@ -1934,19 +2500,27 @@ int MPV_encode_picture(AVCodecContext *avctx,
 
         if (s->out_format == FMT_MJPEG)
             mjpeg_picture_trailer(s);
-        
+
         if(s->flags&CODEC_FLAG_PASS1)
             ff_write_pass1_stats(s);
 
         for(i=0; i<4; i++){
+            s->current_picture_ptr->error[i]= s->current_picture.error[i];
             avctx->error[i] += s->current_picture_ptr->error[i];
         }
 
+        if(s->flags&CODEC_FLAG_PASS1)
+            assert(avctx->header_bits + avctx->mv_bits + avctx->misc_bits + avctx->i_tex_bits + avctx->p_tex_bits == put_bits_count(&s->pb));
         flush_put_bits(&s->pb);
-        s->frame_bits  = (pbBufPtr(&s->pb) - s->pb.buf) * 8;
+        s->frame_bits  = put_bits_count(&s->pb);
 
         stuffing_count= ff_vbv_update(s, s->frame_bits);
         if(stuffing_count){
+            if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < stuffing_count + 50){
+                av_log(s->avctx, AV_LOG_ERROR, "stuffing too large\n");
+                return -1;
+            }
+
             switch(s->codec_id){
             case CODEC_ID_MPEG1VIDEO:
             case CODEC_ID_MPEG2VIDEO:
@@ -1966,15 +2540,16 @@ int MPV_encode_picture(AVCodecContext *avctx,
                 av_log(s->avctx, AV_LOG_ERROR, "vbv buffer overflow\n");
             }
             flush_put_bits(&s->pb);
-            s->frame_bits  = (pbBufPtr(&s->pb) - s->pb.buf) * 8;
+            s->frame_bits  = put_bits_count(&s->pb);
         }
 
-        /* update mpeg1/2 vbv_delay for CBR */    
-        if(s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate){
+        /* update mpeg1/2 vbv_delay for CBR */
+        if(s->avctx->rc_max_rate && s->avctx->rc_min_rate == s->avctx->rc_max_rate && s->out_format == FMT_MPEG1
+           && 90000LL * (avctx->rc_buffer_size-1) <= s->avctx->rc_max_rate*0xFFFFLL){
             int vbv_delay;
 
             assert(s->repeat_first_field==0);
-            
+
             vbv_delay= lrintf(90000 * s->rc_context.buffer_index / s->avctx->rc_max_rate);
             assert(vbv_delay < 0xFFFF);
 
@@ -1991,7 +2566,7 @@ int MPV_encode_picture(AVCodecContext *avctx,
         s->frame_bits=0;
     }
     assert((s->frame_bits&7)==0);
-    
+
     return s->frame_bits/8;
 }
 
@@ -1999,8 +2574,7 @@ int MPV_encode_picture(AVCodecContext *avctx,
 
 static inline void gmc1_motion(MpegEncContext *s,
                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                               int dest_offset,
-                               uint8_t **ref_picture, int src_offset)
+                               uint8_t **ref_picture)
 {
     uint8_t *ptr;
     int offset, src_x, src_y, linesize, uvlinesize;
@@ -2022,10 +2596,9 @@ static inline void gmc1_motion(MpegEncContext *s,
 
     linesize = s->linesize;
     uvlinesize = s->uvlinesize;
-    
-    ptr = ref_picture[0] + (src_y * linesize) + src_x + src_offset;
 
-    dest_y+=dest_offset;
+    ptr = ref_picture[0] + (src_y * linesize) + src_x;
+
     if(s->flags&CODEC_FLAG_EMU_EDGE){
         if(   (unsigned)src_x >= s->h_edge_pos - 17
            || (unsigned)src_y >= s->v_edge_pos - 17){
@@ -2033,21 +2606,21 @@ static inline void gmc1_motion(MpegEncContext *s,
             ptr= s->edge_emu_buffer;
         }
     }
-    
+
     if((motion_x|motion_y)&7){
         s->dsp.gmc1(dest_y  , ptr  , linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
         s->dsp.gmc1(dest_y+8, ptr+8, linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
     }else{
         int dxy;
-        
+
         dxy= ((motion_x>>3)&1) | ((motion_y>>2)&2);
         if (s->no_rounding){
-           s->dsp.put_no_rnd_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
+            s->dsp.put_no_rnd_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
         }else{
             s->dsp.put_pixels_tab       [0][dxy](dest_y, ptr, linesize, 16);
         }
     }
-    
+
     if(s->flags&CODEC_FLAG_GRAY) return;
 
     motion_x= s->sprite_offset[1][0];
@@ -2063,7 +2636,7 @@ static inline void gmc1_motion(MpegEncContext *s,
     if (src_y == s->height>>1)
         motion_y =0;
 
-    offset = (src_y * uvlinesize) + src_x + (src_offset>>1);
+    offset = (src_y * uvlinesize) + src_x;
     ptr = ref_picture[1] + offset;
     if(s->flags&CODEC_FLAG_EMU_EDGE){
         if(   (unsigned)src_x >= (s->h_edge_pos>>1) - 9
@@ -2073,22 +2646,21 @@ static inline void gmc1_motion(MpegEncContext *s,
             emu=1;
         }
     }
-    s->dsp.gmc1(dest_cb + (dest_offset>>1), ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
-    
+    s->dsp.gmc1(dest_cb, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
+
     ptr = ref_picture[2] + offset;
     if(emu){
         ff_emulated_edge_mc(s->edge_emu_buffer, ptr, uvlinesize, 9, 9, src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
         ptr= s->edge_emu_buffer;
     }
-    s->dsp.gmc1(dest_cr + (dest_offset>>1), ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
-    
+    s->dsp.gmc1(dest_cr, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
+
     return;
 }
 
 static inline void gmc_motion(MpegEncContext *s,
                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                               int dest_offset,
-                               uint8_t **ref_picture, int src_offset)
+                               uint8_t **ref_picture)
 {
     uint8_t *ptr;
     int linesize, uvlinesize;
@@ -2098,52 +2670,46 @@ static inline void gmc_motion(MpegEncContext *s,
     linesize = s->linesize;
     uvlinesize = s->uvlinesize;
 
-    ptr = ref_picture[0] + src_offset;
+    ptr = ref_picture[0];
 
-    dest_y+=dest_offset;
-    
     ox= s->sprite_offset[0][0] + s->sprite_delta[0][0]*s->mb_x*16 + s->sprite_delta[0][1]*s->mb_y*16;
     oy= s->sprite_offset[0][1] + s->sprite_delta[1][0]*s->mb_x*16 + s->sprite_delta[1][1]*s->mb_y*16;
 
     s->dsp.gmc(dest_y, ptr, linesize, 16,
-           ox, 
-           oy, 
+           ox,
+           oy,
            s->sprite_delta[0][0], s->sprite_delta[0][1],
-           s->sprite_delta[1][0], s->sprite_delta[1][1], 
+           s->sprite_delta[1][0], s->sprite_delta[1][1],
            a+1, (1<<(2*a+1)) - s->no_rounding,
            s->h_edge_pos, s->v_edge_pos);
     s->dsp.gmc(dest_y+8, ptr, linesize, 16,
-           ox + s->sprite_delta[0][0]*8, 
-           oy + s->sprite_delta[1][0]*8, 
+           ox + s->sprite_delta[0][0]*8,
+           oy + s->sprite_delta[1][0]*8,
            s->sprite_delta[0][0], s->sprite_delta[0][1],
-           s->sprite_delta[1][0], s->sprite_delta[1][1], 
+           s->sprite_delta[1][0], s->sprite_delta[1][1],
            a+1, (1<<(2*a+1)) - s->no_rounding,
            s->h_edge_pos, s->v_edge_pos);
 
     if(s->flags&CODEC_FLAG_GRAY) return;
 
-
-    dest_cb+=dest_offset>>1;
-    dest_cr+=dest_offset>>1;
-    
     ox= s->sprite_offset[1][0] + s->sprite_delta[0][0]*s->mb_x*8 + s->sprite_delta[0][1]*s->mb_y*8;
     oy= s->sprite_offset[1][1] + s->sprite_delta[1][0]*s->mb_x*8 + s->sprite_delta[1][1]*s->mb_y*8;
 
-    ptr = ref_picture[1] + (src_offset>>1);
+    ptr = ref_picture[1];
     s->dsp.gmc(dest_cb, ptr, uvlinesize, 8,
-           ox, 
-           oy, 
+           ox,
+           oy,
            s->sprite_delta[0][0], s->sprite_delta[0][1],
-           s->sprite_delta[1][0], s->sprite_delta[1][1], 
+           s->sprite_delta[1][0], s->sprite_delta[1][1],
            a+1, (1<<(2*a+1)) - s->no_rounding,
            s->h_edge_pos>>1, s->v_edge_pos>>1);
-    
-    ptr = ref_picture[2] + (src_offset>>1);
+
+    ptr = ref_picture[2];
     s->dsp.gmc(dest_cr, ptr, uvlinesize, 8,
-           ox, 
-           oy, 
+           ox,
+           oy,
            s->sprite_delta[0][0], s->sprite_delta[0][1],
-           s->sprite_delta[1][0], s->sprite_delta[1][1], 
+           s->sprite_delta[1][0], s->sprite_delta[1][1],
            a+1, (1<<(2*a+1)) - s->no_rounding,
            s->h_edge_pos>>1, s->v_edge_pos>>1);
 }
@@ -2160,7 +2726,7 @@ static inline void gmc_motion(MpegEncContext *s,
  * @param w width of the source buffer
  * @param h height of the source buffer
  */
-void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h, 
+void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
                                     int src_x, int src_y, int w, int h){
     int x, y;
     int start_y, start_x, end_y, end_x;
@@ -2205,13 +2771,13 @@ void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w,
             buf[x + y*linesize]= buf[x + (end_y-1)*linesize];
         }
     }
-                                    
+
     for(y=0; y<block_h; y++){
        //left
         for(x=0; x<start_x; x++){
             buf[x + y*linesize]= buf[start_x + y*linesize];
         }
-       
+
        //right
         for(x=end_x; x<block_w; x++){
             buf[x + y*linesize]= buf[end_x - 1 + y*linesize];
@@ -2219,8 +2785,9 @@ void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w,
     }
 }
 
-static inline int hpel_motion(MpegEncContext *s, 
-                                  uint8_t *dest, uint8_t *src, 
+static inline int hpel_motion(MpegEncContext *s,
+                                  uint8_t *dest, uint8_t *src,
+                                  int field_based, int field_select,
                                   int src_x, int src_y,
                                   int width, int height, int stride,
                                   int h_edge_pos, int v_edge_pos,
@@ -2233,7 +2800,7 @@ static inline int hpel_motion(MpegEncContext *s,
     dxy = ((motion_y & 1) << 1) | (motion_x & 1);
     src_x += motion_x >> 1;
     src_y += motion_y >> 1;
-                
+
     /* WARNING: do no forget half pels */
     src_x = clip(src_x, -16, width); //FIXME unneeded for emu?
     if (src_x == width)
@@ -2246,28 +2813,71 @@ static inline int hpel_motion(MpegEncContext *s,
     if(s->unrestricted_mv && (s->flags&CODEC_FLAG_EMU_EDGE)){
         if(   (unsigned)src_x > h_edge_pos - (motion_x&1) - w
            || (unsigned)src_y > v_edge_pos - (motion_y&1) - h){
-            ff_emulated_edge_mc(s->edge_emu_buffer, src, stride, w+1, h+1,
-                             src_x, src_y, h_edge_pos, v_edge_pos);
+            ff_emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, w+1, (h+1)<<field_based,
+                             src_x, src_y<<field_based, h_edge_pos, s->v_edge_pos);
             src= s->edge_emu_buffer;
             emu=1;
         }
     }
+    if(field_select)
+        src += s->linesize;
     pix_op[dxy](dest, src, stride, h);
     return emu;
 }
 
+static inline int hpel_motion_lowres(MpegEncContext *s,
+                                  uint8_t *dest, uint8_t *src,
+                                  int field_based, int field_select,
+                                  int src_x, int src_y,
+                                  int width, int height, int stride,
+                                  int h_edge_pos, int v_edge_pos,
+                                  int w, int h, h264_chroma_mc_func *pix_op,
+                                  int motion_x, int motion_y)
+{
+    const int lowres= s->avctx->lowres;
+    const int s_mask= (2<<lowres)-1;
+    int emu=0;
+    int sx, sy;
+
+    if(s->quarter_sample){
+        motion_x/=2;
+        motion_y/=2;
+    }
+
+    sx= motion_x & s_mask;
+    sy= motion_y & s_mask;
+    src_x += motion_x >> (lowres+1);
+    src_y += motion_y >> (lowres+1);
+
+    src += src_y * stride + src_x;
+
+    if(   (unsigned)src_x > h_edge_pos                 - (!!sx) - w
+       || (unsigned)src_y >(v_edge_pos >> field_based) - (!!sy) - h){
+        ff_emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, w+1, (h+1)<<field_based,
+                            src_x, src_y<<field_based, h_edge_pos, v_edge_pos);
+        src= s->edge_emu_buffer;
+        emu=1;
+    }
+
+    sx <<= 2 - lowres;
+    sy <<= 2 - lowres;
+    if(field_select)
+        src += s->linesize;
+    pix_op[lowres](dest, src, stride, h, sx, sy);
+    return emu;
+}
+
 /* apply one mpeg motion vector to the three components */
-static inline void mpeg_motion(MpegEncContext *s,
+static always_inline void mpeg_motion(MpegEncContext *s,
                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                               int dest_offset,
-                               uint8_t **ref_picture, int src_offset,
-                               int field_based, op_pixels_func (*pix_op)[4],
+                               int field_based, int bottom_field, int field_select,
+                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
                                int motion_x, int motion_y, int h)
 {
-    uint8_t *ptr;
-    int dxy, offset, mx, my, src_x, src_y, height, v_edge_pos, uvlinesize;
-    int emu=0;
-#if 0    
+    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
+    int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos, uvlinesize, linesize;
+
+#if 0
 if(s->quarter_sample)
 {
     motion_x>>=1;
@@ -2275,62 +2885,202 @@ if(s->quarter_sample)
 }
 #endif
 
-    height = s->height >> field_based;
     v_edge_pos = s->v_edge_pos >> field_based;
+    linesize   = s->current_picture.linesize[0] << field_based;
     uvlinesize = s->current_picture.linesize[1] << field_based;
 
-    emu= hpel_motion(s, 
-                dest_y + dest_offset, ref_picture[0] + src_offset,
-                s->mb_x * 16, s->mb_y * (16 >> field_based),
-                s->width, height, s->current_picture.linesize[0] << field_based,
-                s->h_edge_pos, v_edge_pos,
-                16, h, pix_op[0],
-                motion_x, motion_y);
+    dxy = ((motion_y & 1) << 1) | (motion_x & 1);
+    src_x = s->mb_x* 16               + (motion_x >> 1);
+    src_y =(s->mb_y<<(4-field_based)) + (motion_y >> 1);
+
+    if (s->out_format == FMT_H263) {
+        if((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based){
+            mx = (motion_x>>1)|(motion_x&1);
+            my = motion_y >>1;
+            uvdxy = ((my & 1) << 1) | (mx & 1);
+            uvsrc_x = s->mb_x* 8               + (mx >> 1);
+            uvsrc_y = (s->mb_y<<(3-field_based)) + (my >> 1);
+        }else{
+            uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
+            uvsrc_x = src_x>>1;
+            uvsrc_y = src_y>>1;
+        }
+    }else if(s->out_format == FMT_H261){//even chroma mv's are full pel in H261
+        mx = motion_x / 4;
+        my = motion_y / 4;
+        uvdxy = 0;
+        uvsrc_x = s->mb_x*8 + mx;
+        uvsrc_y = s->mb_y*8 + my;
+    } else {
+        if(s->chroma_y_shift){
+            mx = motion_x / 2;
+            my = motion_y / 2;
+            uvdxy = ((my & 1) << 1) | (mx & 1);
+            uvsrc_x = s->mb_x* 8               + (mx >> 1);
+            uvsrc_y = (s->mb_y<<(3-field_based)) + (my >> 1);
+        } else {
+            if(s->chroma_x_shift){
+            //Chroma422
+                mx = motion_x / 2;
+                uvdxy = ((motion_y & 1) << 1) | (mx & 1);
+                uvsrc_x = s->mb_x* 8           + (mx >> 1);
+                uvsrc_y = src_y;
+            } else {
+            //Chroma444
+                uvdxy = dxy;
+                uvsrc_x = src_x;
+                uvsrc_y = src_y;
+            }
+        }
+    }
+
+    ptr_y  = ref_picture[0] + src_y * linesize + src_x;
+    ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
+    ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
 
+    if(   (unsigned)src_x > s->h_edge_pos - (motion_x&1) - 16
+       || (unsigned)src_y >    v_edge_pos - (motion_y&1) - h){
+            if(s->codec_id == CODEC_ID_MPEG2VIDEO ||
+               s->codec_id == CODEC_ID_MPEG1VIDEO){
+                av_log(s->avctx,AV_LOG_DEBUG,"MPEG motion vector out of boundary\n");
+                return ;
+            }
+            ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize, 17, 17+field_based,
+                             src_x, src_y<<field_based, s->h_edge_pos, s->v_edge_pos);
+            ptr_y = s->edge_emu_buffer;
+            if(!(s->flags&CODEC_FLAG_GRAY)){
+                uint8_t *uvbuf= s->edge_emu_buffer+18*s->linesize;
+                ff_emulated_edge_mc(uvbuf  , ptr_cb, s->uvlinesize, 9, 9+field_based,
+                                 uvsrc_x, uvsrc_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
+                ff_emulated_edge_mc(uvbuf+16, ptr_cr, s->uvlinesize, 9, 9+field_based,
+                                 uvsrc_x, uvsrc_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
+                ptr_cb= uvbuf;
+                ptr_cr= uvbuf+16;
+            }
+    }
 
-    if(s->flags&CODEC_FLAG_GRAY) return;
+    if(bottom_field){ //FIXME use this for field pix too instead of the obnoxious hack which changes picture.data
+        dest_y += s->linesize;
+        dest_cb+= s->uvlinesize;
+        dest_cr+= s->uvlinesize;
+    }
+
+    if(field_select){
+        ptr_y += s->linesize;
+        ptr_cb+= s->uvlinesize;
+        ptr_cr+= s->uvlinesize;
+    }
+
+    pix_op[0][dxy](dest_y, ptr_y, linesize, h);
+
+    if(!(s->flags&CODEC_FLAG_GRAY)){
+        pix_op[s->chroma_x_shift][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);
+        pix_op[s->chroma_x_shift][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
+    }
+#if defined(CONFIG_H261_ENCODER) || defined(CONFIG_H261_DECODER)
+    if(s->out_format == FMT_H261){
+        ff_h261_loop_filter(s);
+    }
+#endif
+}
+
+/* apply one mpeg motion vector to the three components */
+static always_inline void mpeg_motion_lowres(MpegEncContext *s,
+                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
+                               int field_based, int bottom_field, int field_select,
+                               uint8_t **ref_picture, h264_chroma_mc_func *pix_op,
+                               int motion_x, int motion_y, int h)
+{
+    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
+    int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, uvlinesize, linesize, sx, sy, uvsx, uvsy;
+    const int lowres= s->avctx->lowres;
+    const int block_s= 8>>lowres;
+    const int s_mask= (2<<lowres)-1;
+    const int h_edge_pos = s->h_edge_pos >> lowres;
+    const int v_edge_pos = s->v_edge_pos >> lowres;
+    linesize   = s->current_picture.linesize[0] << field_based;
+    uvlinesize = s->current_picture.linesize[1] << field_based;
+
+    if(s->quarter_sample){ //FIXME obviously not perfect but qpel wont work in lowres anyway
+        motion_x/=2;
+        motion_y/=2;
+    }
+
+    if(field_based){
+        motion_y += (bottom_field - field_select)*((1<<lowres)-1);
+    }
+
+    sx= motion_x & s_mask;
+    sy= motion_y & s_mask;
+    src_x = s->mb_x*2*block_s               + (motion_x >> (lowres+1));
+    src_y =(s->mb_y*2*block_s>>field_based) + (motion_y >> (lowres+1));
 
     if (s->out_format == FMT_H263) {
-        dxy = 0;
-        if ((motion_x & 3) != 0)
-            dxy |= 1;
-        if ((motion_y & 3) != 0)
-            dxy |= 2;
-        mx = motion_x >> 2;
-        my = motion_y >> 2;
+        uvsx = ((motion_x>>1) & s_mask) | (sx&1);
+        uvsy = ((motion_y>>1) & s_mask) | (sy&1);
+        uvsrc_x = src_x>>1;
+        uvsrc_y = src_y>>1;
+    }else if(s->out_format == FMT_H261){//even chroma mv's are full pel in H261
+        mx = motion_x / 4;
+        my = motion_y / 4;
+        uvsx = (2*mx) & s_mask;
+        uvsy = (2*my) & s_mask;
+        uvsrc_x = s->mb_x*block_s               + (mx >> lowres);
+        uvsrc_y = s->mb_y*block_s               + (my >> lowres);
     } else {
         mx = motion_x / 2;
         my = motion_y / 2;
-        dxy = ((my & 1) << 1) | (mx & 1);
-        mx >>= 1;
-        my >>= 1;
+        uvsx = mx & s_mask;
+        uvsy = my & s_mask;
+        uvsrc_x = s->mb_x*block_s               + (mx >> (lowres+1));
+        uvsrc_y =(s->mb_y*block_s>>field_based) + (my >> (lowres+1));
+    }
+
+    ptr_y  = ref_picture[0] + src_y * linesize + src_x;
+    ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
+    ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
+
+    if(   (unsigned)src_x > h_edge_pos                 - (!!sx) - 2*block_s
+       || (unsigned)src_y >(v_edge_pos >> field_based) - (!!sy) - h){
+            ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize, 17, 17+field_based,
+                             src_x, src_y<<field_based, h_edge_pos, v_edge_pos);
+            ptr_y = s->edge_emu_buffer;
+            if(!(s->flags&CODEC_FLAG_GRAY)){
+                uint8_t *uvbuf= s->edge_emu_buffer+18*s->linesize;
+                ff_emulated_edge_mc(uvbuf  , ptr_cb, s->uvlinesize, 9, 9+field_based,
+                                 uvsrc_x, uvsrc_y<<field_based, h_edge_pos>>1, v_edge_pos>>1);
+                ff_emulated_edge_mc(uvbuf+16, ptr_cr, s->uvlinesize, 9, 9+field_based,
+                                 uvsrc_x, uvsrc_y<<field_based, h_edge_pos>>1, v_edge_pos>>1);
+                ptr_cb= uvbuf;
+                ptr_cr= uvbuf+16;
+            }
     }
-    
-    src_x = s->mb_x * 8 + mx;
-    src_y = s->mb_y * (8 >> field_based) + my;
-    src_x = clip(src_x, -8, s->width >> 1);
-    if (src_x == (s->width >> 1))
-        dxy &= ~1;
-    src_y = clip(src_y, -8, height >> 1);
-    if (src_y == (height >> 1))
-        dxy &= ~2;
-    offset = (src_y * uvlinesize) + src_x + (src_offset >> 1);
-    ptr = ref_picture[1] + offset;
-    if(emu){
-        ff_emulated_edge_mc(s->edge_emu_buffer, ptr - (src_offset >> 1), s->uvlinesize, 9, 9+field_based, 
-                         src_x, src_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
-        ptr= s->edge_emu_buffer + (src_offset >> 1);
+
+    if(bottom_field){ //FIXME use this for field pix too instead of the obnoxious hack which changes picture.data
+        dest_y += s->linesize;
+        dest_cb+= s->uvlinesize;
+        dest_cr+= s->uvlinesize;
     }
-    pix_op[1][dxy](dest_cb + (dest_offset >> 1), ptr, uvlinesize, h >> 1);
 
-    ptr = ref_picture[2] + offset;
-    if(emu){
-        ff_emulated_edge_mc(s->edge_emu_buffer, ptr - (src_offset >> 1), s->uvlinesize, 9, 9+field_based, 
-                         src_x, src_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
-        ptr= s->edge_emu_buffer + (src_offset >> 1);
+    if(field_select){
+        ptr_y += s->linesize;
+        ptr_cb+= s->uvlinesize;
+        ptr_cr+= s->uvlinesize;
+    }
+
+    sx <<= 2 - lowres;
+    sy <<= 2 - lowres;
+    pix_op[lowres-1](dest_y, ptr_y, linesize, h, sx, sy);
+
+    if(!(s->flags&CODEC_FLAG_GRAY)){
+        uvsx <<= 2 - lowres;
+        uvsy <<= 2 - lowres;
+        pix_op[lowres](dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
+        pix_op[lowres](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
     }
-    pix_op[1][dxy](dest_cr + (dest_offset >> 1), ptr, uvlinesize, h >> 1);
+    //FIXME h261 lowres loop filter
 }
+
 //FIXME move to dsputil, avg variant, 16x16 version
 static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride){
     int x;
@@ -2346,7 +3096,7 @@ static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride){
     OBMC_FILTER(x+1       , t, l, m, r, b);\
     OBMC_FILTER(x  +stride, t, l, m, r, b);\
     OBMC_FILTER(x+1+stride, t, l, m, r, b);
-    
+
     x=0;
     OBMC_FILTER (x  , 2, 2, 4, 0, 0);
     OBMC_FILTER (x+1, 2, 1, 5, 0, 0);
@@ -2393,15 +3143,15 @@ static inline void obmc_motion(MpegEncContext *s,
 {
     int i;
     uint8_t *ptr[5];
-    
+
     assert(s->quarter_sample==0);
-    
+
     for(i=0; i<5; i++){
         if(i && mv[i][0]==mv[MID][0] && mv[i][1]==mv[MID][1]){
             ptr[i]= ptr[MID];
         }else{
-            ptr[i]= s->edge_emu_buffer + 16 + 8*(i&1) + s->linesize*8*(i>>1);
-            hpel_motion(s, ptr[i], src,
+            ptr[i]= s->obmc_scratchpad + 8*(i&1) + s->linesize*8*(i>>1);
+            hpel_motion(s, ptr[i], src, 0, 0,
                         src_x, src_y,
                         s->width, s->height, s->linesize,
                         s->h_edge_pos, s->v_edge_pos,
@@ -2410,58 +3160,26 @@ static inline void obmc_motion(MpegEncContext *s,
         }
     }
 
-    put_obmc(dest, ptr, s->linesize);                
+    put_obmc(dest, ptr, s->linesize);
 }
 
 static inline void qpel_motion(MpegEncContext *s,
                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                               int dest_offset,
-                               uint8_t **ref_picture, int src_offset,
-                               int field_based, op_pixels_func (*pix_op)[4],
+                               int field_based, int bottom_field, int field_select,
+                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
                                qpel_mc_func (*qpix_op)[16],
                                int motion_x, int motion_y, int h)
 {
-    uint8_t *ptr;
-    int dxy, offset, mx, my, src_x, src_y, height, v_edge_pos, linesize, uvlinesize;
-    int emu=0;
+    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
+    int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos, linesize, uvlinesize;
 
     dxy = ((motion_y & 3) << 2) | (motion_x & 3);
-    src_x = s->mb_x * 16 + (motion_x >> 2);
+    src_x = s->mb_x *  16                 + (motion_x >> 2);
     src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
 
-    height = s->height >> field_based;
     v_edge_pos = s->v_edge_pos >> field_based;
-    src_x = clip(src_x, -16, s->width);
-    if (src_x == s->width)
-        dxy &= ~3;
-    src_y = clip(src_y, -16, height);
-    if (src_y == height)
-        dxy &= ~12;
     linesize = s->linesize << field_based;
     uvlinesize = s->uvlinesize << field_based;
-    ptr = ref_picture[0] + (src_y * linesize) + src_x + src_offset;
-    dest_y += dest_offset;
-//printf("%d %d %d\n", src_x, src_y, dxy);
-    
-    if(s->flags&CODEC_FLAG_EMU_EDGE){
-        if(   (unsigned)src_x > s->h_edge_pos - (motion_x&3) - 16 
-           || (unsigned)src_y >    v_edge_pos - (motion_y&3) - h  ){
-            ff_emulated_edge_mc(s->edge_emu_buffer, ptr - src_offset, s->linesize, 17, 17+field_based, 
-                             src_x, src_y<<field_based, s->h_edge_pos, s->v_edge_pos);
-            ptr= s->edge_emu_buffer + src_offset;
-            emu=1;
-        }
-    }
-    if(!field_based)
-        qpix_op[0][dxy](dest_y, ptr, linesize);
-    else{
-        //damn interlaced mode
-        //FIXME boundary mirroring is not exactly correct here
-        qpix_op[1][dxy](dest_y  , ptr  , linesize);
-        qpix_op[1][dxy](dest_y+8, ptr+8, linesize);
-    }
-
-    if(s->flags&CODEC_FLAG_GRAY) return;
 
     if(field_based){
         mx= motion_x/2;
@@ -2480,35 +3198,56 @@ static inline void qpel_motion(MpegEncContext *s,
     mx= (mx>>1)|(mx&1);
     my= (my>>1)|(my&1);
 
-    dxy= (mx&1) | ((my&1)<<1);
+    uvdxy= (mx&1) | ((my&1)<<1);
     mx>>=1;
     my>>=1;
 
-    src_x = s->mb_x * 8 + mx;
-    src_y = s->mb_y * (8 >> field_based) + my;
-    src_x = clip(src_x, -8, s->width >> 1);
-    if (src_x == (s->width >> 1))
-        dxy &= ~1;
-    src_y = clip(src_y, -8, height >> 1);
-    if (src_y == (height >> 1))
-        dxy &= ~2;
+    uvsrc_x = s->mb_x *  8                 + mx;
+    uvsrc_y = s->mb_y * (8 >> field_based) + my;
 
-    offset = (src_y * uvlinesize) + src_x + (src_offset >> 1);
-    ptr = ref_picture[1] + offset;
-    if(emu){
-        ff_emulated_edge_mc(s->edge_emu_buffer, ptr - (src_offset >> 1), s->uvlinesize, 9, 9 + field_based, 
-                         src_x, src_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
-        ptr= s->edge_emu_buffer + (src_offset >> 1);
+    ptr_y  = ref_picture[0] +   src_y *   linesize +   src_x;
+    ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
+    ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
+
+    if(   (unsigned)src_x > s->h_edge_pos - (motion_x&3) - 16
+       || (unsigned)src_y >    v_edge_pos - (motion_y&3) - h  ){
+        ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize, 17, 17+field_based,
+                         src_x, src_y<<field_based, s->h_edge_pos, s->v_edge_pos);
+        ptr_y= s->edge_emu_buffer;
+        if(!(s->flags&CODEC_FLAG_GRAY)){
+            uint8_t *uvbuf= s->edge_emu_buffer + 18*s->linesize;
+            ff_emulated_edge_mc(uvbuf, ptr_cb, s->uvlinesize, 9, 9 + field_based,
+                             uvsrc_x, uvsrc_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
+            ff_emulated_edge_mc(uvbuf + 16, ptr_cr, s->uvlinesize, 9, 9 + field_based,
+                             uvsrc_x, uvsrc_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
+            ptr_cb= uvbuf;
+            ptr_cr= uvbuf + 16;
+        }
     }
-    pix_op[1][dxy](dest_cb + (dest_offset >> 1), ptr,  uvlinesize, h >> 1);
-    
-    ptr = ref_picture[2] + offset;
-    if(emu){
-        ff_emulated_edge_mc(s->edge_emu_buffer, ptr - (src_offset >> 1), s->uvlinesize, 9, 9 + field_based, 
-                         src_x, src_y<<field_based, s->h_edge_pos>>1, s->v_edge_pos>>1);
-        ptr= s->edge_emu_buffer + (src_offset >> 1);
+
+    if(!field_based)
+        qpix_op[0][dxy](dest_y, ptr_y, linesize);
+    else{
+        if(bottom_field){
+            dest_y += s->linesize;
+            dest_cb+= s->uvlinesize;
+            dest_cr+= s->uvlinesize;
+        }
+
+        if(field_select){
+            ptr_y  += s->linesize;
+            ptr_cb += s->uvlinesize;
+            ptr_cr += s->uvlinesize;
+        }
+        //damn interlaced mode
+        //FIXME boundary mirroring is not exactly correct here
+        qpix_op[1][dxy](dest_y  , ptr_y  , linesize);
+        qpix_op[1][dxy](dest_y+8, ptr_y+8, linesize);
+    }
+    if(!(s->flags&CODEC_FLAG_GRAY)){
+        pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);
+        pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);
     }
-    pix_op[1][dxy](dest_cr + (dest_offset >> 1), ptr,  uvlinesize, h >> 1);
 }
 
 inline int ff_h263_round_chroma(int x){
@@ -2530,12 +3269,12 @@ static inline void chroma_4mv_motion(MpegEncContext *s,
                                      int mx, int my){
     int dxy, emu=0, src_x, src_y, offset;
     uint8_t *ptr;
-    
+
     /* In case of 8X8, we construct a single chroma motion vector
        with a special rounding */
     mx= ff_h263_round_chroma(mx);
     my= ff_h263_round_chroma(my);
-    
+
     dxy = ((my & 1) << 1) | (mx & 1);
     mx >>= 1;
     my >>= 1;
@@ -2548,7 +3287,7 @@ static inline void chroma_4mv_motion(MpegEncContext *s,
     src_y = clip(src_y, -8, s->height/2);
     if (src_y == s->height/2)
         dxy &= ~2;
-    
+
     offset = (src_y * (s->uvlinesize)) + src_x;
     ptr = ref_picture[1] + offset;
     if(s->flags&CODEC_FLAG_EMU_EDGE){
@@ -2569,8 +3308,58 @@ static inline void chroma_4mv_motion(MpegEncContext *s,
     pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
 }
 
+static inline void chroma_4mv_motion_lowres(MpegEncContext *s,
+                                     uint8_t *dest_cb, uint8_t *dest_cr,
+                                     uint8_t **ref_picture,
+                                     h264_chroma_mc_func *pix_op,
+                                     int mx, int my){
+    const int lowres= s->avctx->lowres;
+    const int block_s= 8>>lowres;
+    const int s_mask= (2<<lowres)-1;
+    const int h_edge_pos = s->h_edge_pos >> (lowres+1);
+    const int v_edge_pos = s->v_edge_pos >> (lowres+1);
+    int emu=0, src_x, src_y, offset, sx, sy;
+    uint8_t *ptr;
+
+    if(s->quarter_sample){
+        mx/=2;
+        my/=2;
+    }
+
+    /* In case of 8X8, we construct a single chroma motion vector
+       with a special rounding */
+    mx= ff_h263_round_chroma(mx);
+    my= ff_h263_round_chroma(my);
+
+    sx= mx & s_mask;
+    sy= my & s_mask;
+    src_x = s->mb_x*block_s + (mx >> (lowres+1));
+    src_y = s->mb_y*block_s + (my >> (lowres+1));
+
+    offset = src_y * s->uvlinesize + src_x;
+    ptr = ref_picture[1] + offset;
+    if(s->flags&CODEC_FLAG_EMU_EDGE){
+        if(   (unsigned)src_x > h_edge_pos - (!!sx) - block_s
+           || (unsigned)src_y > v_edge_pos - (!!sy) - block_s){
+            ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, src_x, src_y, h_edge_pos, v_edge_pos);
+            ptr= s->edge_emu_buffer;
+            emu=1;
+        }
+    }
+    sx <<= 2 - lowres;
+    sy <<= 2 - lowres;
+    pix_op[lowres](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
+
+    ptr = ref_picture[2] + offset;
+    if(emu){
+        ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, src_x, src_y, h_edge_pos, v_edge_pos);
+        ptr= s->edge_emu_buffer;
+    }
+    pix_op[lowres](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
+}
+
 /**
- * motion compesation of a single macroblock
+ * motion compensation of a single macroblock
  * @param s context
  * @param dest_y luma destination pointer
  * @param dest_cb chroma cb/u destination pointer
@@ -2581,9 +3370,9 @@ static inline void chroma_4mv_motion(MpegEncContext *s,
  * @param pic_op qpel motion compensation function (average or put normally)
  * the motion vectors are taken from s->mv and the MV type from s->mv_type
  */
-static inline void MPV_motion(MpegEncContext *s, 
+static inline void MPV_motion(MpegEncContext *s,
                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
-                              int dir, uint8_t **ref_picture, 
+                              int dir, uint8_t **ref_picture,
                               op_pixels_func (*pix_op)[4], qpel_mc_func (*qpix_op)[16])
 {
     int dxy, mx, my, src_x, src_y, motion_x, motion_y;
@@ -2596,11 +3385,11 @@ static inline void MPV_motion(MpegEncContext *s,
     if(s->obmc && s->pict_type != B_TYPE){
         int16_t mv_cache[4][4][2];
         const int xy= s->mb_x + s->mb_y*s->mb_stride;
-        const int mot_stride= s->mb_width*2 + 2;
-        const int mot_xy= 1 + mb_x*2 + (mb_y*2 + 1)*mot_stride;
+        const int mot_stride= s->b8_stride;
+        const int mot_xy= mb_x*2 + mb_y*2*mot_stride;
+
+        assert(!s->mb_skipped);
 
-        assert(!s->mb_skiped);
-                
         memcpy(mv_cache[1][1], s->current_picture.motion_val[0][mot_xy           ], sizeof(int16_t)*4);
         memcpy(mv_cache[2][1], s->current_picture.motion_val[0][mot_xy+mot_stride], sizeof(int16_t)*4);
         memcpy(mv_cache[3][1], s->current_picture.motion_val[0][mot_xy+mot_stride], sizeof(int16_t)*4);
@@ -2626,7 +3415,7 @@ static inline void MPV_motion(MpegEncContext *s,
             *(int32_t*)mv_cache[1][3]= *(int32_t*)s->current_picture.motion_val[0][mot_xy+2];
             *(int32_t*)mv_cache[2][3]= *(int32_t*)s->current_picture.motion_val[0][mot_xy+2+mot_stride];
         }
-        
+
         mx = 0;
         my = 0;
         for(i=0;i<4;i++) {
@@ -2653,35 +3442,33 @@ static inline void MPV_motion(MpegEncContext *s,
 
         return;
     }
-   
+
     switch(s->mv_type) {
     case MV_TYPE_16X16:
-#ifdef CONFIG_RISKY
         if(s->mcsel){
             if(s->real_sprite_warping_points==1){
-                gmc1_motion(s, dest_y, dest_cb, dest_cr, 0,
-                            ref_picture, 0);
+                gmc1_motion(s, dest_y, dest_cb, dest_cr,
+                            ref_picture);
             }else{
-                gmc_motion(s, dest_y, dest_cb, dest_cr, 0,
-                            ref_picture, 0);
+                gmc_motion(s, dest_y, dest_cb, dest_cr,
+                            ref_picture);
             }
         }else if(s->quarter_sample){
-            qpel_motion(s, dest_y, dest_cb, dest_cr, 0,
-                        ref_picture, 0,
-                        0, pix_op, qpix_op,
+            qpel_motion(s, dest_y, dest_cb, dest_cr,
+                        0, 0, 0,
+                        ref_picture, pix_op, qpix_op,
                         s->mv[dir][0][0], s->mv[dir][0][1], 16);
         }else if(s->mspel){
             ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
                         ref_picture, pix_op,
                         s->mv[dir][0][0], s->mv[dir][0][1], 16);
         }else
-#endif
         {
-            mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
-                        ref_picture, 0,
-                        0, pix_op,
+            mpeg_motion(s, dest_y, dest_cb, dest_cr,
+                        0, 0, 0,
+                        ref_picture, pix_op,
                         s->mv[dir][0][0], s->mv[dir][0][1], 16);
-        }           
+        }
         break;
     case MV_TYPE_8X8:
         mx = 0;
@@ -2694,7 +3481,7 @@ static inline void MPV_motion(MpegEncContext *s,
                 dxy = ((motion_y & 3) << 2) | (motion_x & 3);
                 src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;
                 src_y = mb_y * 16 + (motion_y >> 2) + (i >>1) * 8;
-                    
+
                 /* WARNING: do no forget half pels */
                 src_x = clip(src_x, -16, s->width);
                 if (src_x == s->width)
@@ -2702,10 +3489,10 @@ static inline void MPV_motion(MpegEncContext *s,
                 src_y = clip(src_y, -16, s->height);
                 if (src_y == s->height)
                     dxy &= ~12;
-                    
+
                 ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
                 if(s->flags&CODEC_FLAG_EMU_EDGE){
-                    if(   (unsigned)src_x > s->h_edge_pos - (motion_x&3) - 8 
+                    if(   (unsigned)src_x > s->h_edge_pos - (motion_x&3) - 8
                        || (unsigned)src_y > s->v_edge_pos - (motion_y&3) - 8 ){
                         ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->linesize, 9, 9, src_x, src_y, s->h_edge_pos, s->v_edge_pos);
                         ptr= s->edge_emu_buffer;
@@ -2720,7 +3507,7 @@ static inline void MPV_motion(MpegEncContext *s,
         }else{
             for(i=0;i<4;i++) {
                 hpel_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
-                            ref_picture[0],
+                            ref_picture[0], 0, 0,
                             mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
                             s->width, s->height, s->linesize,
                             s->h_edge_pos, s->v_edge_pos,
@@ -2738,148 +3525,216 @@ static inline void MPV_motion(MpegEncContext *s,
     case MV_TYPE_FIELD:
         if (s->picture_structure == PICT_FRAME) {
             if(s->quarter_sample){
-                /* top field */
-                qpel_motion(s, dest_y, dest_cb, dest_cr, 0,
-                            ref_picture, s->field_select[dir][0] ? s->linesize : 0,
-                            1, pix_op, qpix_op,
-                            s->mv[dir][0][0], s->mv[dir][0][1], 8);
-                /* bottom field */
-                qpel_motion(s, dest_y, dest_cb, dest_cr, s->linesize,
-                            ref_picture, s->field_select[dir][1] ? s->linesize : 0,
-                            1, pix_op, qpix_op,
-                            s->mv[dir][1][0], s->mv[dir][1][1], 8);
+                for(i=0; i<2; i++){
+                    qpel_motion(s, dest_y, dest_cb, dest_cr,
+                                1, i, s->field_select[dir][i],
+                                ref_picture, pix_op, qpix_op,
+                                s->mv[dir][i][0], s->mv[dir][i][1], 8);
+                }
             }else{
-                /* top field */       
-                mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
-                            ref_picture, s->field_select[dir][0] ? s->linesize : 0,
-                            1, pix_op,
+                /* top field */
+                mpeg_motion(s, dest_y, dest_cb, dest_cr,
+                            1, 0, s->field_select[dir][0],
+                            ref_picture, pix_op,
                             s->mv[dir][0][0], s->mv[dir][0][1], 8);
                 /* bottom field */
-                mpeg_motion(s, dest_y, dest_cb, dest_cr, s->linesize,
-                            ref_picture, s->field_select[dir][1] ? s->linesize : 0,
-                            1, pix_op,
+                mpeg_motion(s, dest_y, dest_cb, dest_cr,
+                            1, 1, s->field_select[dir][1],
+                            ref_picture, pix_op,
                             s->mv[dir][1][0], s->mv[dir][1][1], 8);
             }
         } else {
-            int offset;
-            if(s->picture_structure == s->field_select[dir][0] + 1 || s->pict_type == B_TYPE || s->first_field){
-                offset= s->field_select[dir][0] ? s->linesize : 0;
-            }else{
-                ref_picture= s->current_picture.data;
-                offset= s->field_select[dir][0] ? s->linesize : -s->linesize; 
-            } 
+            if(s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != B_TYPE && !s->first_field){
+                ref_picture= s->current_picture_ptr->data;
+            }
 
-            mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
-                        ref_picture, offset,
-                        0, pix_op,
+            mpeg_motion(s, dest_y, dest_cb, dest_cr,
+                        0, 0, s->field_select[dir][0],
+                        ref_picture, pix_op,
                         s->mv[dir][0][0], s->mv[dir][0][1], 16);
         }
         break;
-    case MV_TYPE_16X8:{
-        int offset;
-         uint8_t ** ref2picture;
+    case MV_TYPE_16X8:
+        for(i=0; i<2; i++){
+            uint8_t ** ref2picture;
 
-            if(s->picture_structure == s->field_select[dir][0] + 1 || s->pict_type == B_TYPE || s->first_field){
+            if(s->picture_structure == s->field_select[dir][i] + 1 || s->pict_type == B_TYPE || s->first_field){
                 ref2picture= ref_picture;
-                offset= s->field_select[dir][0] ? s->linesize : 0;
             }else{
-                ref2picture= s->current_picture.data;
-                offset= s->field_select[dir][0] ? s->linesize : -s->linesize; 
-            } 
+                ref2picture= s->current_picture_ptr->data;
+            }
+
+            mpeg_motion(s, dest_y, dest_cb, dest_cr,
+                        0, 0, s->field_select[dir][i],
+                        ref2picture, pix_op,
+                        s->mv[dir][i][0], s->mv[dir][i][1] + 16*i, 8);
+
+            dest_y += 16*s->linesize;
+            dest_cb+= (16>>s->chroma_y_shift)*s->uvlinesize;
+            dest_cr+= (16>>s->chroma_y_shift)*s->uvlinesize;
+        }
+        break;
+    case MV_TYPE_DMV:
+        if(s->picture_structure == PICT_FRAME){
+            for(i=0; i<2; i++){
+                int j;
+                for(j=0; j<2; j++){
+                    mpeg_motion(s, dest_y, dest_cb, dest_cr,
+                                1, j, j^i,
+                                ref_picture, pix_op,
+                                s->mv[dir][2*i + j][0], s->mv[dir][2*i + j][1], 8);
+                }
+                pix_op = s->dsp.avg_pixels_tab;
+            }
+        }else{
+            for(i=0; i<2; i++){
+                mpeg_motion(s, dest_y, dest_cb, dest_cr,
+                            0, 0, s->picture_structure != i+1,
+                            ref_picture, pix_op,
+                            s->mv[dir][2*i][0],s->mv[dir][2*i][1],16);
+
+                // after put we make avg of the same block
+                pix_op=s->dsp.avg_pixels_tab;
+
+                //opposite parity is always in the same frame if this is second field
+                if(!s->first_field){
+                    ref_picture = s->current_picture_ptr->data;
+                }
+            }
+        }
+    break;
+    default: assert(0);
+    }
+}
+
+/**
+ * motion compensation of a single macroblock
+ * @param s context
+ * @param dest_y luma destination pointer
+ * @param dest_cb chroma cb/u destination pointer
+ * @param dest_cr chroma cr/v destination pointer
+ * @param dir direction (0->forward, 1->backward)
+ * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
+ * @param pic_op halfpel motion compensation function (average or put normally)
+ * the motion vectors are taken from s->mv and the MV type from s->mv_type
+ */
+static inline void MPV_motion_lowres(MpegEncContext *s,
+                              uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
+                              int dir, uint8_t **ref_picture,
+                              h264_chroma_mc_func *pix_op)
+{
+    int mx, my;
+    int mb_x, mb_y, i;
+    const int lowres= s->avctx->lowres;
+    const int block_s= 8>>lowres;
+
+    mb_x = s->mb_x;
+    mb_y = s->mb_y;
+
+    switch(s->mv_type) {
+    case MV_TYPE_16X16:
+        mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                    0, 0, 0,
+                    ref_picture, pix_op,
+                    s->mv[dir][0][0], s->mv[dir][0][1], 2*block_s);
+        break;
+    case MV_TYPE_8X8:
+        mx = 0;
+        my = 0;
+            for(i=0;i<4;i++) {
+                hpel_motion_lowres(s, dest_y + ((i & 1) + (i >> 1) * s->linesize)*block_s,
+                            ref_picture[0], 0, 0,
+                            (2*mb_x + (i & 1))*block_s, (2*mb_y + (i >>1))*block_s,
+                            s->width, s->height, s->linesize,
+                            s->h_edge_pos >> lowres, s->v_edge_pos >> lowres,
+                            block_s, block_s, pix_op,
+                            s->mv[dir][i][0], s->mv[dir][i][1]);
+
+                mx += s->mv[dir][i][0];
+                my += s->mv[dir][i][1];
+            }
 
-            mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
-                        ref2picture, offset,
-                        0, pix_op,
-                        s->mv[dir][0][0], s->mv[dir][0][1], 8);
+        if(!(s->flags&CODEC_FLAG_GRAY))
+            chroma_4mv_motion_lowres(s, dest_cb, dest_cr, ref_picture, pix_op, mx, my);
+        break;
+    case MV_TYPE_FIELD:
+        if (s->picture_structure == PICT_FRAME) {
+            /* top field */
+            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                        1, 0, s->field_select[dir][0],
+                        ref_picture, pix_op,
+                        s->mv[dir][0][0], s->mv[dir][0][1], block_s);
+            /* bottom field */
+            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                        1, 1, s->field_select[dir][1],
+                        ref_picture, pix_op,
+                        s->mv[dir][1][0], s->mv[dir][1][1], block_s);
+        } else {
+            if(s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != B_TYPE && !s->first_field){
+                ref_picture= s->current_picture_ptr->data;
+            }
 
+            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                        0, 0, s->field_select[dir][0],
+                        ref_picture, pix_op,
+                        s->mv[dir][0][0], s->mv[dir][0][1], 2*block_s);
+        }
+        break;
+    case MV_TYPE_16X8:
+        for(i=0; i<2; i++){
+            uint8_t ** ref2picture;
 
-            if(s->picture_structure == s->field_select[dir][1] + 1 || s->pict_type == B_TYPE || s->first_field){
+            if(s->picture_structure == s->field_select[dir][i] + 1 || s->pict_type == B_TYPE || s->first_field){
                 ref2picture= ref_picture;
-                offset= s->field_select[dir][1] ? s->linesize : 0;
             }else{
-                ref2picture= s->current_picture.data;
-                offset= s->field_select[dir][1] ? s->linesize : -s->linesize; 
-            } 
-            // I know it is ugly but this is the only way to fool emu_edge without rewrite mpeg_motion
-            mpeg_motion(s, dest_y+16*s->linesize, dest_cb+8*s->uvlinesize, dest_cr+8*s->uvlinesize,
-                        0,
-                        ref2picture, offset,
-                        0, pix_op,
-                        s->mv[dir][1][0], s->mv[dir][1][1]+16, 8);
-        }
-        
-        break;
-    case MV_TYPE_DMV:
-    {
-    op_pixels_func (*dmv_pix_op)[4];
-    int offset;
+                ref2picture= s->current_picture_ptr->data;
+            }
 
-        dmv_pix_op = s->dsp.put_pixels_tab;
+            mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                        0, 0, s->field_select[dir][i],
+                        ref2picture, pix_op,
+                        s->mv[dir][i][0], s->mv[dir][i][1] + 2*block_s*i, block_s);
 
+            dest_y += 2*block_s*s->linesize;
+            dest_cb+= (2*block_s>>s->chroma_y_shift)*s->uvlinesize;
+            dest_cr+= (2*block_s>>s->chroma_y_shift)*s->uvlinesize;
+        }
+        break;
+    case MV_TYPE_DMV:
         if(s->picture_structure == PICT_FRAME){
-            //put top field from top field
-            mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
-                        ref_picture, 0,
-                        1, dmv_pix_op,
-                        s->mv[dir][0][0], s->mv[dir][0][1], 8);
-            //put bottom field from bottom field
-            mpeg_motion(s, dest_y, dest_cb, dest_cr, s->linesize,
-                        ref_picture, s->linesize,
-                        1, dmv_pix_op,
-                        s->mv[dir][0][0], s->mv[dir][0][1], 8);
-
-            dmv_pix_op = s->dsp.avg_pixels_tab; 
-        
-            //avg top field from bottom field
-            mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
-                        ref_picture, s->linesize,
-                        1, dmv_pix_op,
-                        s->mv[dir][2][0], s->mv[dir][2][1], 8);
-            //avg bottom field from top field
-            mpeg_motion(s, dest_y, dest_cb, dest_cr, s->linesize,
-                        ref_picture, 0,
-                        1, dmv_pix_op,
-                        s->mv[dir][3][0], s->mv[dir][3][1], 8);
-
+            for(i=0; i<2; i++){
+                int j;
+                for(j=0; j<2; j++){
+                    mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                                1, j, j^i,
+                                ref_picture, pix_op,
+                                s->mv[dir][2*i + j][0], s->mv[dir][2*i + j][1], block_s);
+                }
+                pix_op = s->dsp.avg_h264_chroma_pixels_tab;
+            }
         }else{
-            offset=(s->picture_structure == PICT_BOTTOM_FIELD)? 
-                         s->linesize : 0;
-
-            //put field from the same parity
-            //same parity is never in the same frame
-            mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
-                        ref_picture,offset,
-                        0,dmv_pix_op,
-                        s->mv[dir][0][0],s->mv[dir][0][1],16);
-
-            // after put we make avg of the same block
-            dmv_pix_op=s->dsp.avg_pixels_tab; 
-
-            //opposite parity is always in the same frame if this is second field
-            if(!s->first_field){
-                ref_picture = s->current_picture.data;    
-                //top field is one linesize from frame beginig
-                offset=(s->picture_structure == PICT_BOTTOM_FIELD)? 
-                        -s->linesize : s->linesize;
-            }else 
-                offset=(s->picture_structure == PICT_BOTTOM_FIELD)? 
-                        0 : s->linesize;
-
-            //avg field from the opposite parity
-            mpeg_motion(s, dest_y, dest_cb, dest_cr,0,
-                        ref_picture, offset,
-                        0,dmv_pix_op,
-                        s->mv[dir][2][0],s->mv[dir][2][1],16);
+            for(i=0; i<2; i++){
+                mpeg_motion_lowres(s, dest_y, dest_cb, dest_cr,
+                            0, 0, s->picture_structure != i+1,
+                            ref_picture, pix_op,
+                            s->mv[dir][2*i][0],s->mv[dir][2*i][1],2*block_s);
+
+                // after put we make avg of the same block
+                pix_op = s->dsp.avg_h264_chroma_pixels_tab;
+
+                //opposite parity is always in the same frame if this is second field
+                if(!s->first_field){
+                    ref_picture = s->current_picture_ptr->data;
+                }
+            }
         }
-    }
     break;
     default: assert(0);
     }
 }
 
-
 /* put block[] to dest[] */
-static inline void put_dct(MpegEncContext *s, 
+static inline void put_dct(MpegEncContext *s,
                            DCTELEM *block, int i, uint8_t *dest, int line_size, int qscale)
 {
     s->dct_unquantize_intra(s, block, i, qscale);
@@ -2887,7 +3742,7 @@ static inline void put_dct(MpegEncContext *s,
 }
 
 /* add block[] to dest[] */
-static inline void add_dct(MpegEncContext *s, 
+static inline void add_dct(MpegEncContext *s,
                            DCTELEM *block, int i, uint8_t *dest, int line_size)
 {
     if (s->block_last_index[i] >= 0) {
@@ -2895,7 +3750,7 @@ static inline void add_dct(MpegEncContext *s,
     }
 }
 
-static inline void add_dequant_dct(MpegEncContext *s, 
+static inline void add_dequant_dct(MpegEncContext *s,
                            DCTELEM *block, int i, uint8_t *dest, int line_size, int qscale)
 {
     if (s->block_last_index[i] >= 0) {
@@ -2910,11 +3765,11 @@ static inline void add_dequant_dct(MpegEncContext *s,
  */
 void ff_clean_intra_table_entries(MpegEncContext *s)
 {
-    int wrap = s->block_wrap[0];
+    int wrap = s->b8_stride;
     int xy = s->block_index[0];
-    
-    s->dc_val[0][xy           ] = 
-    s->dc_val[0][xy + 1       ] = 
+
+    s->dc_val[0][xy           ] =
+    s->dc_val[0][xy + 1       ] =
     s->dc_val[0][xy     + wrap] =
     s->dc_val[0][xy + 1 + wrap] = 1024;
     /* ac pred */
@@ -2927,15 +3782,15 @@ void ff_clean_intra_table_entries(MpegEncContext *s)
         s->coded_block[xy + 1 + wrap] = 0;
     }
     /* chroma */
-    wrap = s->block_wrap[4];
-    xy = s->mb_x + 1 + (s->mb_y + 1) * wrap;
+    wrap = s->mb_stride;
+    xy = s->mb_x + s->mb_y * wrap;
     s->dc_val[1][xy] =
     s->dc_val[2][xy] = 1024;
     /* ac pred */
     memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t));
     memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t));
-    
-    s->mbintra_table[s->mb_x + s->mb_y*s->mb_stride]= 0;
+
+    s->mbintra_table[xy]= 0;
 }
 
 /* generic function called after a macroblock has been parsed by the
@@ -2948,7 +3803,7 @@ void ff_clean_intra_table_entries(MpegEncContext *s)
    s->mv       : motion vector
    s->interlaced_dct : true if interlaced dct used (mpeg2)
  */
-void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
+static always_inline void MPV_decode_mb_internal(MpegEncContext *s, DCTELEM block[12][64], int lowres_flag)
 {
     int mb_x, mb_y;
     const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
@@ -2962,6 +3817,15 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
     mb_x = s->mb_x;
     mb_y = s->mb_y;
 
+    if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
+       /* save DCT coefficients */
+       int i,j;
+       DCTELEM *dct = &s->current_picture.dct_coeff[mb_xy*64*6];
+       for(i=0; i<6; i++)
+           for(j=0; j<64; j++)
+               *dct++ = block[i][s->dsp.idct_permutation[j]];
+    }
+
     s->current_picture.qscale_table[mb_xy]= s->qscale;
 
     /* update DC predictors for P macroblocks */
@@ -2983,9 +3847,10 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
         int dct_linesize, dct_offset;
         op_pixels_func (*op_pix)[4];
         qpel_mc_func (*op_qpix)[16];
-        const int linesize= s->current_picture.linesize[0]; //not s->linesize as this woulnd be wrong for field pics
+        const int linesize= s->current_picture.linesize[0]; //not s->linesize as this would be wrong for field pics
         const int uvlinesize= s->current_picture.linesize[1];
-        const int readable= s->pict_type != B_TYPE || s->encoding || s->avctx->draw_horiz_band;
+        const int readable= s->pict_type != B_TYPE || s->encoding || s->avctx->draw_horiz_band || lowres_flag;
+        const int block_size= lowres_flag ? 8>>s->avctx->lowres : 8;
 
         /* avoid copy if macroblock skipped in last frame too */
         /* skip only during decoding as we might trash the buffers during encoding a bit */
@@ -2995,11 +3860,11 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
 
             assert(age);
 
-            if (s->mb_skiped) {
-                s->mb_skiped= 0;
+            if (s->mb_skipped) {
+                s->mb_skipped= 0;
                 assert(s->pict_type!=I_TYPE);
-                (*mbskip_ptr) ++; /* indicate that this time we skiped it */
+
+                (*mbskip_ptr) ++; /* indicate that this time we skipped it */
                 if(*mbskip_ptr >99) *mbskip_ptr= 99;
 
                 /* if previous was skipped too, then nothing to do !  */
@@ -3014,107 +3879,159 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
             }
         }
 
-        if (s->interlaced_dct) {
-            dct_linesize = linesize * 2;
-            dct_offset = linesize;
-        } else {
-            dct_linesize = linesize;
-            dct_offset = linesize * 8;
-        }
+        dct_linesize = linesize << s->interlaced_dct;
+        dct_offset =(s->interlaced_dct)? linesize : linesize*block_size;
+
         if(readable){
             dest_y=  s->dest[0];
             dest_cb= s->dest[1];
             dest_cr= s->dest[2];
         }else{
-            dest_y = s->edge_emu_buffer+32; //FIXME cleanup scratchpad pointers
-            dest_cb= s->edge_emu_buffer+48;
-            dest_cr= s->edge_emu_buffer+56;
+            dest_y = s->b_scratchpad;
+            dest_cb= s->b_scratchpad+16*linesize;
+            dest_cr= s->b_scratchpad+32*linesize;
         }
+
         if (!s->mb_intra) {
             /* motion handling */
-            /* decoding or more than one mb_type (MC was allready done otherwise) */
+            /* decoding or more than one mb_type (MC was already done otherwise) */
             if(!s->encoding){
-                if ((!s->no_rounding) || s->pict_type==B_TYPE){                
-                   op_pix = s->dsp.put_pixels_tab;
-                    op_qpix= s->dsp.put_qpel_pixels_tab;
-                }else{
-                    op_pix = s->dsp.put_no_rnd_pixels_tab;
-                    op_qpix= s->dsp.put_no_rnd_qpel_pixels_tab;
-                }
+                if(lowres_flag){
+                    h264_chroma_mc_func *op_pix = s->dsp.put_h264_chroma_pixels_tab;
 
-                if (s->mv_dir & MV_DIR_FORWARD) {
-                    MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
-                   op_pix = s->dsp.avg_pixels_tab;
-                    op_qpix= s->dsp.avg_qpel_pixels_tab;
-                }
-                if (s->mv_dir & MV_DIR_BACKWARD) {
-                    MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
+                    if (s->mv_dir & MV_DIR_FORWARD) {
+                        MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix);
+                        op_pix = s->dsp.avg_h264_chroma_pixels_tab;
+                    }
+                    if (s->mv_dir & MV_DIR_BACKWARD) {
+                        MPV_motion_lowres(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix);
+                    }
+                }else{
+                    if ((!s->no_rounding) || s->pict_type==B_TYPE){
+                        op_pix = s->dsp.put_pixels_tab;
+                        op_qpix= s->dsp.put_qpel_pixels_tab;
+                    }else{
+                        op_pix = s->dsp.put_no_rnd_pixels_tab;
+                        op_qpix= s->dsp.put_no_rnd_qpel_pixels_tab;
+                    }
+                    if (s->mv_dir & MV_DIR_FORWARD) {
+                        MPV_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.data, op_pix, op_qpix);
+                        op_pix = s->dsp.avg_pixels_tab;
+                        op_qpix= s->dsp.avg_qpel_pixels_tab;
+                    }
+                    if (s->mv_dir & MV_DIR_BACKWARD) {
+                        MPV_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.data, op_pix, op_qpix);
+                    }
                 }
             }
 
             /* skip dequant / idct if we are really late ;) */
-            if(s->hurry_up>1) return;
+            if(s->hurry_up>1) goto skip_idct;
+            if(s->avctx->skip_idct){
+                if(  (s->avctx->skip_idct >= AVDISCARD_NONREF && s->pict_type == B_TYPE)
+                   ||(s->avctx->skip_idct >= AVDISCARD_NONKEY && s->pict_type != I_TYPE)
+                   || s->avctx->skip_idct >= AVDISCARD_ALL)
+                    goto skip_idct;
+            }
 
             /* add dct residue */
             if(s->encoding || !(   s->h263_msmpeg4 || s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO
                                 || (s->codec_id==CODEC_ID_MPEG4 && !s->mpeg_quant))){
-                add_dequant_dct(s, block[0], 0, dest_y, dct_linesize, s->qscale);
-                add_dequant_dct(s, block[1], 1, dest_y + 8, dct_linesize, s->qscale);
-                add_dequant_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize, s->qscale);
-                add_dequant_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize, s->qscale);
+                add_dequant_dct(s, block[0], 0, dest_y                          , dct_linesize, s->qscale);
+                add_dequant_dct(s, block[1], 1, dest_y              + block_size, dct_linesize, s->qscale);
+                add_dequant_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize, s->qscale);
+                add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
 
                 if(!(s->flags&CODEC_FLAG_GRAY)){
                     add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
                     add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
                 }
             } else if(s->codec_id != CODEC_ID_WMV2){
-                add_dct(s, block[0], 0, dest_y, dct_linesize);
-                add_dct(s, block[1], 1, dest_y + 8, dct_linesize);
-                add_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize);
-                add_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize);
+                add_dct(s, block[0], 0, dest_y                          , dct_linesize);
+                add_dct(s, block[1], 1, dest_y              + block_size, dct_linesize);
+                add_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize);
+                add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize);
 
                 if(!(s->flags&CODEC_FLAG_GRAY)){
-                    add_dct(s, block[4], 4, dest_cb, uvlinesize);
-                    add_dct(s, block[5], 5, dest_cr, uvlinesize);
-                }
-            } 
-#ifdef CONFIG_RISKY
+                    if(s->chroma_y_shift){//Chroma420
+                        add_dct(s, block[4], 4, dest_cb, uvlinesize);
+                        add_dct(s, block[5], 5, dest_cr, uvlinesize);
+                    }else{
+                        //chroma422
+                        dct_linesize = uvlinesize << s->interlaced_dct;
+                        dct_offset =(s->interlaced_dct)? uvlinesize : uvlinesize*8;
+
+                        add_dct(s, block[4], 4, dest_cb, dct_linesize);
+                        add_dct(s, block[5], 5, dest_cr, dct_linesize);
+                        add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
+                        add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
+                        if(!s->chroma_x_shift){//Chroma444
+                            add_dct(s, block[8], 8, dest_cb+8, dct_linesize);
+                            add_dct(s, block[9], 9, dest_cr+8, dct_linesize);
+                            add_dct(s, block[10], 10, dest_cb+8+dct_offset, dct_linesize);
+                            add_dct(s, block[11], 11, dest_cr+8+dct_offset, dct_linesize);
+                        }
+                    }
+                }//fi gray
+            }
             else{
                 ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr);
             }
-#endif
         } else {
             /* dct only in intra block */
             if(s->encoding || !(s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO)){
-                put_dct(s, block[0], 0, dest_y, dct_linesize, s->qscale);
-                put_dct(s, block[1], 1, dest_y + 8, dct_linesize, s->qscale);
-                put_dct(s, block[2], 2, dest_y + dct_offset, dct_linesize, s->qscale);
-                put_dct(s, block[3], 3, dest_y + dct_offset + 8, dct_linesize, s->qscale);
+                put_dct(s, block[0], 0, dest_y                          , dct_linesize, s->qscale);
+                put_dct(s, block[1], 1, dest_y              + block_size, dct_linesize, s->qscale);
+                put_dct(s, block[2], 2, dest_y + dct_offset             , dct_linesize, s->qscale);
+                put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale);
 
                 if(!(s->flags&CODEC_FLAG_GRAY)){
                     put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale);
                     put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale);
                 }
             }else{
-                s->dsp.idct_put(dest_y                 , dct_linesize, block[0]);
-                s->dsp.idct_put(dest_y              + 8, dct_linesize, block[1]);
-                s->dsp.idct_put(dest_y + dct_offset    , dct_linesize, block[2]);
-                s->dsp.idct_put(dest_y + dct_offset + 8, dct_linesize, block[3]);
+                s->dsp.idct_put(dest_y                          , dct_linesize, block[0]);
+                s->dsp.idct_put(dest_y              + block_size, dct_linesize, block[1]);
+                s->dsp.idct_put(dest_y + dct_offset             , dct_linesize, block[2]);
+                s->dsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]);
 
                 if(!(s->flags&CODEC_FLAG_GRAY)){
-                    s->dsp.idct_put(dest_cb, uvlinesize, block[4]);
-                    s->dsp.idct_put(dest_cr, uvlinesize, block[5]);
-                }
+                    if(s->chroma_y_shift){
+                        s->dsp.idct_put(dest_cb, uvlinesize, block[4]);
+                        s->dsp.idct_put(dest_cr, uvlinesize, block[5]);
+                    }else{
+
+                        dct_linesize = uvlinesize << s->interlaced_dct;
+                        dct_offset =(s->interlaced_dct)? uvlinesize : uvlinesize*8;
+
+                        s->dsp.idct_put(dest_cb,              dct_linesize, block[4]);
+                        s->dsp.idct_put(dest_cr,              dct_linesize, block[5]);
+                        s->dsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]);
+                        s->dsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]);
+                        if(!s->chroma_x_shift){//Chroma444
+                            s->dsp.idct_put(dest_cb + 8,              dct_linesize, block[8]);
+                            s->dsp.idct_put(dest_cr + 8,              dct_linesize, block[9]);
+                            s->dsp.idct_put(dest_cb + 8 + dct_offset, dct_linesize, block[10]);
+                            s->dsp.idct_put(dest_cr + 8 + dct_offset, dct_linesize, block[11]);
+                        }
+                    }
+                }//gray
             }
         }
+skip_idct:
         if(!readable){
             s->dsp.put_pixels_tab[0][0](s->dest[0], dest_y ,   linesize,16);
-            s->dsp.put_pixels_tab[1][0](s->dest[1], dest_cb, uvlinesize, 8);
-            s->dsp.put_pixels_tab[1][0](s->dest[2], dest_cr, uvlinesize, 8);
+            s->dsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift);
+            s->dsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift);
         }
     }
 }
 
+void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]){
+    if(s->avctx->lowres) MPV_decode_mb_internal(s, block, 1);
+    else                  MPV_decode_mb_internal(s, block, 0);
+}
+
 #ifdef CONFIG_ENCODERS
 
 static inline void dct_single_coeff_elimination(MpegEncContext *s, int n, int threshold)
@@ -3172,16 +4089,16 @@ static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block, int last_index
     const int maxlevel= s->max_qcoeff;
     const int minlevel= s->min_qcoeff;
     int overflow=0;
-    
+
     if(s->mb_intra){
         i=1; //skip clipping of intra dc
     }else
         i=0;
-    
+
     for(;i<=last_index; i++){
         const int j= s->intra_scantable.permutated[i];
         int level = block[j];
-       
+
         if     (level>maxlevel){
             level=maxlevel;
             overflow++;
@@ -3189,12 +4106,12 @@ static inline void clip_coeffs(MpegEncContext *s, DCTELEM *block, int last_index
             level=minlevel;
             overflow++;
         }
-        
+
         block[j]= level;
     }
-    
+
     if(overflow && s->avctx->mb_decision == FF_MB_DECISION_SIMPLE)
-        av_log(s->avctx, AV_LOG_INFO, "warning, cliping %d dct coefficents to %d..%d\n", overflow, minlevel, maxlevel);
+        av_log(s->avctx, AV_LOG_INFO, "warning, clipping %d dct coefficients to %d..%d\n", overflow, minlevel, maxlevel);
 }
 
 #endif //CONFIG_ENCODERS
@@ -3207,22 +4124,22 @@ void ff_draw_horiz_band(MpegEncContext *s, int y, int h){
     if (s->avctx->draw_horiz_band) {
         AVFrame *src;
         int offset[4];
-        
+
         if(s->picture_structure != PICT_FRAME){
             h <<= 1;
             y <<= 1;
             if(s->first_field  && !(s->avctx->slice_flags&SLICE_FLAG_ALLOW_FIELD)) return;
         }
 
-        h= FFMIN(h, s->height - y);
+        h= FFMIN(h, s->avctx->height - y);
 
-        if(s->pict_type==B_TYPE || s->low_delay || (s->avctx->slice_flags&SLICE_FLAG_CODED_ORDER)) 
+        if(s->pict_type==B_TYPE || s->low_delay || (s->avctx->slice_flags&SLICE_FLAG_CODED_ORDER))
             src= (AVFrame*)s->current_picture_ptr;
         else if(s->last_picture_ptr)
             src= (AVFrame*)s->last_picture_ptr;
         else
             return;
-            
+
         if(s->pict_type==B_TYPE && s->picture_structure == PICT_FRAME && s->out_format != FMT_H264){
             offset[0]=
             offset[1]=
@@ -3230,8 +4147,8 @@ void ff_draw_horiz_band(MpegEncContext *s, int y, int h){
             offset[3]= 0;
         }else{
             offset[0]= y * s->linesize;;
-            offset[1]= 
-            offset[2]= (y>>1) * s->uvlinesize;;
+            offset[1]=
+            offset[2]= (y >> s->chroma_y_shift) * s->uvlinesize;
             offset[3]= 0;
         }
 
@@ -3243,25 +4160,28 @@ void ff_draw_horiz_band(MpegEncContext *s, int y, int h){
 }
 
 void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename
-    const int linesize= s->current_picture.linesize[0]; //not s->linesize as this woulnd be wrong for field pics
+    const int linesize= s->current_picture.linesize[0]; //not s->linesize as this would be wrong for field pics
     const int uvlinesize= s->current_picture.linesize[1];
-        
-    s->block_index[0]= s->block_wrap[0]*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
-    s->block_index[1]= s->block_wrap[0]*(s->mb_y*2 + 1)     + s->mb_x*2;
-    s->block_index[2]= s->block_wrap[0]*(s->mb_y*2 + 2) - 1 + s->mb_x*2;
-    s->block_index[3]= s->block_wrap[0]*(s->mb_y*2 + 2)     + s->mb_x*2;
-    s->block_index[4]= s->block_wrap[4]*(s->mb_y + 1)                    + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
-    s->block_index[5]= s->block_wrap[4]*(s->mb_y + 1 + s->mb_height + 2) + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
-    
-    if(s->pict_type==B_TYPE && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME){
-        s->dest[0] = s->current_picture.data[0] + s->mb_x * 16 - 16;
-        s->dest[1] = s->current_picture.data[1] + s->mb_x * 8 - 8;
-        s->dest[2] = s->current_picture.data[2] + s->mb_x * 8 - 8;
-    }else{
-        s->dest[0] = s->current_picture.data[0] + (s->mb_y * 16* linesize  ) + s->mb_x * 16 - 16;
-        s->dest[1] = s->current_picture.data[1] + (s->mb_y * 8 * uvlinesize) + s->mb_x * 8 - 8;
-        s->dest[2] = s->current_picture.data[2] + (s->mb_y * 8 * uvlinesize) + s->mb_x * 8 - 8;
-    }    
+    const int mb_size= 4 - s->avctx->lowres;
+
+    s->block_index[0]= s->b8_stride*(s->mb_y*2    ) - 2 + s->mb_x*2;
+    s->block_index[1]= s->b8_stride*(s->mb_y*2    ) - 1 + s->mb_x*2;
+    s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2;
+    s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
+    s->block_index[4]= s->mb_stride*(s->mb_y + 1)                + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
+    s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x - 1;
+    //block_index is not used by mpeg2, so it is not affected by chroma_format
+
+    s->dest[0] = s->current_picture.data[0] + ((s->mb_x - 1) << mb_size);
+    s->dest[1] = s->current_picture.data[1] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
+    s->dest[2] = s->current_picture.data[2] + ((s->mb_x - 1) << (mb_size - s->chroma_x_shift));
+
+    if(!(s->pict_type==B_TYPE && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME))
+    {
+        s->dest[0] += s->mb_y *   linesize << mb_size;
+        s->dest[1] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
+        s->dest[2] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift);
+    }
 }
 
 #ifdef CONFIG_ENCODERS
@@ -3300,32 +4220,39 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
     int dct_offset   = s->linesize*8; //default for progressive frames
     uint8_t *ptr_y, *ptr_cb, *ptr_cr;
     int wrap_y, wrap_c;
-    int emu=0;
-    
+
     for(i=0; i<6; i++) skip_dct[i]=0;
-    
+
     if(s->adaptive_quant){
         const int last_qp= s->qscale;
         const int mb_xy= mb_x + mb_y*s->mb_stride;
 
         s->lambda= s->lambda_table[mb_xy];
         update_qscale(s);
-    
+
         if(!(s->flags&CODEC_FLAG_QP_RD)){
             s->dquant= s->qscale - last_qp;
 
-            if(s->out_format==FMT_H263)
+            if(s->out_format==FMT_H263){
                 s->dquant= clip(s->dquant, -2, 2); //FIXME RD
-            
-            if(s->codec_id==CODEC_ID_MPEG4){        
-                if(!s->mb_intra){
-                    if((s->mv_dir&MV_DIRECT) || s->mv_type==MV_TYPE_8X8)
-                        s->dquant=0;
+
+                if(s->codec_id==CODEC_ID_MPEG4){
+                    if(!s->mb_intra){
+                        if(s->pict_type == B_TYPE){
+                            if(s->dquant&1)
+                                s->dquant= (s->dquant/2)*2;
+                            if(s->mv_dir&MV_DIRECT)
+                                s->dquant= 0;
+                        }
+                        if(s->mv_type==MV_TYPE_8X8)
+                            s->dquant=0;
+                    }
                 }
             }
         }
         ff_set_qscale(s, last_qp + s->dquant);
-    }
+    }else if(s->flags&CODEC_FLAG_QP_RD)
+        ff_set_qscale(s, s->qscale + s->dquant);
 
     wrap_y = s->linesize;
     wrap_c = s->uvlinesize;
@@ -3334,9 +4261,13 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
     ptr_cr = s->new_picture.data[2] + (mb_y * 8 * wrap_c) + mb_x * 8;
 
     if(mb_x*16+16 > s->width || mb_y*16+16 > s->height){
-        ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, wrap_y, 16, 16, mb_x*16, mb_y*16, s->width, s->height);
-        ptr_y= s->edge_emu_buffer;
-        emu=1;
+        uint8_t *ebuf= s->edge_emu_buffer + 32;
+        ff_emulated_edge_mc(ebuf            , ptr_y , wrap_y,16,16,mb_x*16,mb_y*16, s->width   , s->height);
+        ptr_y= ebuf;
+        ff_emulated_edge_mc(ebuf+18*wrap_y  , ptr_cb, wrap_c, 8, 8, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
+        ptr_cb= ebuf+18*wrap_y;
+        ff_emulated_edge_mc(ebuf+18*wrap_y+8, ptr_cr, wrap_c, 8, 8, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
+        ptr_cr= ebuf+18*wrap_y+8;
     }
 
     if (s->mb_intra) {
@@ -3344,22 +4275,22 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
             int progressive_score, interlaced_score;
 
             s->interlaced_dct=0;
-            progressive_score= s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y, 8) 
+            progressive_score= s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y, 8)
                               +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y*8, NULL, wrap_y, 8) - 400;
 
             if(progressive_score > 0){
-                interlaced_score = s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y*2, 8) 
+                interlaced_score = s->dsp.ildct_cmp[4](s, ptr_y           , NULL, wrap_y*2, 8)
                                   +s->dsp.ildct_cmp[4](s, ptr_y + wrap_y  , NULL, wrap_y*2, 8);
                 if(progressive_score > interlaced_score){
                     s->interlaced_dct=1;
-            
+
                     dct_offset= wrap_y;
                     wrap_y<<=1;
                 }
             }
         }
-        
-       s->dsp.get_pixels(s->block[0], ptr_y                 , wrap_y);
+
+        s->dsp.get_pixels(s->block[0], ptr_y                 , wrap_y);
         s->dsp.get_pixels(s->block[1], ptr_y              + 8, wrap_y);
         s->dsp.get_pixels(s->block[2], ptr_y + dct_offset    , wrap_y);
         s->dsp.get_pixels(s->block[3], ptr_y + dct_offset + 8, wrap_y);
@@ -3368,13 +4299,7 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
             skip_dct[4]= 1;
             skip_dct[5]= 1;
         }else{
-            if(emu){ //FIXME move out of loop and fix edge_emu_buffer mess
-                ff_emulated_edge_mc(s->edge_emu_buffer, ptr_cb, wrap_c, 8, 8, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
-                ptr_cb= s->edge_emu_buffer;
-                ff_emulated_edge_mc(s->edge_emu_buffer+8, ptr_cr, wrap_c, 8, 8, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
-                ptr_cr= s->edge_emu_buffer+8;
-            }
-           s->dsp.get_pixels(s->block[4], ptr_cb, wrap_c);
+            s->dsp.get_pixels(s->block[4], ptr_cb, wrap_c);
             s->dsp.get_pixels(s->block[5], ptr_cr, wrap_c);
         }
     }else{
@@ -3387,7 +4312,7 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
         dest_cr = s->dest[2];
 
         if ((!s->no_rounding) || s->pict_type==B_TYPE){
-           op_pix = s->dsp.put_pixels_tab;
+            op_pix = s->dsp.put_pixels_tab;
             op_qpix= s->dsp.put_qpel_pixels_tab;
         }else{
             op_pix = s->dsp.put_no_rnd_pixels_tab;
@@ -3407,46 +4332,40 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
             int progressive_score, interlaced_score;
 
             s->interlaced_dct=0;
-            progressive_score= s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y, 8) 
+            progressive_score= s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y, 8)
                               +s->dsp.ildct_cmp[0](s, dest_y + wrap_y*8, ptr_y + wrap_y*8, wrap_y, 8) - 400;
-            
+
             if(s->avctx->ildct_cmp == FF_CMP_VSSE) progressive_score -= 400;
 
             if(progressive_score>0){
-                interlaced_score = s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y*2, 8) 
+                interlaced_score = s->dsp.ildct_cmp[0](s, dest_y           , ptr_y           , wrap_y*2, 8)
                                   +s->dsp.ildct_cmp[0](s, dest_y + wrap_y  , ptr_y + wrap_y  , wrap_y*2, 8);
-            
+
                 if(progressive_score > interlaced_score){
                     s->interlaced_dct=1;
-            
+
                     dct_offset= wrap_y;
                     wrap_y<<=1;
                 }
             }
         }
-        
-       s->dsp.diff_pixels(s->block[0], ptr_y                 , dest_y                 , wrap_y);
+
+        s->dsp.diff_pixels(s->block[0], ptr_y                 , dest_y                 , wrap_y);
         s->dsp.diff_pixels(s->block[1], ptr_y              + 8, dest_y              + 8, wrap_y);
         s->dsp.diff_pixels(s->block[2], ptr_y + dct_offset    , dest_y + dct_offset    , wrap_y);
         s->dsp.diff_pixels(s->block[3], ptr_y + dct_offset + 8, dest_y + dct_offset + 8, wrap_y);
-        
+
         if(s->flags&CODEC_FLAG_GRAY){
             skip_dct[4]= 1;
             skip_dct[5]= 1;
         }else{
-            if(emu){
-                ff_emulated_edge_mc(s->edge_emu_buffer, ptr_cb, wrap_c, 8, 8, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
-                ptr_cb= s->edge_emu_buffer;
-                ff_emulated_edge_mc(s->edge_emu_buffer+8, ptr_cr, wrap_c, 8, 8, mb_x*8, mb_y*8, s->width>>1, s->height>>1);
-                ptr_cr= s->edge_emu_buffer+8;
-            }
             s->dsp.diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
             s->dsp.diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
         }
-        /* pre quantization */         
+        /* pre quantization */
         if(s->current_picture.mc_mb_var[s->mb_stride*mb_y+ mb_x]<2*s->qscale*s->qscale){
             //FIXME optimize
-           if(s->dsp.sad[1](NULL, ptr_y               , dest_y               , wrap_y, 8) < 20*s->qscale) skip_dct[0]= 1;
+            if(s->dsp.sad[1](NULL, ptr_y               , dest_y               , wrap_y, 8) < 20*s->qscale) skip_dct[0]= 1;
             if(s->dsp.sad[1](NULL, ptr_y            + 8, dest_y            + 8, wrap_y, 8) < 20*s->qscale) skip_dct[1]= 1;
             if(s->dsp.sad[1](NULL, ptr_y +dct_offset   , dest_y +dct_offset   , wrap_y, 8) < 20*s->qscale) skip_dct[2]= 1;
             if(s->dsp.sad[1](NULL, ptr_y +dct_offset+ 8, dest_y +dct_offset+ 8, wrap_y, 8) < 20*s->qscale) skip_dct[3]= 1;
@@ -3464,7 +4383,7 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
         if(!skip_dct[5]) get_vissual_weight(weight[5], ptr_cr                , wrap_c);
         memcpy(orig[0], s->block[0], sizeof(DCTELEM)*64*6);
     }
-            
+
     /* DCT & quantize */
     assert(s->out_format!=FMT_MJPEG || s->qscale==8);
     {
@@ -3486,7 +4405,7 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
                 }
             }
         }
-        
+
         if(s->luma_elim_threshold && !s->mb_intra)
             for(i=0; i<4; i++)
                 dct_single_coeff_elimination(s, i, s->luma_elim_threshold);
@@ -3527,7 +4446,6 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
     case CODEC_ID_MPEG1VIDEO:
     case CODEC_ID_MPEG2VIDEO:
         mpeg1_encode_mb(s, s->block, motion_x, motion_y); break;
-#ifdef CONFIG_RISKY
     case CODEC_ID_MPEG4:
         mpeg4_encode_mb(s, s->block, motion_x, motion_y); break;
     case CODEC_ID_MSMPEG4V2:
@@ -3536,12 +4454,16 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
         msmpeg4_encode_mb(s, s->block, motion_x, motion_y); break;
     case CODEC_ID_WMV2:
          ff_wmv2_encode_mb(s, s->block, motion_x, motion_y); break;
+#ifdef CONFIG_H261_ENCODER
+    case CODEC_ID_H261:
+        ff_h261_encode_mb(s, s->block, motion_x, motion_y); break;
+#endif
     case CODEC_ID_H263:
     case CODEC_ID_H263P:
     case CODEC_ID_FLV1:
     case CODEC_ID_RV10:
+    case CODEC_ID_RV20:
         h263_encode_mb(s, s->block, motion_x, motion_y); break;
-#endif
     case CODEC_ID_MJPEG:
         mjpeg_encode_mb(s, s->block); break;
     default:
@@ -3551,97 +4473,54 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
 
 #endif //CONFIG_ENCODERS
 
-/**
- * combines the (truncated) bitstream to a complete frame
- * @returns -1 if no complete frame could be created
- */
-int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size){
-    ParseContext *pc= &s->parse_context;
-
-#if 0
-    if(pc->overread){
-        printf("overread %d, state:%X next:%d index:%d o_index:%d\n", pc->overread, pc->state, next, pc->index, pc->overread_index);
-        printf("%X %X %X %X\n", (*buf)[0], (*buf)[1],(*buf)[2],(*buf)[3]);
-    }
-#endif
-
-    /* copy overreaded byes from last frame into buffer */
-    for(; pc->overread>0; pc->overread--){
-        pc->buffer[pc->index++]= pc->buffer[pc->overread_index++];
-    }
-    
-    pc->last_index= pc->index;
+void ff_mpeg_flush(AVCodecContext *avctx){
+    int i;
+    MpegEncContext *s = avctx->priv_data;
 
-    /* copy into buffer end return */
-    if(next == END_NOT_FOUND){
-        pc->buffer= av_fast_realloc(pc->buffer, &pc->buffer_size, (*buf_size) + pc->index + FF_INPUT_BUFFER_PADDING_SIZE);
+    if(s==NULL || s->picture==NULL)
+        return;
 
-        memcpy(&pc->buffer[pc->index], *buf, *buf_size);
-        pc->index += *buf_size;
-        return -1;
+    for(i=0; i<MAX_PICTURE_COUNT; i++){
+       if(s->picture[i].data[0] && (   s->picture[i].type == FF_BUFFER_TYPE_INTERNAL
+                                    || s->picture[i].type == FF_BUFFER_TYPE_USER))
+        avctx->release_buffer(avctx, (AVFrame*)&s->picture[i]);
     }
+    s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
 
-    *buf_size=
-    pc->overread_index= pc->index + next;
-    
-    /* append to buffer */
-    if(pc->index){
-        pc->buffer= av_fast_realloc(pc->buffer, &pc->buffer_size, next + pc->index + FF_INPUT_BUFFER_PADDING_SIZE);
-
-        memcpy(&pc->buffer[pc->index], *buf, next + FF_INPUT_BUFFER_PADDING_SIZE );
-        pc->index = 0;
-        *buf= pc->buffer;
-    }
+    s->mb_x= s->mb_y= 0;
 
-    /* store overread bytes */
-    for(;next < 0; next++){
-        pc->state = (pc->state<<8) | pc->buffer[pc->last_index + next];
-        pc->overread++;
-    }
-
-#if 0
-    if(pc->overread){
-        printf("overread %d, state:%X next:%d index:%d o_index:%d\n", pc->overread, pc->state, next, pc->index, pc->overread_index);
-        printf("%X %X %X %X\n", (*buf)[0], (*buf)[1],(*buf)[2],(*buf)[3]);
-    }
-#endif
-
-    return 0;
-}
-
-void ff_mpeg_flush(AVCodecContext *avctx){
-    int i;
-    MpegEncContext *s = avctx->priv_data;
-    
-    if(s==NULL || s->picture==NULL) 
-        return;
-    
-    for(i=0; i<MAX_PICTURE_COUNT; i++){
-       if(s->picture[i].data[0] && (   s->picture[i].type == FF_BUFFER_TYPE_INTERNAL
-                                    || s->picture[i].type == FF_BUFFER_TYPE_USER))
-        avctx->release_buffer(avctx, (AVFrame*)&s->picture[i]);
-    }
-    s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
-    
     s->parse_context.state= -1;
     s->parse_context.frame_start_found= 0;
     s->parse_context.overread= 0;
     s->parse_context.overread_index= 0;
     s->parse_context.index= 0;
     s->parse_context.last_index= 0;
+    s->bitstream_buffer_size=0;
 }
 
 #ifdef CONFIG_ENCODERS
 void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length)
 {
-    int bytes= length>>4;
+    const uint16_t *srcw= (uint16_t*)src;
+    int words= length>>4;
     int bits= length&15;
     int i;
 
     if(length==0) return;
 
-    for(i=0; i<bytes; i++) put_bits(pb, 16, be2me_16(((uint16_t*)src)[i]));
-    put_bits(pb, bits, be2me_16(((uint16_t*)src)[i])>>(16-bits));
+    if(words < 16){
+        for(i=0; i<words; i++) put_bits(pb, 16, be2me_16(srcw[i]));
+    }else if(put_bits_count(pb)&7){
+        for(i=0; i<words; i++) put_bits(pb, 16, be2me_16(srcw[i]));
+    }else{
+        for(i=0; put_bits_count(pb)&31; i++)
+            put_bits(pb, 8, src[i]);
+        flush_put_bits(pb);
+        memcpy(pbBufPtr(pb), src+i, 2*words-i);
+        skip_put_bytes(pb, 2*words-i);
+    }
+
+    put_bits(pb, bits, be2me_16(srcw[words])>>(16-bits));
 }
 
 static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
@@ -3653,7 +4532,7 @@ static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext
     d->mb_skip_run= s->mb_skip_run;
     for(i=0; i<3; i++)
         d->last_dc[i]= s->last_dc[i];
-    
+
     /* statistics */
     d->mv_bits= s->mv_bits;
     d->i_tex_bits= s->i_tex_bits;
@@ -3665,7 +4544,7 @@ static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext
     d->misc_bits= s->misc_bits;
     d->last_bits= 0;
 
-    d->mb_skiped= 0;
+    d->mb_skipped= 0;
     d->qscale= s->qscale;
     d->dquant= s->dquant;
 }
@@ -3673,14 +4552,14 @@ static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext
 static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type){
     int i;
 
-    memcpy(d->mv, s->mv, 2*4*2*sizeof(int)); 
+    memcpy(d->mv, s->mv, 2*4*2*sizeof(int));
     memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
-    
+
     /* mpeg1 */
     d->mb_skip_run= s->mb_skip_run;
     for(i=0; i<3; i++)
         d->last_dc[i]= s->last_dc[i];
-    
+
     /* statistics */
     d->mv_bits= s->mv_bits;
     d->i_tex_bits= s->i_tex_bits;
@@ -3692,7 +4571,7 @@ static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *
     d->misc_bits= s->misc_bits;
 
     d->mb_intra= s->mb_intra;
-    d->mb_skiped= s->mb_skiped;
+    d->mb_skipped= s->mb_skipped;
     d->mv_type= s->mv_type;
     d->mv_dir= s->mv_dir;
     d->pb= s->pb;
@@ -3707,13 +4586,13 @@ static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *
     d->qscale= s->qscale;
 }
 
-static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type, 
+static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type,
                            PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2],
                            int *dmin, int *next_block, int motion_x, int motion_y)
 {
     int score;
     uint8_t *dest_backup[3];
-    
+
     copy_context_before_encode(s, backup, type);
 
     s->block= s->blocks[*next_block];
@@ -3722,31 +4601,30 @@ static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegE
         s->pb2   = pb2   [*next_block];
         s->tex_pb= tex_pb[*next_block];
     }
-    
+
     if(*next_block){
         memcpy(dest_backup, s->dest, sizeof(s->dest));
-        s->dest[0] = s->me.scratchpad;
-        s->dest[1] = s->me.scratchpad + 16;
-        s->dest[2] = s->me.scratchpad + 16 + 8;
-        assert(2*s->uvlinesize == s->linesize); //should be no prob for encoding
-        assert(s->linesize >= 64); //FIXME
+        s->dest[0] = s->rd_scratchpad;
+        s->dest[1] = s->rd_scratchpad + 16*s->linesize;
+        s->dest[2] = s->rd_scratchpad + 16*s->linesize + 8;
+        assert(s->linesize >= 32); //FIXME
     }
 
     encode_mb(s, motion_x, motion_y);
-    
+
     score= put_bits_count(&s->pb);
     if(s->data_partitioning){
         score+= put_bits_count(&s->pb2);
         score+= put_bits_count(&s->tex_pb);
     }
-   
+
     if(s->avctx->mb_decision == FF_MB_DECISION_RD){
         MPV_decode_mb(s, s->block);
 
         score *= s->lambda2;
         score += sse_mb(s) << FF_LAMBDA_SHIFT;
     }
-    
+
     if(*next_block){
         memcpy(s->dest, dest_backup, sizeof(s->dest));
     }
@@ -3758,25 +4636,25 @@ static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegE
         copy_context_after_encode(best, s, type);
     }
 }
-                
+
 static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride){
     uint32_t *sq = squareTbl + 256;
     int acc=0;
     int x,y;
-    
-    if(w==16 && h==16) 
+
+    if(w==16 && h==16)
         return s->dsp.sse[0](NULL, src1, src2, stride, 16);
     else if(w==8 && h==8)
         return s->dsp.sse[1](NULL, src1, src2, stride, 8);
-    
+
     for(y=0; y<h; y++){
         for(x=0; x<w; x++){
             acc+= sq[src1[x + y*stride] - src2[x + y*stride]];
-        } 
+        }
     }
-    
+
     assert(acc>=0);
-    
+
     return acc;
 }
 
@@ -3788,262 +4666,123 @@ static int sse_mb(MpegEncContext *s){
     if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
 
     if(w==16 && h==16)
+      if(s->avctx->mb_cmp == FF_CMP_NSSE){
+        return  s->dsp.nsse[0](s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], s->linesize, 16)
+               +s->dsp.nsse[1](s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], s->uvlinesize, 8)
+               +s->dsp.nsse[1](s, s->new_picture.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], s->uvlinesize, 8);
+      }else{
         return  s->dsp.sse[0](NULL, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], s->linesize, 16)
                +s->dsp.sse[1](NULL, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], s->uvlinesize, 8)
                +s->dsp.sse[1](NULL, s->new_picture.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], s->uvlinesize, 8);
+      }
     else
         return  sse(s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], w, h, s->linesize)
                +sse(s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], w>>1, h>>1, s->uvlinesize)
                +sse(s, s->new_picture.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], w>>1, h>>1, s->uvlinesize);
 }
 
-static void encode_picture(MpegEncContext *s, int picture_number)
-{
-    int mb_x, mb_y, pdif = 0;
-    int i, j;
-    int bits;
-    MpegEncContext best_s, backup_s;
-    uint8_t bit_buf[2][3000];
-    uint8_t bit_buf2[2][3000];
-    uint8_t bit_buf_tex[2][3000];
-    PutBitContext pb[2], pb2[2], tex_pb[2];
-
-    for(i=0; i<2; i++){
-        init_put_bits(&pb    [i], bit_buf    [i], 3000);
-        init_put_bits(&pb2   [i], bit_buf2   [i], 3000);
-        init_put_bits(&tex_pb[i], bit_buf_tex[i], 3000);
-    }
-
-    s->picture_number = picture_number;
-    
-    /* Reset the average MB variance */
-    s->current_picture.mb_var_sum = 0;
-    s->current_picture.mc_mb_var_sum = 0;
+static int pre_estimate_motion_thread(AVCodecContext *c, void *arg){
+    MpegEncContext *s= arg;
 
-#ifdef CONFIG_RISKY
-    /* we need to initialize some time vars before we can encode b-frames */
-    // RAL: Condition added for MPEG1VIDEO
-    if (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO || (s->h263_pred && !s->h263_msmpeg4))
-        ff_set_mpeg4_time(s, s->picture_number); 
-#endif
-        
-    s->scene_change_score=0;
-    
-    s->lambda= s->current_picture_ptr->quality; //FIXME qscale / ... stuff for ME ratedistoration
-    
-    if(s->pict_type==I_TYPE){
-        if(s->msmpeg4_version >= 3) s->no_rounding=1;
-        else                        s->no_rounding=0;
-    }else if(s->pict_type!=B_TYPE){
-        if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
-            s->no_rounding ^= 1;          
-    }
-    
-    /* Estimate motion for every MB */
-    s->mb_intra=0; //for the rate distoration & bit compare functions
-    if(s->pict_type != I_TYPE){
-        if(s->pict_type != B_TYPE){
-            if((s->avctx->pre_me && s->last_non_b_pict_type==I_TYPE) || s->avctx->pre_me==2){
-                s->me.pre_pass=1;
-                s->me.dia_size= s->avctx->pre_dia_size;
-
-                for(mb_y=s->mb_height-1; mb_y >=0 ; mb_y--) {
-                    s->mb_y = mb_y;
-                    for(mb_x=s->mb_width-1; mb_x >=0 ; mb_x--) {
-                        s->mb_x = mb_x;
-                        ff_pre_estimate_p_frame_motion(s, mb_x, mb_y);
-                    }
-                }
-                s->me.pre_pass=0;
-            }
-        }
 
-        s->me.dia_size= s->avctx->dia_size;
-        for(mb_y=0; mb_y < s->mb_height; mb_y++) {
-            s->mb_y = mb_y;
-            s->block_index[0]= s->block_wrap[0]*(mb_y*2 + 1) - 1;
-            s->block_index[1]= s->block_wrap[0]*(mb_y*2 + 1);
-            s->block_index[2]= s->block_wrap[0]*(mb_y*2 + 2) - 1;
-            s->block_index[3]= s->block_wrap[0]*(mb_y*2 + 2);
-            for(mb_x=0; mb_x < s->mb_width; mb_x++) {
-                s->mb_x = mb_x;
-                s->block_index[0]+=2;
-                s->block_index[1]+=2;
-                s->block_index[2]+=2;
-                s->block_index[3]+=2;
-                
-                /* compute motion vector & mb_type and store in context */
-                if(s->pict_type==B_TYPE)
-                    ff_estimate_b_frame_motion(s, mb_x, mb_y);
-                else
-                    ff_estimate_p_frame_motion(s, mb_x, mb_y);
-            }
-        }
-    }else /* if(s->pict_type == I_TYPE) */{
-        /* I-Frame */
-        for(i=0; i<s->mb_stride*s->mb_height; i++)
-            s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
-        
-        if(!s->fixed_qscale){
-            /* finding spatial complexity for I-frame rate control */
-            for(mb_y=0; mb_y < s->mb_height; mb_y++) {
-                for(mb_x=0; mb_x < s->mb_width; mb_x++) {
-                    int xx = mb_x * 16;
-                    int yy = mb_y * 16;
-                    uint8_t *pix = s->new_picture.data[0] + (yy * s->linesize) + xx;
-                    int varc;
-                   int sum = s->dsp.pix_sum(pix, s->linesize);
-    
-                   varc = (s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)(sum*sum))>>8) + 500 + 128)>>8;
-
-                    s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
-                    s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
-                    s->current_picture.mb_var_sum    += varc;
-                }
-            }
+    s->me.pre_pass=1;
+    s->me.dia_size= s->avctx->pre_dia_size;
+    s->first_slice_line=1;
+    for(s->mb_y= s->end_mb_y-1; s->mb_y >= s->start_mb_y; s->mb_y--) {
+        for(s->mb_x=s->mb_width-1; s->mb_x >=0 ;s->mb_x--) {
+            ff_pre_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
         }
+        s->first_slice_line=0;
     }
-    emms_c();
 
-    if(s->scene_change_score > s->avctx->scenechange_threshold && s->pict_type == P_TYPE){
-        s->pict_type= I_TYPE;
-        for(i=0; i<s->mb_stride*s->mb_height; i++)
-            s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
-//printf("Scene change detected, encoding as I Frame %d %d\n", s->current_picture.mb_var_sum, s->current_picture.mc_mb_var_sum);
-    }
+    s->me.pre_pass=0;
 
-    if(!s->umvplus){
-        if(s->pict_type==P_TYPE || s->pict_type==S_TYPE) {
-            s->f_code= ff_get_best_fcode(s, s->p_mv_table, CANDIDATE_MB_TYPE_INTER);
+    return 0;
+}
 
-            if(s->flags & CODEC_FLAG_INTERLACED_ME){
-                int a,b;
-                a= ff_get_best_fcode(s, s->p_field_mv_table[0][0], CANDIDATE_MB_TYPE_INTER_I); //FIXME field_select
-                b= ff_get_best_fcode(s, s->p_field_mv_table[1][1], CANDIDATE_MB_TYPE_INTER_I);
-                s->f_code= FFMAX(s->f_code, FFMAX(a,b));
-            }
-                    
-            ff_fix_long_p_mvs(s);
-            ff_fix_long_mvs(s, NULL, 0, s->p_mv_table, s->f_code, CANDIDATE_MB_TYPE_INTER, 0);
-            if(s->flags & CODEC_FLAG_INTERLACED_ME){
-                for(i=0; i<2; i++){
-                    for(j=0; j<2; j++)
-                        ff_fix_long_mvs(s, s->p_field_select_table[i], j, 
-                                        s->p_field_mv_table[i][j], s->f_code, CANDIDATE_MB_TYPE_INTER_I, 0);
-                }
-            }
+static int estimate_motion_thread(AVCodecContext *c, void *arg){
+    MpegEncContext *s= arg;
+
+    s->me.dia_size= s->avctx->dia_size;
+    s->first_slice_line=1;
+    for(s->mb_y= s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
+        s->mb_x=0; //for block init below
+        ff_init_block_index(s);
+        for(s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {
+            s->block_index[0]+=2;
+            s->block_index[1]+=2;
+            s->block_index[2]+=2;
+            s->block_index[3]+=2;
+
+            /* compute motion vector & mb_type and store in context */
+            if(s->pict_type==B_TYPE)
+                ff_estimate_b_frame_motion(s, s->mb_x, s->mb_y);
+            else
+                ff_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
         }
+        s->first_slice_line=0;
+    }
+    return 0;
+}
 
-        if(s->pict_type==B_TYPE){
-            int a, b;
+static int mb_var_thread(AVCodecContext *c, void *arg){
+    MpegEncContext *s= arg;
+    int mb_x, mb_y;
 
-            a = ff_get_best_fcode(s, s->b_forw_mv_table, CANDIDATE_MB_TYPE_FORWARD);
-            b = ff_get_best_fcode(s, s->b_bidir_forw_mv_table, CANDIDATE_MB_TYPE_BIDIR);
-            s->f_code = FFMAX(a, b);
+    for(mb_y=s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
+        for(mb_x=0; mb_x < s->mb_width; mb_x++) {
+            int xx = mb_x * 16;
+            int yy = mb_y * 16;
+            uint8_t *pix = s->new_picture.data[0] + (yy * s->linesize) + xx;
+            int varc;
+            int sum = s->dsp.pix_sum(pix, s->linesize);
 
-            a = ff_get_best_fcode(s, s->b_back_mv_table, CANDIDATE_MB_TYPE_BACKWARD);
-            b = ff_get_best_fcode(s, s->b_bidir_back_mv_table, CANDIDATE_MB_TYPE_BIDIR);
-            s->b_code = FFMAX(a, b);
+            varc = (s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)(sum*sum))>>8) + 500 + 128)>>8;
 
-            ff_fix_long_mvs(s, NULL, 0, s->b_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_FORWARD, 1);
-            ff_fix_long_mvs(s, NULL, 0, s->b_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BACKWARD, 1);
-            ff_fix_long_mvs(s, NULL, 0, s->b_bidir_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_BIDIR, 1);
-            ff_fix_long_mvs(s, NULL, 0, s->b_bidir_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BIDIR, 1);
-            if(s->flags & CODEC_FLAG_INTERLACED_ME){
-                int dir;
-                for(dir=0; dir<2; dir++){
-                    for(i=0; i<2; i++){
-                        for(j=0; j<2; j++){
-                            int type= dir ? (CANDIDATE_MB_TYPE_BACKWARD_I|CANDIDATE_MB_TYPE_BIDIR_I) 
-                                          : (CANDIDATE_MB_TYPE_FORWARD_I |CANDIDATE_MB_TYPE_BIDIR_I);
-                            ff_fix_long_mvs(s, s->b_field_select_table[dir][i], j, 
-                                            s->b_field_mv_table[dir][i][j], dir ? s->b_code : s->f_code, type, 1);
-                        }
-                    }
-                }
-            }
+            s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
+            s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
+            s->me.mb_var_sum_temp    += varc;
         }
     }
-    
-    if (!s->fixed_qscale) 
-        s->current_picture.quality = ff_rate_estimate_qscale(s);
+    return 0;
+}
 
-    if(s->adaptive_quant){
-#ifdef CONFIG_RISKY
-        switch(s->codec_id){
-        case CODEC_ID_MPEG4:
-            ff_clean_mpeg4_qscales(s);
-            break;
-        case CODEC_ID_H263:
-        case CODEC_ID_H263P:
-        case CODEC_ID_FLV1:
-            ff_clean_h263_qscales(s);
-            break;
+static void write_slice_end(MpegEncContext *s){
+    if(s->codec_id==CODEC_ID_MPEG4){
+        if(s->partitioned_frame){
+            ff_mpeg4_merge_partitions(s);
         }
-#endif
-
-        s->lambda= s->lambda_table[0];
-        //FIXME broken
-    }else
-        s->lambda= s->current_picture.quality;
-//printf("%d %d\n", s->avctx->global_quality, s->current_picture.quality);
-    update_qscale(s);
-    
-    if(s->qscale < 3 && s->max_qcoeff<=128 && s->pict_type==I_TYPE && !(s->flags & CODEC_FLAG_QSCALE)) 
-        s->qscale= 3; //reduce cliping problems
-        
-    if (s->out_format == FMT_MJPEG) {
-        /* for mjpeg, we do include qscale in the matrix */
-        s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0];
-        for(i=1;i<64;i++){
-            int j= s->dsp.idct_permutation[i];
 
-            s->intra_matrix[j] = CLAMP_TO_8BIT((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3);
-        }
-        convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16, 
-                       s->intra_matrix, s->intra_quant_bias, 8, 8);
-        s->qscale= 8;
+        ff_mpeg4_stuffing(&s->pb);
+    }else if(s->out_format == FMT_MJPEG){
+        ff_mjpeg_stuffing(&s->pb);
     }
-    
-    //FIXME var duplication
-    s->current_picture.key_frame= s->pict_type == I_TYPE;
-    s->current_picture.pict_type= s->pict_type;
 
-    if(s->current_picture.key_frame)
-        s->picture_in_gop_number=0;
+    align_put_bits(&s->pb);
+    flush_put_bits(&s->pb);
 
-    s->last_bits= put_bits_count(&s->pb);
-    switch(s->out_format) {
-    case FMT_MJPEG:
-        mjpeg_picture_header(s);
-        break;
-#ifdef CONFIG_RISKY
-    case FMT_H263:
-        if (s->codec_id == CODEC_ID_WMV2) 
-            ff_wmv2_encode_picture_header(s, picture_number);
-        else if (s->h263_msmpeg4) 
-            msmpeg4_encode_picture_header(s, picture_number);
-        else if (s->h263_pred)
-            mpeg4_encode_picture_header(s, picture_number);
-        else if (s->codec_id == CODEC_ID_RV10) 
-            rv10_encode_picture_header(s, picture_number);
-        else if (s->codec_id == CODEC_ID_FLV1)
-            ff_flv_encode_picture_header(s, picture_number);
-        else
-            h263_encode_picture_header(s, picture_number);
-        break;
-#endif
-    case FMT_MPEG1:
-        mpeg1_encode_picture_header(s, picture_number);
-        break;
-    case FMT_H264:
-        break;
-    default:
-        assert(0);
+    if((s->flags&CODEC_FLAG_PASS1) && !s->partitioned_frame)
+        s->misc_bits+= get_bits_diff(s);
+}
+
+static int encode_thread(AVCodecContext *c, void *arg){
+    MpegEncContext *s= arg;
+    int mb_x, mb_y, pdif = 0;
+    int i, j;
+    MpegEncContext best_s, backup_s;
+    uint8_t bit_buf[2][MAX_MB_BYTES];
+    uint8_t bit_buf2[2][MAX_MB_BYTES];
+    uint8_t bit_buf_tex[2][MAX_MB_BYTES];
+    PutBitContext pb[2], pb2[2], tex_pb[2];
+//printf("%d->%d\n", s->resync_mb_y, s->end_mb_y);
+
+    for(i=0; i<2; i++){
+        init_put_bits(&pb    [i], bit_buf    [i], MAX_MB_BYTES);
+        init_put_bits(&pb2   [i], bit_buf2   [i], MAX_MB_BYTES);
+        init_put_bits(&tex_pb[i], bit_buf_tex[i], MAX_MB_BYTES);
     }
-    bits= put_bits_count(&s->pb);
-    s->header_bits= bits - s->last_bits;
-    s->last_bits= bits;
+
+    s->last_bits= put_bits_count(&s->pb);
     s->mv_bits=0;
     s->misc_bits=0;
     s->i_tex_bits=0;
@@ -4056,16 +4795,15 @@ static void encode_picture(MpegEncContext *s, int picture_number)
     for(i=0; i<3; i++){
         /* init last dc values */
         /* note: quant matrix value (8) is implied here */
-        s->last_dc[i] = 128;
-        
-        s->current_picture_ptr->error[i] = 0;
+        s->last_dc[i] = 128 << s->intra_dc_precision;
+
+        s->current_picture.error[i] = 0;
     }
     s->mb_skip_run = 0;
     memset(s->last_mv, 0, sizeof(s->last_mv));
-     
+
     s->last_mv_dir = 0;
 
-#ifdef CONFIG_RISKY
     switch(s->codec_id){
     case CODEC_ID_H263:
     case CODEC_ID_H263P:
@@ -4077,38 +4815,60 @@ static void encode_picture(MpegEncContext *s, int picture_number)
             ff_mpeg4_init_partitions(s);
         break;
     }
-#endif
 
     s->resync_mb_x=0;
     s->resync_mb_y=0;
     s->first_slice_line = 1;
     s->ptr_lastgob = s->pb.buf;
-    for(mb_y=0; mb_y < s->mb_height; mb_y++) {
+    for(mb_y= s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
+//    printf("row %d at %X\n", s->mb_y, (int)s);
         s->mb_x=0;
         s->mb_y= mb_y;
 
         ff_set_qscale(s, s->qscale);
         ff_init_block_index(s);
-        
+
         for(mb_x=0; mb_x < s->mb_width; mb_x++) {
-            const int xy= mb_y*s->mb_stride + mb_x;
+            int xy= mb_y*s->mb_stride + mb_x; // removed const, H261 needs to adjust this
             int mb_type= s->mb_type[xy];
 //            int d;
             int dmin= INT_MAX;
             int dir;
 
+            if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < MAX_MB_BYTES){
+                av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
+                return -1;
+            }
+            if(s->data_partitioning){
+                if(   s->pb2   .buf_end - s->pb2   .buf - (put_bits_count(&s->    pb2)>>3) < MAX_MB_BYTES
+                   || s->tex_pb.buf_end - s->tex_pb.buf - (put_bits_count(&s->tex_pb )>>3) < MAX_MB_BYTES){
+                    av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
+                    return -1;
+                }
+            }
+
             s->mb_x = mb_x;
+            s->mb_y = mb_y;  // moved into loop, can get changed by H.261
             ff_update_block_index(s);
 
+#ifdef CONFIG_H261_ENCODER
+            if(s->codec_id == CODEC_ID_H261){
+                ff_h261_reorder_mb_index(s);
+                xy= s->mb_y*s->mb_stride + s->mb_x;
+                mb_type= s->mb_type[xy];
+            }
+#endif
+
             /* write gob / video packet header  */
-#ifdef CONFIG_RISKY
             if(s->rtp_mode){
                 int current_packet_size, is_gob_start;
-                
-                current_packet_size= pbBufPtr(&s->pb) - s->ptr_lastgob;
-                
-                is_gob_start= s->avctx->rtp_payload_size && current_packet_size >= s->avctx->rtp_payload_size && mb_y + mb_x>0; 
-                
+
+                current_packet_size= ((put_bits_count(&s->pb)+7)>>3) - (s->ptr_lastgob - s->pb.buf);
+
+                is_gob_start= s->avctx->rtp_payload_size && current_packet_size >= s->avctx->rtp_payload_size && mb_y + mb_x>0;
+
+                if(s->start_mb_y == mb_y && mb_y > 0 && mb_x==0) is_gob_start=1;
+
                 switch(s->codec_id){
                 case CODEC_ID_H263:
                 case CODEC_ID_H263P:
@@ -4121,24 +4881,21 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                     if(s->mb_skip_run) is_gob_start=0;
                     break;
                 }
-                
+
                 if(is_gob_start){
-                    if(s->codec_id==CODEC_ID_MPEG4 && s->partitioned_frame){
-                        ff_mpeg4_merge_partitions(s);
-                        ff_mpeg4_init_partitions(s);
-                    }
-                
-                    if(s->codec_id==CODEC_ID_MPEG4) 
-                        ff_mpeg4_stuffing(&s->pb);
+                    if(s->start_mb_y != mb_y || mb_x!=0){
+                        write_slice_end(s);
 
-                    align_put_bits(&s->pb);
-                    flush_put_bits(&s->pb);
+                        if(s->codec_id==CODEC_ID_MPEG4 && s->partitioned_frame){
+                            ff_mpeg4_init_partitions(s);
+                        }
+                    }
 
                     assert((put_bits_count(&s->pb)&7) == 0);
                     current_packet_size= pbBufPtr(&s->pb) - s->ptr_lastgob;
-                    
+
                     if(s->avctx->error_rate && s->resync_mb_x + s->resync_mb_y > 0){
-                        int r= put_bits_count(&s->pb)/8 + s->picture_number + s->codec_id + s->mb_x + s->mb_y;
+                        int r= put_bits_count(&s->pb)/8 + s->picture_number + 16 + s->mb_x + s->mb_y;
                         int d= 100 / s->avctx->error_rate;
                         if(r % d == 0){
                             current_packet_size=0;
@@ -4148,10 +4905,12 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                             assert(pbBufPtr(&s->pb) == s->ptr_lastgob);
                         }
                     }
-        
-                    if (s->avctx->rtp_callback)
-                        s->avctx->rtp_callback(s->ptr_lastgob, current_packet_size, 0);
-                    
+
+                    if (s->avctx->rtp_callback){
+                        int number_mb = (mb_y - s->resync_mb_y)*s->mb_width + mb_x - s->resync_mb_x;
+                        s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, current_packet_size, number_mb);
+                    }
+
                     switch(s->codec_id){
                     case CODEC_ID_MPEG4:
                         ff_mpeg4_encode_video_packet_header(s);
@@ -4164,7 +4923,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                     break;
                     case CODEC_ID_H263:
                     case CODEC_ID_H263P:
-                        h263_encode_gob_header(s, mb_y);                       
+                        h263_encode_gob_header(s, mb_y);
                     break;
                     }
 
@@ -4173,24 +4932,23 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                         s->misc_bits+= bits - s->last_bits;
                         s->last_bits= bits;
                     }
-    
+
                     s->ptr_lastgob += current_packet_size;
                     s->first_slice_line=1;
                     s->resync_mb_x=mb_x;
                     s->resync_mb_y=mb_y;
                 }
             }
-#endif
 
             if(  (s->resync_mb_x   == s->mb_x)
                && s->resync_mb_y+1 == s->mb_y){
-                s->first_slice_line=0; 
+                s->first_slice_line=0;
             }
 
-            s->mb_skiped=0;
+            s->mb_skipped=0;
             s->dquant=0; //only for QP_RD
 
-            if(mb_type & (mb_type-1) || (s->flags & CODEC_FLAG_QP_RD)){ // more than 1 MB type possible
+            if(mb_type & (mb_type-1) || (s->flags & CODEC_FLAG_QP_RD)){ // more than 1 MB type possible or CODEC_FLAG_QP_RD
                 int next_block=0;
                 int pb_bits_count, pb2_bits_count, tex_pb_bits_count;
 
@@ -4209,10 +4967,10 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                     s->mb_intra= 0;
                     s->mv[0][0][0] = s->p_mv_table[xy][0];
                     s->mv[0][0][1] = s->p_mv_table[xy][1];
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER, pb, pb2, tex_pb,
                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
                 }
-                if(mb_type&CANDIDATE_MB_TYPE_INTER_I){ 
+                if(mb_type&CANDIDATE_MB_TYPE_INTER_I){
                     s->mv_dir = MV_DIR_FORWARD;
                     s->mv_type = MV_TYPE_FIELD;
                     s->mb_intra= 0;
@@ -4221,19 +4979,19 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                         s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
                         s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
                     }
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER_I, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER_I, pb, pb2, tex_pb,
                                  &dmin, &next_block, 0, 0);
                 }
-                if(mb_type&CANDIDATE_MB_TYPE_SKIPED){
+                if(mb_type&CANDIDATE_MB_TYPE_SKIPPED){
                     s->mv_dir = MV_DIR_FORWARD;
                     s->mv_type = MV_TYPE_16X16;
                     s->mb_intra= 0;
                     s->mv[0][0][0] = 0;
                     s->mv[0][0][1] = 0;
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_SKIPED, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_SKIPPED, pb, pb2, tex_pb,
                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
                 }
-                if(mb_type&CANDIDATE_MB_TYPE_INTER4V){                 
+                if(mb_type&CANDIDATE_MB_TYPE_INTER4V){
                     s->mv_dir = MV_DIR_FORWARD;
                     s->mv_type = MV_TYPE_8X8;
                     s->mb_intra= 0;
@@ -4241,7 +4999,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                         s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
                         s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
                     }
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER4V, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER4V, pb, pb2, tex_pb,
                                  &dmin, &next_block, 0, 0);
                 }
                 if(mb_type&CANDIDATE_MB_TYPE_FORWARD){
@@ -4250,7 +5008,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                     s->mb_intra= 0;
                     s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
                     s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD, pb, pb2, tex_pb,
                                  &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
                 }
                 if(mb_type&CANDIDATE_MB_TYPE_BACKWARD){
@@ -4259,7 +5017,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                     s->mb_intra= 0;
                     s->mv[1][0][0] = s->b_back_mv_table[xy][0];
                     s->mv[1][0][1] = s->b_back_mv_table[xy][1];
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD, pb, pb2, tex_pb,
                                  &dmin, &next_block, s->mv[1][0][0], s->mv[1][0][1]);
                 }
                 if(mb_type&CANDIDATE_MB_TYPE_BIDIR){
@@ -4270,22 +5028,20 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                     s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
                     s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
                     s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR, pb, pb2, tex_pb,
                                  &dmin, &next_block, 0, 0);
                 }
                 if(mb_type&CANDIDATE_MB_TYPE_DIRECT){
                     int mx= s->b_direct_mv_table[xy][0];
                     int my= s->b_direct_mv_table[xy][1];
-                    
+
                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
                     s->mb_intra= 0;
-#ifdef CONFIG_RISKY
                     ff_mpeg4_set_direct_mv(s, mx, my);
-#endif
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
                                  &dmin, &next_block, mx, my);
                 }
-                if(mb_type&CANDIDATE_MB_TYPE_FORWARD_I){ 
+                if(mb_type&CANDIDATE_MB_TYPE_FORWARD_I){
                     s->mv_dir = MV_DIR_FORWARD;
                     s->mv_type = MV_TYPE_FIELD;
                     s->mb_intra= 0;
@@ -4294,10 +5050,10 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                         s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
                         s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
                     }
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD_I, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD_I, pb, pb2, tex_pb,
                                  &dmin, &next_block, 0, 0);
                 }
-                if(mb_type&CANDIDATE_MB_TYPE_BACKWARD_I){ 
+                if(mb_type&CANDIDATE_MB_TYPE_BACKWARD_I){
                     s->mv_dir = MV_DIR_BACKWARD;
                     s->mv_type = MV_TYPE_FIELD;
                     s->mb_intra= 0;
@@ -4306,10 +5062,10 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                         s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
                         s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
                     }
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD_I, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD_I, pb, pb2, tex_pb,
                                  &dmin, &next_block, 0, 0);
                 }
-                if(mb_type&CANDIDATE_MB_TYPE_BIDIR_I){ 
+                if(mb_type&CANDIDATE_MB_TYPE_BIDIR_I){
                     s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
                     s->mv_type = MV_TYPE_FIELD;
                     s->mb_intra= 0;
@@ -4320,7 +5076,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                             s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
                         }
                     }
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR_I, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR_I, pb, pb2, tex_pb,
                                  &dmin, &next_block, 0, 0);
                 }
                 if(mb_type&CANDIDATE_MB_TYPE_INTRA){
@@ -4329,7 +5085,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                     s->mb_intra= 1;
                     s->mv[0][0][0] = 0;
                     s->mv[0][0][1] = 0;
-                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTRA, pb, pb2, tex_pb, 
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTRA, pb, pb2, tex_pb,
                                  &dmin, &next_block, 0, 0);
                     if(s->h263_pred || s->h263_aic){
                         if(best_s.mb_intra)
@@ -4345,7 +5101,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                         int dquant, dir, qp, dc[6];
                         DCTELEM ac[6][16];
                         const int mvdir= (best_s.mv_dir&MV_DIR_BACKWARD) ? 1 : 0;
-                        
+
                         assert(backup_s.dquant == 0);
 
                         //FIXME intra
@@ -4356,7 +5112,7 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                         s->mv[0][0][1] = best_s.mv[0][0][1];
                         s->mv[1][0][0] = best_s.mv[1][0][0];
                         s->mv[1][0][1] = best_s.mv[1][0][1];
-                        
+
                         dir= s->pict_type == B_TYPE ? 2 : 1;
                         if(last_qp + dir > s->avctx->qmax) dir= -dir;
                         for(dquant= dir; dquant<=2 && dquant>=-2; dquant += dir){
@@ -4364,17 +5120,17 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                             if(qp < s->avctx->qmin || qp > s->avctx->qmax)
                                 break;
                             backup_s.dquant= dquant;
-                            if(s->mb_intra){
+                            if(s->mb_intra && s->dc_val[0]){
                                 for(i=0; i<6; i++){
                                     dc[i]= s->dc_val[0][ s->block_index[i] ];
                                     memcpy(ac[i], s->ac_val[0][s->block_index[i]], sizeof(DCTELEM)*16);
                                 }
                             }
 
-                            encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb, 
+                            encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
                                          &dmin, &next_block, s->mv[mvdir][0][0], s->mv[mvdir][0][1]);
                             if(best_s.qscale != qp){
-                                if(s->mb_intra){
+                                if(s->mb_intra && s->dc_val[0]){
                                     for(i=0; i<6; i++){
                                         s->dc_val[0][ s->block_index[i] ]= dc[i];
                                         memcpy(s->ac_val[0][s->block_index[i]], ac[i], sizeof(DCTELEM)*16);
@@ -4393,210 +5149,480 @@ static void encode_picture(MpegEncContext *s, int picture_number)
                 }
 
                 copy_context_after_encode(s, &best_s, -1);
-                
+
                 pb_bits_count= put_bits_count(&s->pb);
                 flush_put_bits(&s->pb);
                 ff_copy_bits(&backup_s.pb, bit_buf[next_block^1], pb_bits_count);
                 s->pb= backup_s.pb;
-                
+
                 if(s->data_partitioning){
                     pb2_bits_count= put_bits_count(&s->pb2);
                     flush_put_bits(&s->pb2);
                     ff_copy_bits(&backup_s.pb2, bit_buf2[next_block^1], pb2_bits_count);
                     s->pb2= backup_s.pb2;
-                    
+
                     tex_pb_bits_count= put_bits_count(&s->tex_pb);
                     flush_put_bits(&s->tex_pb);
                     ff_copy_bits(&backup_s.tex_pb, bit_buf_tex[next_block^1], tex_pb_bits_count);
                     s->tex_pb= backup_s.tex_pb;
                 }
                 s->last_bits= put_bits_count(&s->pb);
-               
-#ifdef CONFIG_RISKY
+
                 if (s->out_format == FMT_H263 && s->pict_type!=B_TYPE)
                     ff_h263_update_motion_val(s);
-#endif
-        
-                if(next_block==0){
-                    s->dsp.put_pixels_tab[0][0](s->dest[0], s->me.scratchpad     , s->linesize  ,16);
-                    s->dsp.put_pixels_tab[1][0](s->dest[1], s->me.scratchpad + 16, s->uvlinesize, 8);
-                    s->dsp.put_pixels_tab[1][0](s->dest[2], s->me.scratchpad + 24, s->uvlinesize, 8);
+
+                if(next_block==0){ //FIXME 16 vs linesize16
+                    s->dsp.put_pixels_tab[0][0](s->dest[0], s->rd_scratchpad                     , s->linesize  ,16);
+                    s->dsp.put_pixels_tab[1][0](s->dest[1], s->rd_scratchpad + 16*s->linesize    , s->uvlinesize, 8);
+                    s->dsp.put_pixels_tab[1][0](s->dest[2], s->rd_scratchpad + 16*s->linesize + 8, s->uvlinesize, 8);
                 }
 
-                if(s->avctx->mb_decision == FF_MB_DECISION_BITS)
-                    MPV_decode_mb(s, s->block);
-            } else {
-                int motion_x, motion_y;
-                s->mv_type=MV_TYPE_16X16;
-                // only one MB-Type possible
-                
-                switch(mb_type){
-                case CANDIDATE_MB_TYPE_INTRA:
-                    s->mv_dir = 0;
-                    s->mb_intra= 1;
-                    motion_x= s->mv[0][0][0] = 0;
-                    motion_y= s->mv[0][0][1] = 0;
-                    break;
-                case CANDIDATE_MB_TYPE_INTER:
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mb_intra= 0;
-                    motion_x= s->mv[0][0][0] = s->p_mv_table[xy][0];
-                    motion_y= s->mv[0][0][1] = s->p_mv_table[xy][1];
-                    break;
-                case CANDIDATE_MB_TYPE_INTER_I:
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
-                    for(i=0; i<2; i++){
-                        j= s->field_select[0][i] = s->p_field_select_table[i][xy];
-                        s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
-                        s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
-                    }
-                    motion_x = motion_y = 0;
-                    break;
-                case CANDIDATE_MB_TYPE_INTER4V:
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mv_type = MV_TYPE_8X8;
-                    s->mb_intra= 0;
-                    for(i=0; i<4; i++){
-                        s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
-                        s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
-                    }
-                    motion_x= motion_y= 0;
-                    break;
-                case CANDIDATE_MB_TYPE_DIRECT:
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
-                    s->mb_intra= 0;
-                    motion_x=s->b_direct_mv_table[xy][0];
-                    motion_y=s->b_direct_mv_table[xy][1];
-#ifdef CONFIG_RISKY
-                    ff_mpeg4_set_direct_mv(s, motion_x, motion_y);
-#endif
-                    break;
-                case CANDIDATE_MB_TYPE_BIDIR:
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
-                    s->mb_intra= 0;
-                    motion_x=0;
-                    motion_y=0;
-                    s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
-                    s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
-                    s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
-                    s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
-                    break;
-                case CANDIDATE_MB_TYPE_BACKWARD:
-                    s->mv_dir = MV_DIR_BACKWARD;
-                    s->mb_intra= 0;
-                    motion_x= s->mv[1][0][0] = s->b_back_mv_table[xy][0];
-                    motion_y= s->mv[1][0][1] = s->b_back_mv_table[xy][1];
-                    break;
-                case CANDIDATE_MB_TYPE_FORWARD:
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mb_intra= 0;
-                    motion_x= s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
-                    motion_y= s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
-//                    printf(" %d %d ", motion_x, motion_y);
-                    break;
-                case CANDIDATE_MB_TYPE_FORWARD_I:
-                    s->mv_dir = MV_DIR_FORWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
-                    for(i=0; i<2; i++){
-                        j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
-                        s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
-                        s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
-                    }
-                    motion_x=motion_y=0;
-                    break;
-                case CANDIDATE_MB_TYPE_BACKWARD_I:
-                    s->mv_dir = MV_DIR_BACKWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
+                if(s->avctx->mb_decision == FF_MB_DECISION_BITS)
+                    MPV_decode_mb(s, s->block);
+            } else {
+                int motion_x, motion_y;
+                s->mv_type=MV_TYPE_16X16;
+                // only one MB-Type possible
+
+                switch(mb_type){
+                case CANDIDATE_MB_TYPE_INTRA:
+                    s->mv_dir = 0;
+                    s->mb_intra= 1;
+                    motion_x= s->mv[0][0][0] = 0;
+                    motion_y= s->mv[0][0][1] = 0;
+                    break;
+                case CANDIDATE_MB_TYPE_INTER:
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mb_intra= 0;
+                    motion_x= s->mv[0][0][0] = s->p_mv_table[xy][0];
+                    motion_y= s->mv[0][0][1] = s->p_mv_table[xy][1];
+                    break;
+                case CANDIDATE_MB_TYPE_INTER_I:
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(i=0; i<2; i++){
+                        j= s->field_select[0][i] = s->p_field_select_table[i][xy];
+                        s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
+                        s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
+                    }
+                    motion_x = motion_y = 0;
+                    break;
+                case CANDIDATE_MB_TYPE_INTER4V:
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_8X8;
+                    s->mb_intra= 0;
+                    for(i=0; i<4; i++){
+                        s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
+                        s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
+                    }
+                    motion_x= motion_y= 0;
+                    break;
+                case CANDIDATE_MB_TYPE_DIRECT:
+                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
+                    s->mb_intra= 0;
+                    motion_x=s->b_direct_mv_table[xy][0];
+                    motion_y=s->b_direct_mv_table[xy][1];
+                    ff_mpeg4_set_direct_mv(s, motion_x, motion_y);
+                    break;
+                case CANDIDATE_MB_TYPE_BIDIR:
+                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
+                    s->mb_intra= 0;
+                    motion_x=0;
+                    motion_y=0;
+                    s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
+                    s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
+                    s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
+                    s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
+                    break;
+                case CANDIDATE_MB_TYPE_BACKWARD:
+                    s->mv_dir = MV_DIR_BACKWARD;
+                    s->mb_intra= 0;
+                    motion_x= s->mv[1][0][0] = s->b_back_mv_table[xy][0];
+                    motion_y= s->mv[1][0][1] = s->b_back_mv_table[xy][1];
+                    break;
+                case CANDIDATE_MB_TYPE_FORWARD:
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mb_intra= 0;
+                    motion_x= s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
+                    motion_y= s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
+//                    printf(" %d %d ", motion_x, motion_y);
+                    break;
+                case CANDIDATE_MB_TYPE_FORWARD_I:
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(i=0; i<2; i++){
+                        j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
+                        s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
+                        s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
+                    }
+                    motion_x=motion_y=0;
+                    break;
+                case CANDIDATE_MB_TYPE_BACKWARD_I:
+                    s->mv_dir = MV_DIR_BACKWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(i=0; i<2; i++){
+                        j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
+                        s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
+                        s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
+                    }
+                    motion_x=motion_y=0;
+                    break;
+                case CANDIDATE_MB_TYPE_BIDIR_I:
+                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(dir=0; dir<2; dir++){
+                        for(i=0; i<2; i++){
+                            j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
+                            s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
+                            s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
+                        }
+                    }
+                    motion_x=motion_y=0;
+                    break;
+                default:
+                    motion_x=motion_y=0; //gcc warning fix
+                    av_log(s->avctx, AV_LOG_ERROR, "illegal MB type\n");
+                }
+
+                encode_mb(s, motion_x, motion_y);
+
+                // RAL: Update last macroblock type
+                s->last_mv_dir = s->mv_dir;
+
+                if (s->out_format == FMT_H263 && s->pict_type!=B_TYPE)
+                    ff_h263_update_motion_val(s);
+
+                MPV_decode_mb(s, s->block);
+            }
+
+            /* clean the MV table in IPS frames for direct mode in B frames */
+            if(s->mb_intra /* && I,P,S_TYPE */){
+                s->p_mv_table[xy][0]=0;
+                s->p_mv_table[xy][1]=0;
+            }
+
+            if(s->flags&CODEC_FLAG_PSNR){
+                int w= 16;
+                int h= 16;
+
+                if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
+                if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
+
+                s->current_picture.error[0] += sse(
+                    s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16,
+                    s->dest[0], w, h, s->linesize);
+                s->current_picture.error[1] += sse(
+                    s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,
+                    s->dest[1], w>>1, h>>1, s->uvlinesize);
+                s->current_picture.error[2] += sse(
+                    s, s->new_picture    .data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,
+                    s->dest[2], w>>1, h>>1, s->uvlinesize);
+            }
+            if(s->loop_filter){
+                if(s->out_format == FMT_H263)
+                    ff_h263_loop_filter(s);
+            }
+//printf("MB %d %d bits\n", s->mb_x+s->mb_y*s->mb_stride, put_bits_count(&s->pb));
+        }
+    }
+
+    //not beautiful here but we must write it before flushing so it has to be here
+    if (s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == I_TYPE)
+        msmpeg4_encode_ext_header(s);
+
+    write_slice_end(s);
+
+    /* Send the last GOB if RTP */
+    if (s->avctx->rtp_callback) {
+        int number_mb = (mb_y - s->resync_mb_y)*s->mb_width - s->resync_mb_x;
+        pdif = pbBufPtr(&s->pb) - s->ptr_lastgob;
+        /* Call the RTP callback to send the last GOB */
+        emms_c();
+        s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, pdif, number_mb);
+    }
+
+    return 0;
+}
+
+#define MERGE(field) dst->field += src->field; src->field=0
+static void merge_context_after_me(MpegEncContext *dst, MpegEncContext *src){
+    MERGE(me.scene_change_score);
+    MERGE(me.mc_mb_var_sum_temp);
+    MERGE(me.mb_var_sum_temp);
+}
+
+static void merge_context_after_encode(MpegEncContext *dst, MpegEncContext *src){
+    int i;
+
+    MERGE(dct_count[0]); //note, the other dct vars are not part of the context
+    MERGE(dct_count[1]);
+    MERGE(mv_bits);
+    MERGE(i_tex_bits);
+    MERGE(p_tex_bits);
+    MERGE(i_count);
+    MERGE(f_count);
+    MERGE(b_count);
+    MERGE(skip_count);
+    MERGE(misc_bits);
+    MERGE(error_count);
+    MERGE(padding_bug_score);
+    MERGE(current_picture.error[0]);
+    MERGE(current_picture.error[1]);
+    MERGE(current_picture.error[2]);
+
+    if(dst->avctx->noise_reduction){
+        for(i=0; i<64; i++){
+            MERGE(dct_error_sum[0][i]);
+            MERGE(dct_error_sum[1][i]);
+        }
+    }
+
+    assert(put_bits_count(&src->pb) % 8 ==0);
+    assert(put_bits_count(&dst->pb) % 8 ==0);
+    ff_copy_bits(&dst->pb, src->pb.buf, put_bits_count(&src->pb));
+    flush_put_bits(&dst->pb);
+}
+
+static void estimate_qp(MpegEncContext *s, int dry_run){
+    if (!s->fixed_qscale)
+        s->current_picture_ptr->quality=
+        s->current_picture.quality = ff_rate_estimate_qscale(s, dry_run);
+
+    if(s->adaptive_quant){
+        switch(s->codec_id){
+        case CODEC_ID_MPEG4:
+            ff_clean_mpeg4_qscales(s);
+            break;
+        case CODEC_ID_H263:
+        case CODEC_ID_H263P:
+        case CODEC_ID_FLV1:
+            ff_clean_h263_qscales(s);
+            break;
+        }
+
+        s->lambda= s->lambda_table[0];
+        //FIXME broken
+    }else
+        s->lambda= s->current_picture.quality;
+//printf("%d %d\n", s->avctx->global_quality, s->current_picture.quality);
+    update_qscale(s);
+}
+
+static void encode_picture(MpegEncContext *s, int picture_number)
+{
+    int i;
+    int bits;
+
+    s->picture_number = picture_number;
+
+    /* Reset the average MB variance */
+    s->me.mb_var_sum_temp    =
+    s->me.mc_mb_var_sum_temp = 0;
+
+    /* we need to initialize some time vars before we can encode b-frames */
+    // RAL: Condition added for MPEG1VIDEO
+    if (s->codec_id == CODEC_ID_MPEG1VIDEO || s->codec_id == CODEC_ID_MPEG2VIDEO || (s->h263_pred && !s->h263_msmpeg4))
+        ff_set_mpeg4_time(s, s->picture_number);  //FIXME rename and use has_b_frames or similar
+
+    s->me.scene_change_score=0;
+
+//    s->lambda= s->current_picture_ptr->quality; //FIXME qscale / ... stuff for ME ratedistoration
+
+    if(s->pict_type==I_TYPE){
+        if(s->msmpeg4_version >= 3) s->no_rounding=1;
+        else                        s->no_rounding=0;
+    }else if(s->pict_type!=B_TYPE){
+        if(s->flipflop_rounding || s->codec_id == CODEC_ID_H263P || s->codec_id == CODEC_ID_MPEG4)
+            s->no_rounding ^= 1;
+    }
+
+    if(s->flags & CODEC_FLAG_PASS2){
+        estimate_qp(s, 1);
+        ff_get_2pass_fcode(s);
+    }else if(!(s->flags & CODEC_FLAG_QSCALE)){
+        if(s->pict_type==B_TYPE)
+            s->lambda= s->last_lambda_for[s->pict_type];
+        else
+            s->lambda= s->last_lambda_for[s->last_non_b_pict_type];
+        update_qscale(s);
+    }
+
+    s->mb_intra=0; //for the rate distortion & bit compare functions
+    for(i=1; i<s->avctx->thread_count; i++){
+        ff_update_duplicate_context(s->thread_context[i], s);
+    }
+
+    ff_init_me(s);
+
+    /* Estimate motion for every MB */
+    if(s->pict_type != I_TYPE){
+        s->lambda = (s->lambda * s->avctx->me_penalty_compensation + 128)>>8;
+        s->lambda2= (s->lambda2* s->avctx->me_penalty_compensation + 128)>>8;
+        if(s->pict_type != B_TYPE && s->avctx->me_threshold==0){
+            if((s->avctx->pre_me && s->last_non_b_pict_type==I_TYPE) || s->avctx->pre_me==2){
+                s->avctx->execute(s->avctx, pre_estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
+            }
+        }
+
+        s->avctx->execute(s->avctx, estimate_motion_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
+    }else /* if(s->pict_type == I_TYPE) */{
+        /* I-Frame */
+        for(i=0; i<s->mb_stride*s->mb_height; i++)
+            s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
+
+        if(!s->fixed_qscale){
+            /* finding spatial complexity for I-frame rate control */
+            s->avctx->execute(s->avctx, mb_var_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
+        }
+    }
+    for(i=1; i<s->avctx->thread_count; i++){
+        merge_context_after_me(s, s->thread_context[i]);
+    }
+    s->current_picture.mc_mb_var_sum= s->current_picture_ptr->mc_mb_var_sum= s->me.mc_mb_var_sum_temp;
+    s->current_picture.   mb_var_sum= s->current_picture_ptr->   mb_var_sum= s->me.   mb_var_sum_temp;
+    emms_c();
+
+    if(s->me.scene_change_score > s->avctx->scenechange_threshold && s->pict_type == P_TYPE){
+        s->pict_type= I_TYPE;
+        for(i=0; i<s->mb_stride*s->mb_height; i++)
+            s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
+//printf("Scene change detected, encoding as I Frame %d %d\n", s->current_picture.mb_var_sum, s->current_picture.mc_mb_var_sum);
+    }
+
+    if(!s->umvplus){
+        if(s->pict_type==P_TYPE || s->pict_type==S_TYPE) {
+            s->f_code= ff_get_best_fcode(s, s->p_mv_table, CANDIDATE_MB_TYPE_INTER);
+
+            if(s->flags & CODEC_FLAG_INTERLACED_ME){
+                int a,b;
+                a= ff_get_best_fcode(s, s->p_field_mv_table[0][0], CANDIDATE_MB_TYPE_INTER_I); //FIXME field_select
+                b= ff_get_best_fcode(s, s->p_field_mv_table[1][1], CANDIDATE_MB_TYPE_INTER_I);
+                s->f_code= FFMAX(s->f_code, FFMAX(a,b));
+            }
+
+            ff_fix_long_p_mvs(s);
+            ff_fix_long_mvs(s, NULL, 0, s->p_mv_table, s->f_code, CANDIDATE_MB_TYPE_INTER, 0);
+            if(s->flags & CODEC_FLAG_INTERLACED_ME){
+                int j;
+                for(i=0; i<2; i++){
+                    for(j=0; j<2; j++)
+                        ff_fix_long_mvs(s, s->p_field_select_table[i], j,
+                                        s->p_field_mv_table[i][j], s->f_code, CANDIDATE_MB_TYPE_INTER_I, 0);
+                }
+            }
+        }
+
+        if(s->pict_type==B_TYPE){
+            int a, b;
+
+            a = ff_get_best_fcode(s, s->b_forw_mv_table, CANDIDATE_MB_TYPE_FORWARD);
+            b = ff_get_best_fcode(s, s->b_bidir_forw_mv_table, CANDIDATE_MB_TYPE_BIDIR);
+            s->f_code = FFMAX(a, b);
+
+            a = ff_get_best_fcode(s, s->b_back_mv_table, CANDIDATE_MB_TYPE_BACKWARD);
+            b = ff_get_best_fcode(s, s->b_bidir_back_mv_table, CANDIDATE_MB_TYPE_BIDIR);
+            s->b_code = FFMAX(a, b);
+
+            ff_fix_long_mvs(s, NULL, 0, s->b_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_FORWARD, 1);
+            ff_fix_long_mvs(s, NULL, 0, s->b_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BACKWARD, 1);
+            ff_fix_long_mvs(s, NULL, 0, s->b_bidir_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_BIDIR, 1);
+            ff_fix_long_mvs(s, NULL, 0, s->b_bidir_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BIDIR, 1);
+            if(s->flags & CODEC_FLAG_INTERLACED_ME){
+                int dir, j;
+                for(dir=0; dir<2; dir++){
                     for(i=0; i<2; i++){
-                        j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
-                        s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
-                        s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
-                    }
-                    motion_x=motion_y=0;
-                    break;
-                case CANDIDATE_MB_TYPE_BIDIR_I:
-                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
-                    s->mv_type = MV_TYPE_FIELD;
-                    s->mb_intra= 0;
-                    for(dir=0; dir<2; dir++){
-                        for(i=0; i<2; i++){
-                            j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
-                            s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
-                            s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
+                        for(j=0; j<2; j++){
+                            int type= dir ? (CANDIDATE_MB_TYPE_BACKWARD_I|CANDIDATE_MB_TYPE_BIDIR_I)
+                                          : (CANDIDATE_MB_TYPE_FORWARD_I |CANDIDATE_MB_TYPE_BIDIR_I);
+                            ff_fix_long_mvs(s, s->b_field_select_table[dir][i], j,
+                                            s->b_field_mv_table[dir][i][j], dir ? s->b_code : s->f_code, type, 1);
                         }
                     }
-                    motion_x=motion_y=0;
-                    break;
-                default:
-                    motion_x=motion_y=0; //gcc warning fix
-                    av_log(s->avctx, AV_LOG_ERROR, "illegal MB type\n");
                 }
-
-                encode_mb(s, motion_x, motion_y);
-
-                // RAL: Update last macrobloc type
-                s->last_mv_dir = s->mv_dir;
-            
-#ifdef CONFIG_RISKY
-                if (s->out_format == FMT_H263 && s->pict_type!=B_TYPE)
-                    ff_h263_update_motion_val(s);
-#endif
-               
-                MPV_decode_mb(s, s->block);
             }
+        }
+    }
 
-            /* clean the MV table in IPS frames for direct mode in B frames */
-            if(s->mb_intra /* && I,P,S_TYPE */){
-                s->p_mv_table[xy][0]=0;
-                s->p_mv_table[xy][1]=0;
-            }
-            
-            if(s->flags&CODEC_FLAG_PSNR){
-                int w= 16;
-                int h= 16;
+    estimate_qp(s, 0);
 
-                if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
-                if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
+    if(s->qscale < 3 && s->max_qcoeff<=128 && s->pict_type==I_TYPE && !(s->flags & CODEC_FLAG_QSCALE))
+        s->qscale= 3; //reduce clipping problems
 
-                s->current_picture_ptr->error[0] += sse(
-                    s, s->new_picture.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16,
-                    s->dest[0], w, h, s->linesize);
-                s->current_picture_ptr->error[1] += sse(
-                    s, s->new_picture.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,
-                    s->dest[1], w>>1, h>>1, s->uvlinesize);
-                s->current_picture_ptr->error[2] += sse(
-                    s, s->new_picture    .data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,
-                    s->dest[2], w>>1, h>>1, s->uvlinesize);
-            }
-            if(s->loop_filter)
-                ff_h263_loop_filter(s);
-//printf("MB %d %d bits\n", s->mb_x+s->mb_y*s->mb_stride, put_bits_count(&s->pb));
+    if (s->out_format == FMT_MJPEG) {
+        /* for mjpeg, we do include qscale in the matrix */
+        s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0];
+        for(i=1;i<64;i++){
+            int j= s->dsp.idct_permutation[i];
+
+            s->intra_matrix[j] = clip_uint8((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3) & 0xFF;
         }
+        convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
+                       s->intra_matrix, s->intra_quant_bias, 8, 8, 1);
+        s->qscale= 8;
     }
-    emms_c();
 
-#ifdef CONFIG_RISKY
-    if(s->codec_id==CODEC_ID_MPEG4 && s->partitioned_frame)
-        ff_mpeg4_merge_partitions(s);
+    //FIXME var duplication
+    s->current_picture_ptr->key_frame=
+    s->current_picture.key_frame= s->pict_type == I_TYPE; //FIXME pic_ptr
+    s->current_picture_ptr->pict_type=
+    s->current_picture.pict_type= s->pict_type;
 
-    if (s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == I_TYPE)
-        msmpeg4_encode_ext_header(s);
+    if(s->current_picture.key_frame)
+        s->picture_in_gop_number=0;
 
-    if(s->codec_id==CODEC_ID_MPEG4) 
-        ff_mpeg4_stuffing(&s->pb);
+    s->last_bits= put_bits_count(&s->pb);
+    switch(s->out_format) {
+    case FMT_MJPEG:
+        mjpeg_picture_header(s);
+        break;
+#ifdef CONFIG_H261_ENCODER
+    case FMT_H261:
+        ff_h261_encode_picture_header(s, picture_number);
+        break;
+#endif
+    case FMT_H263:
+        if (s->codec_id == CODEC_ID_WMV2)
+            ff_wmv2_encode_picture_header(s, picture_number);
+        else if (s->h263_msmpeg4)
+            msmpeg4_encode_picture_header(s, picture_number);
+        else if (s->h263_pred)
+            mpeg4_encode_picture_header(s, picture_number);
+#ifdef CONFIG_RV10_ENCODER
+        else if (s->codec_id == CODEC_ID_RV10)
+            rv10_encode_picture_header(s, picture_number);
+#endif
+#ifdef CONFIG_RV20_ENCODER
+        else if (s->codec_id == CODEC_ID_RV20)
+            rv20_encode_picture_header(s, picture_number);
 #endif
+        else if (s->codec_id == CODEC_ID_FLV1)
+            ff_flv_encode_picture_header(s, picture_number);
+        else
+            h263_encode_picture_header(s, picture_number);
+        break;
+    case FMT_MPEG1:
+        mpeg1_encode_picture_header(s, picture_number);
+        break;
+    case FMT_H264:
+        break;
+    default:
+        assert(0);
+    }
+    bits= put_bits_count(&s->pb);
+    s->header_bits= bits - s->last_bits;
 
-    /* Send the last GOB if RTP */    
-    if (s->avctx->rtp_callback) {
-        flush_put_bits(&s->pb);
-        pdif = pbBufPtr(&s->pb) - s->ptr_lastgob;
-        /* Call the RTP callback to send the last GOB */
-        s->avctx->rtp_callback(s->ptr_lastgob, pdif, 0);
+    for(i=1; i<s->avctx->thread_count; i++){
+        update_duplicate_context_after_me(s->thread_context[i], s);
+    }
+    s->avctx->execute(s->avctx, encode_thread, (void**)&(s->thread_context[0]), NULL, s->avctx->thread_count);
+    for(i=1; i<s->avctx->thread_count; i++){
+        merge_context_after_encode(s, s->thread_context[i]);
     }
+    emms_c();
 }
 
 #endif //CONFIG_ENCODERS
@@ -4627,7 +5653,7 @@ static void  denoise_dct_c(MpegEncContext *s, DCTELEM *block){
 
 #ifdef CONFIG_ENCODERS
 
-static int dct_quantize_trellis_c(MpegEncContext *s, 
+static int dct_quantize_trellis_c(MpegEncContext *s,
                         DCTELEM *block, int n,
                         int qscale, int *overflow){
     const int *qmat;
@@ -4652,9 +5678,9 @@ static int dct_quantize_trellis_c(MpegEncContext *s,
     uint8_t * length;
     uint8_t * last_length;
     const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
-        
+
     s->dsp.fdct (block);
-    
+
     if(s->dct_error_sum)
         s->denoise_dct(s, block);
     qmul= qscale*16;
@@ -4673,7 +5699,7 @@ static int dct_quantize_trellis_c(MpegEncContext *s,
             q = 1 << 3;
             qadd=0;
         }
-            
+
         /* note: block[0] is assumed to be positive */
         block[0] = (block[0] + (q >> 1)) / q;
         start_i = 1;
@@ -4731,9 +5757,9 @@ static int dct_quantize_trellis_c(MpegEncContext *s,
             coeff_count[i]= 1;
         }
     }
-    
-    *overflow= s->max_qcoeff < max; //overflow might have happend
-    
+
+    *overflow= s->max_qcoeff < max; //overflow might have happened
+
     if(last_non_zero < start_i){
         memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
         return last_non_zero;
@@ -4742,7 +5768,7 @@ static int dct_quantize_trellis_c(MpegEncContext *s,
     score_tab[start_i]= 0;
     survivor[0]= start_i;
     survivor_count= 1;
-    
+
     for(i=start_i; i<=last_non_zero; i++){
         int level_index, j;
         const int dct_coeff= ABS(block[ scantable[i] ]);
@@ -4753,7 +5779,7 @@ static int dct_quantize_trellis_c(MpegEncContext *s,
             int level= coeff[level_index][i];
             const int alevel= ABS(level);
             int unquant_coeff;
-            
+
             assert(level);
 
             if(s->out_format == FMT_H263){
@@ -4777,7 +5803,7 @@ static int dct_quantize_trellis_c(MpegEncContext *s,
                     int run= i - survivor[j];
                     int score= distoration + length[UNI_AC_ENC_INDEX(run, level)]*lambda;
                     score += score_tab[i-run];
-                    
+
                     if(score < best_score){
                         best_score= score;
                         run_tab[i+1]= run;
@@ -4803,7 +5829,7 @@ static int dct_quantize_trellis_c(MpegEncContext *s,
                 for(j=survivor_count-1; j>=0; j--){
                     int run= i - survivor[j];
                     int score= distoration + score_tab[i-run];
-                    
+
                     if(score < best_score){
                         best_score= score;
                         run_tab[i+1]= run;
@@ -4825,7 +5851,7 @@ static int dct_quantize_trellis_c(MpegEncContext *s,
                 }
             }
         }
-        
+
         score_tab[i+1]= best_score;
 
         //Note: there is a vlc code in mpeg4 which is 1 bit shorter then another one with a shorter run and the same level
@@ -4860,18 +5886,18 @@ static int dct_quantize_trellis_c(MpegEncContext *s,
     }
 
     s->coded_score[n] = last_score;
-    
+
     dc= ABS(block[0]);
     last_non_zero= last_i - 1;
     memset(block + start_i, 0, (64-start_i)*sizeof(DCTELEM));
-    
+
     if(last_non_zero < start_i)
         return last_non_zero;
 
     if(last_non_zero == 0 && start_i == 0){
         int best_level= 0;
         int best_score= dc * dc;
-        
+
         for(i=0; i<coeff_count[0]; i++){
             int level= coeff[i][0];
             int alevel= ABS(level);
@@ -4907,7 +5933,7 @@ static int dct_quantize_trellis_c(MpegEncContext *s,
 
     block[ perm_scantable[last_non_zero] ]= last_level;
     i -= last_run + 1;
-    
+
     for(; i>start_i; i -= run_tab[i] + 1){
         block[ perm_scantable[i-1] ]= level_tab[i];
     }
@@ -4941,7 +5967,7 @@ static int dct_quantize_refine(MpegEncContext *s, //FIXME breaks denoise?
                         DCTELEM *block, int16_t *weight, DCTELEM *orig,
                         int n, int qscale){
     int16_t rem[64];
-    DCTELEM d1[64];
+    DECLARE_ALIGNED_16(DCTELEM, d1[64]);
     const int *qmat;
     const uint8_t *scantable= s->intra_scantable.scantable;
     const uint8_t *perm_scantable= s->intra_scantable.permutated;
@@ -4951,7 +5977,6 @@ static int dct_quantize_refine(MpegEncContext *s, //FIXME breaks denoise?
     int prev_run=0;
     int prev_level=0;
     int qmul, qadd, start_i, last_non_zero, i, dc;
-    const int esc_length= s->ac_esc_length;
     uint8_t * length;
     uint8_t * last_length;
     int lambda;
@@ -4968,7 +5993,7 @@ static int messed_sign=0;
 
     if(basis[0][0] == 0)
         build_basis(s->dsp.idct_permutation);
-    
+
     qmul= qscale*2;
     qadd= (qscale-1)|1;
     if (s->mb_intra) {
@@ -5006,7 +6031,7 @@ static int messed_sign=0;
 #endif
     dc += (1<<(RECON_SHIFT-1));
     for(i=0; i<64; i++){
-        rem[i]= dc - (orig[i]<<RECON_SHIFT); //FIXME  use orig dirrectly insteadof copying to rem[]
+        rem[i]= dc - (orig[i]<<RECON_SHIFT); //FIXME  use orig dirrectly instead of copying to rem[]
     }
 #ifdef REFINE_STATS
 STOP_TIMER("memset rem[]")}
@@ -5022,7 +6047,7 @@ STOP_TIMER("memset rem[]")}
 
         weight[i] = w;
 //        w=weight[i] = (63*qns + (w/2)) / w;
-         
+
         assert(w>0);
         assert(w<(1<<6));
         sum += w*w;
@@ -5037,7 +6062,7 @@ STOP_TIMER("memset rem[]")}
         int j= perm_scantable[i];
         const int level= block[j];
         int coeff;
-        
+
         if(level){
             if(level<0) coeff= qmul*level - qadd;
             else        coeff= qmul*level + qadd;
@@ -5059,10 +6084,9 @@ STOP_TIMER("init rem[]")
 #endif
     for(;;){
         int best_score=s->dsp.try_8x8basis(rem, weight, basis[0], 0);
-        int nochange_score= best_score;
         int best_coeff=0;
         int best_change=0;
-        int run2, best_unquant_change, analyze_gradient;
+        int run2, best_unquant_change=0, analyze_gradient;
 #ifdef REFINE_STATS
 {START_TIMER
 #endif
@@ -5074,7 +6098,7 @@ STOP_TIMER("init rem[]")
 #endif
             for(i=0; i<64; i++){
                 int w= weight[i];
-            
+
                 d1[i] = (rem[i]*w*w + (1<<(RECON_SHIFT+12-1)))>>(RECON_SHIFT+12);
             }
 #ifdef REFINE_STATS
@@ -5092,13 +6116,13 @@ STOP_TIMER("dct")}
             int change, old_coeff;
 
             assert(s->mb_intra);
-            
+
             old_coeff= q*level;
-            
+
             for(change=-1; change<=1; change+=2){
                 int new_level= level + change;
                 int score, new_coeff;
-                
+
                 new_coeff= q*new_level;
                 if(new_coeff >= 2048 || new_coeff < 0)
                     continue;
@@ -5112,7 +6136,7 @@ STOP_TIMER("dct")}
                 }
             }
         }
-        
+
         run=0;
         rle_index=0;
         run2= run_tab[rle_index++];
@@ -5136,11 +6160,11 @@ STOP_TIMER("dct")}
                 run2--;
                 assert(run2>=0 || i >= last_non_zero );
             }
-            
+
             for(change=-1; change<=1; change+=2){
                 int new_level= level + change;
                 int score, new_coeff, unquant_change;
-                
+
                 score=0;
                 if(s->avctx->quantizer_noise_shaping < 2 && ABS(new_level) > ABS(level))
                    continue;
@@ -5151,7 +6175,7 @@ STOP_TIMER("dct")}
                     if(new_coeff >= 2048 || new_coeff <= -2048)
                         continue;
                     //FIXME check for overflow
-                    
+
                     if(level){
                         if(level < 63 && level > -63){
                             if(i < last_non_zero)
@@ -5163,7 +6187,7 @@ STOP_TIMER("dct")}
                         }
                     }else{
                         assert(ABS(new_level)==1);
-                        
+
                         if(analyze_gradient){
                             int g= d1[ scantable[i] ];
                             if(g && (g^new_level) >= 0)
@@ -5173,7 +6197,7 @@ STOP_TIMER("dct")}
                         if(i < last_non_zero){
                             int next_i= i + run2 + 1;
                             int next_level= block[ perm_scantable[next_i] ] + 64;
-                            
+
                             if(next_level&(~127))
                                 next_level= 0;
 
@@ -5200,7 +6224,7 @@ STOP_TIMER("dct")}
                     if(i < last_non_zero){
                         int next_i= i + run2 + 1;
                         int next_level= block[ perm_scantable[next_i] ] + 64;
-                            
+
                         if(next_level&(~127))
                             next_level= 0;
 
@@ -5220,12 +6244,12 @@ STOP_TIMER("dct")}
                         }
                     }
                 }
-                
+
                 score *= lambda;
 
                 unquant_change= new_coeff - old_coeff;
                 assert((score < 100*lambda && score > -100*lambda) || lambda==0);
-                
+
                 score+= s->dsp.try_8x8basis(rem, weight, basis[j], unquant_change);
                 if(score<best_score){
                     best_score= score;
@@ -5250,9 +6274,9 @@ STOP_TIMER("iterative step")}
 
         if(best_change){
             int j= perm_scantable[ best_coeff ];
-            
+
             block[j] += best_change;
-            
+
             if(best_coeff > last_non_zero){
                 last_non_zero= best_coeff;
                 assert(block[j]);
@@ -5291,7 +6315,7 @@ if(256*256*256*64 % count == 0){
             for(i=start_i; i<=last_non_zero; i++){
                 int j= perm_scantable[i];
                 const int level= block[j];
-        
+
                  if(level){
                      run_tab[rle_index++]=run;
                      run=0;
@@ -5299,7 +6323,7 @@ if(256*256*256*64 % count == 0){
                      run++;
                  }
             }
-            
+
             s->dsp.add_8x8basis(rem, basis[j], best_unquant_change);
         }else{
             break;
@@ -5315,7 +6339,7 @@ STOP_TIMER("iterative search")
     return last_non_zero;
 }
 
-static int dct_quantize_c(MpegEncContext *s, 
+static int dct_quantize_c(MpegEncContext *s,
                         DCTELEM *block, int n,
                         int qscale, int *overflow)
 {
@@ -5341,7 +6365,7 @@ static int dct_quantize_c(MpegEncContext *s,
         } else
             /* For AIC we skip quant/dequant of INTRADC */
             q = 1 << 3;
-            
+
         /* note: block[0] is assumed to be positive */
         block[0] = (block[0] + (q >> 1)) / q;
         start_i = 1;
@@ -5386,26 +6410,26 @@ static int dct_quantize_c(MpegEncContext *s,
             block[j]=0;
         }
     }
-    *overflow= s->max_qcoeff < max; //overflow might have happend
-    
+    *overflow= s->max_qcoeff < max; //overflow might have happened
+
     /* we need this permutation so that we correct the IDCT, we only permute the !=0 elements */
     if (s->dsp.idct_permutation_type != FF_NO_IDCT_PERM)
-       ff_block_permute(block, s->dsp.idct_permutation, scantable, last_non_zero);
+        ff_block_permute(block, s->dsp.idct_permutation, scantable, last_non_zero);
 
     return last_non_zero;
 }
 
 #endif //CONFIG_ENCODERS
 
-static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s, 
+static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
                                    DCTELEM *block, int n, int qscale)
 {
     int i, level, nCoeffs;
     const uint16_t *quant_matrix;
 
     nCoeffs= s->block_last_index[n];
-    
-    if (n < 4) 
+
+    if (n < 4)
         block[0] = block[0] * s->y_dc_scale;
     else
         block[0] = block[0] * s->c_dc_scale;
@@ -5429,14 +6453,14 @@ static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
     }
 }
 
-static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s, 
+static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
                                    DCTELEM *block, int n, int qscale)
 {
     int i, level, nCoeffs;
     const uint16_t *quant_matrix;
 
     nCoeffs= s->block_last_index[n];
-    
+
     quant_matrix = s->inter_matrix;
     for(i=0; i<=nCoeffs; i++) {
         int j= s->intra_scantable.permutated[i];
@@ -5458,7 +6482,7 @@ static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
     }
 }
 
-static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s, 
+static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
                                    DCTELEM *block, int n, int qscale)
 {
     int i, level, nCoeffs;
@@ -5466,8 +6490,8 @@ static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
 
     if(s->alternate_scan) nCoeffs= 63;
     else nCoeffs= s->block_last_index[n];
-    
-    if (n < 4) 
+
+    if (n < 4)
         block[0] = block[0] * s->y_dc_scale;
     else
         block[0] = block[0] * s->c_dc_scale;
@@ -5488,7 +6512,7 @@ static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
     }
 }
 
-static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s, 
+static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
                                    DCTELEM *block, int n, int qscale)
 {
     int i, level, nCoeffs;
@@ -5497,7 +6521,7 @@ static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
 
     if(s->alternate_scan) nCoeffs= 63;
     else nCoeffs= s->block_last_index[n];
-    
+
     quant_matrix = s->inter_matrix;
     for(i=0; i<=nCoeffs; i++) {
         int j= s->intra_scantable.permutated[i];
@@ -5519,18 +6543,18 @@ static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
     block[63]^=sum&1;
 }
 
-static void dct_unquantize_h263_intra_c(MpegEncContext *s, 
+static void dct_unquantize_h263_intra_c(MpegEncContext *s,
                                   DCTELEM *block, int n, int qscale)
 {
     int i, level, qmul, qadd;
     int nCoeffs;
-    
+
     assert(s->block_last_index[n]>=0);
-    
+
     qmul = qscale << 1;
-    
+
     if (!s->h263_aic) {
-        if (n < 4) 
+        if (n < 4)
             block[0] = block[0] * s->y_dc_scale;
         else
             block[0] = block[0] * s->c_dc_scale;
@@ -5556,17 +6580,17 @@ static void dct_unquantize_h263_intra_c(MpegEncContext *s,
     }
 }
 
-static void dct_unquantize_h263_inter_c(MpegEncContext *s, 
+static void dct_unquantize_h263_inter_c(MpegEncContext *s,
                                   DCTELEM *block, int n, int qscale)
 {
     int i, level, qmul, qadd;
     int nCoeffs;
-    
+
     assert(s->block_last_index[n]>=0);
-    
+
     qadd = (qscale - 1) | 1;
     qmul = qscale << 1;
-    
+
     nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
 
     for(i=0; i<=nCoeffs; i++) {
@@ -5582,82 +6606,7 @@ static void dct_unquantize_h263_inter_c(MpegEncContext *s,
     }
 }
 
-static const AVOption mpeg4_options[] =
-{
-    AVOPTION_CODEC_INT("bitrate", "desired video bitrate", bit_rate, 4, 240000000, 800000),
-    AVOPTION_CODEC_INT("ratetol", "number of bits the bitstream is allowed to diverge from the reference"
-                      "the reference can be CBR (for CBR pass1) or VBR (for pass2)",
-                      bit_rate_tolerance, 4, 240000000, 8000),
-    AVOPTION_CODEC_INT("qmin", "minimum quantizer", qmin, 1, 31, 2),
-    AVOPTION_CODEC_INT("qmax", "maximum quantizer", qmax, 1, 31, 31),
-    AVOPTION_CODEC_STRING("rc_eq", "rate control equation",
-                         rc_eq, "tex^qComp,option1,options2", 0),
-    AVOPTION_CODEC_INT("rc_minrate", "rate control minimum bitrate",
-                      rc_min_rate, 4, 24000000, 0),
-    AVOPTION_CODEC_INT("rc_maxrate", "rate control maximum bitrate",
-                      rc_max_rate, 4, 24000000, 0),
-    AVOPTION_CODEC_DOUBLE("rc_buf_aggresivity", "rate control buffer aggresivity",
-                         rc_buffer_aggressivity, 4, 24000000, 0),
-    AVOPTION_CODEC_DOUBLE("rc_initial_cplx", "initial complexity for pass1 ratecontrol",
-                         rc_initial_cplx, 0., 9999999., 0),
-    AVOPTION_CODEC_DOUBLE("i_quant_factor", "qscale factor between p and i frames",
-                         i_quant_factor, 0., 0., 0),
-    AVOPTION_CODEC_DOUBLE("i_quant_offset", "qscale offset between p and i frames",
-                         i_quant_factor, -999999., 999999., 0),
-    AVOPTION_CODEC_INT("dct_algo", "dct alghorithm",
-                      dct_algo, 0, 5, 0), // fixme - "Auto,FastInt,Int,MMX,MLib,Altivec"
-    AVOPTION_CODEC_DOUBLE("lumi_masking", "luminance masking",
-                         lumi_masking, 0., 999999., 0),
-    AVOPTION_CODEC_DOUBLE("temporal_cplx_masking", "temporary complexity masking",
-                         temporal_cplx_masking, 0., 999999., 0),
-    AVOPTION_CODEC_DOUBLE("spatial_cplx_masking", "spatial complexity masking",
-                         spatial_cplx_masking, 0., 999999., 0),
-    AVOPTION_CODEC_DOUBLE("p_masking", "p block masking",
-                         p_masking, 0., 999999., 0),
-    AVOPTION_CODEC_DOUBLE("dark_masking", "darkness masking",
-                         dark_masking, 0., 999999., 0),
-    AVOPTION_CODEC_INT("idct_algo", "idct alghorithm",
-                      idct_algo, 0, 8, 0), // fixme - "Auto,Int,Simple,SimpleMMX,LibMPEG2MMX,PS2,MLib,ARM,Altivec"
-
-    AVOPTION_CODEC_INT("mb_qmin", "minimum MB quantizer",
-                      mb_qmin, 0, 8, 0),
-    AVOPTION_CODEC_INT("mb_qmax", "maximum MB quantizer",
-                      mb_qmin, 0, 8, 0),
-
-    AVOPTION_CODEC_INT("me_cmp", "ME compare function",
-                      me_cmp, 0, 24000000, 0),
-    AVOPTION_CODEC_INT("me_sub_cmp", "subpixel ME compare function",
-                      me_sub_cmp, 0, 24000000, 0),
-
-
-    AVOPTION_CODEC_INT("dia_size", "ME diamond size & shape",
-                      dia_size, 0, 24000000, 0),
-    AVOPTION_CODEC_INT("last_predictor_count", "amount of previous MV predictors",
-                      last_predictor_count, 0, 24000000, 0),
-
-    AVOPTION_CODEC_INT("pre_me", "pre pass for ME",
-                      pre_me, 0, 24000000, 0),
-    AVOPTION_CODEC_INT("me_pre_cmp", "ME pre pass compare function",
-                      me_pre_cmp, 0, 24000000, 0),
-
-    AVOPTION_CODEC_INT("me_range", "maximum ME search range",
-                      me_range, 0, 24000000, 0),
-    AVOPTION_CODEC_INT("pre_dia_size", "ME pre pass diamod size & shape",
-                      pre_dia_size, 0, 24000000, 0),
-    AVOPTION_CODEC_INT("me_subpel_quality", "subpel ME quality",
-                      me_subpel_quality, 0, 24000000, 0),
-    AVOPTION_CODEC_INT("me_range", "maximum ME search range",
-                      me_range, 0, 24000000, 0),
-    AVOPTION_CODEC_FLAG("psnr", "calculate PSNR of compressed frames",
-                       flags, CODEC_FLAG_PSNR, 0),
-    AVOPTION_CODEC_RCOVERRIDE("rc_override", "ratecontrol override (=startframe,endframe,qscale,quality_factor)",
-                             rc_override),
-    AVOPTION_SUB(avoptions_common),
-    AVOPTION_END()
-};
-
 #ifdef CONFIG_ENCODERS
-#ifdef CONFIG_RISKY
 AVCodec h263_encoder = {
     "h263",
     CODEC_TYPE_VIDEO,
@@ -5666,6 +6615,7 @@ AVCodec h263_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec h263p_encoder = {
@@ -5676,6 +6626,7 @@ AVCodec h263p_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec flv_encoder = {
@@ -5686,6 +6637,7 @@ AVCodec flv_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec rv10_encoder = {
@@ -5696,6 +6648,18 @@ AVCodec rv10_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
+};
+
+AVCodec rv20_encoder = {
+    "rv20",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_RV20,
+    sizeof(MpegEncContext),
+    MPV_encode_init,
+    MPV_encode_picture,
+    MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec mpeg4_encoder = {
@@ -5706,7 +6670,8 @@ AVCodec mpeg4_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
-    .options = mpeg4_options,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
+    .capabilities= CODEC_CAP_DELAY,
 };
 
 AVCodec msmpeg4v1_encoder = {
@@ -5717,7 +6682,7 @@ AVCodec msmpeg4v1_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
-    .options = mpeg4_options,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec msmpeg4v2_encoder = {
@@ -5728,7 +6693,7 @@ AVCodec msmpeg4v2_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
-    .options = mpeg4_options,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec msmpeg4v3_encoder = {
@@ -5739,7 +6704,7 @@ AVCodec msmpeg4v3_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
-    .options = mpeg4_options,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec wmv1_encoder = {
@@ -5750,11 +6715,9 @@ AVCodec wmv1_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
-    .options = mpeg4_options,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
-#endif
-
 AVCodec mjpeg_encoder = {
     "mjpeg",
     CODEC_TYPE_VIDEO,
@@ -5763,6 +6726,7 @@ AVCodec mjpeg_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUVJ420P, -1},
 };
 
 #endif //CONFIG_ENCODERS