]> git.sesse.net Git - mlt/blobdiff - src/modules/avformat/producer_avformat.c
Add service locks for parallelism.
[mlt] / src / modules / avformat / producer_avformat.c
index 7b5ddbb8dfaa28a17570860f53d89b06f1edfeaa..8c4171b705ce599d312d90ef7ce328c13949e3a7 100644 (file)
 #include <framework/mlt_log.h>
 #include <framework/mlt_deque.h>
 #include <framework/mlt_factory.h>
+#include <framework/mlt_cache.h>
 
 // ffmpeg Header files
-#include <avformat.h>
-#include <opt.h>
+#include <libavformat/avformat.h>
+#include <libavcodec/opt.h>
 #ifdef SWSCALE
-#  include <swscale.h>
+#  include <libswscale/swscale.h>
 #endif
 #if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
 #  include "audioconvert.h"
 #endif
 #ifdef VDPAU
-#include <vdpau.h>
+#include <libavcodec/vdpau.h>
 #endif
 
 // System header files
@@ -46,7 +47,6 @@
 #include <string.h>
 #include <pthread.h>
 #include <limits.h>
-#include <dlfcn.h>
 
 #if LIBAVUTIL_VERSION_INT < (50<<16)
 #define PIX_FMT_RGB32 PIX_FMT_RGBA32
@@ -56,7 +56,7 @@
 #define POSITION_INITIAL (-2)
 #define POSITION_INVALID (-1)
 
-#define MAX_AUDIO_STREAMS (8)
+#define MAX_AUDIO_STREAMS (10)
 #define MAX_VDPAU_SURFACES (10)
 
 void avformat_lock( );
@@ -64,7 +64,7 @@ void avformat_unlock( );
 
 struct producer_avformat_s
 {
-       struct mlt_producer_s parent;
+       mlt_producer parent;
        AVFormatContext *dummy_context;
        AVFormatContext *audio_format;
        AVFormatContext *video_format;
@@ -94,6 +94,8 @@ struct producer_avformat_s
        int max_frequency;
        unsigned int invalid_pts_counter;
        double resample_factor;
+       mlt_cache image_cache;
+       int colorspace;
 #ifdef VDPAU
        struct
        {
@@ -114,7 +116,7 @@ typedef struct producer_avformat_s *producer_avformat;
 // Forward references.
 static int producer_open( producer_avformat this, mlt_profile profile, char *file );
 static int producer_get_frame( mlt_producer this, mlt_frame_ptr frame, int index );
-static void producer_format_close( void *context );
+static void producer_avformat_close( producer_avformat );
 static void producer_close( mlt_producer parent );
 
 #ifdef VDPAU
@@ -124,7 +126,7 @@ static void producer_close( mlt_producer parent );
 /** Constructor for libavformat.
 */
 
-mlt_producer producer_avformat_init( mlt_profile profile, char *file )
+mlt_producer producer_avformat_init( mlt_profile profile, const char *service, char *file )
 {
        int skip = 0;
 
@@ -163,12 +165,13 @@ mlt_producer producer_avformat_init( mlt_profile profile, char *file )
        if ( !skip && file )
        {
                // Construct the producer
+               mlt_producer producer = calloc( 1, sizeof( struct mlt_producer_s ) );
                producer_avformat this = calloc( 1, sizeof( struct producer_avformat_s ) );
 
                // Initialise it
-               if ( mlt_producer_init( &this->parent, this ) == 0 )
+               if ( mlt_producer_init( producer, this ) == 0 )
                {
-                       mlt_producer producer = &this->parent;
+                       this->parent = producer;
 
                        // Get the properties
                        mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
@@ -182,28 +185,46 @@ mlt_producer producer_avformat_init( mlt_profile profile, char *file )
                        // Register our get_frame implementation
                        producer->get_frame = producer_get_frame;
                        
-                       this->resample_factor = 1.0;
-
-                       // Open the file
-                       if ( producer_open( this, profile, file ) != 0 )
+                       if ( strcmp( service, "avformat-novalidate" ) )
                        {
-                               // Clean up
-                               mlt_producer_close( producer );
-                               producer = NULL;
+                               // Open the file
+                               if ( producer_open( this, profile, file ) != 0 )
+                               {
+                                       // Clean up
+                                       mlt_producer_close( producer );
+                                       producer = NULL;
+                               }
+                               else
+                               {
+                                       // Close the file to release resources for large playlists - reopen later as needed
+                                       avformat_lock();
+                                       if ( this->dummy_context )
+                                               av_close_input_file( this->dummy_context );
+                                       this->dummy_context = NULL;
+                                       if ( this->audio_format )
+                                               av_close_input_file( this->audio_format );
+                                       this->audio_format = NULL;
+                                       if ( this->video_format )
+                                               av_close_input_file( this->video_format );
+                                       this->video_format = NULL;
+                                       avformat_unlock();
+       
+                                       // Default the user-selectable indices from the auto-detected indices
+                                       mlt_properties_set_int( properties, "audio_index",  this->audio_index );
+                                       mlt_properties_set_int( properties, "video_index",  this->video_index );
+                                       
+#ifdef VDPAU
+                                       mlt_service_cache_set_size( MLT_PRODUCER_SERVICE(producer), "producer_avformat", 5 );
+#endif
+                                       mlt_service_cache_put( MLT_PRODUCER_SERVICE(producer), "producer_avformat", this, 0, (mlt_destructor) producer_avformat_close );
+                               }
                        }
                        else
                        {
-                               // Close the file to release resources for large playlists - reopen later as needed
-                               producer_format_close( this->dummy_context );
-                               this->dummy_context = NULL;
-                               producer_format_close( this->audio_format );
-                               this->audio_format = NULL;
-                               producer_format_close( this->video_format );
-                               this->video_format = NULL;
-
-                               // Default the user-selectable indices from the auto-detected indices
-                               mlt_properties_set_int( properties, "audio_index",  this->audio_index );
-                               mlt_properties_set_int( properties, "video_index",  this->video_index );
+#ifdef VDPAU
+                               mlt_service_cache_set_size( MLT_PRODUCER_SERVICE(producer), "producer_avformat", 5 );
+#endif
+                               mlt_service_cache_put( MLT_PRODUCER_SERVICE(producer), "producer_avformat", this, 0, (mlt_destructor) producer_avformat_close );
                        }
                        return producer;
                }
@@ -242,7 +263,14 @@ static mlt_properties find_default_streams( mlt_properties meta_media, AVFormatC
                                        *video_index = i;
                                mlt_properties_set( meta_media, key, "video" );
                                snprintf( key, sizeof(key), "meta.media.%d.stream.frame_rate", i );
+#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
+                               double ffmpeg_fps = av_q2d( context->streams[ i ]->avg_frame_rate );
+                               if (ffmpeg_fps == 0) ffmpeg_fps = av_q2d( context->streams[ i ]->r_frame_rate );
+                               mlt_properties_set_double( meta_media, key, ffmpeg_fps );
+#else
                                mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->r_frame_rate ) );
+#endif
+
 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
                                snprintf( key, sizeof(key), "meta.media.%d.stream.sample_aspect_ratio", i );
                                mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->sample_aspect_ratio ) );
@@ -254,6 +282,26 @@ static mlt_properties find_default_streams( mlt_properties meta_media, AVFormatC
                                mlt_properties_set( meta_media, key, avcodec_get_pix_fmt_name( codec_context->pix_fmt ) );
                                snprintf( key, sizeof(key), "meta.media.%d.codec.sample_aspect_ratio", i );
                                mlt_properties_set_double( meta_media, key, av_q2d( codec_context->sample_aspect_ratio ) );
+#if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
+                               snprintf( key, sizeof(key), "meta.media.%d.codec.colorspace", i );
+                               switch ( codec_context->colorspace )
+                               {
+                               case AVCOL_SPC_SMPTE240M:
+                                       mlt_properties_set_int( meta_media, key, 240 );
+                                       break;
+                               case AVCOL_SPC_BT470BG:
+                               case AVCOL_SPC_SMPTE170M:
+                                       mlt_properties_set_int( meta_media, key, 601 );
+                                       break;
+                               case AVCOL_SPC_BT709:
+                                       mlt_properties_set_int( meta_media, key, 709 );
+                                       break;
+                               default:
+                                       // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
+                                       mlt_properties_set_int( meta_media, key, codec_context->width * codec_context->height > 750000 ? 709 : 601 );
+                                       break;
+                               }
+#endif
                                break;
                        case CODEC_TYPE_AUDIO:
                                if ( *audio_index < 0 )
@@ -292,42 +340,6 @@ static mlt_properties find_default_streams( mlt_properties meta_media, AVFormatC
        return meta_media;
 }
 
-/** Producer file destructor.
-*/
-
-static void producer_format_close( void *context )
-{
-       if ( context )
-       {
-               // Lock the mutex now
-               avformat_lock( );
-
-               // Close the file
-               av_close_input_file( context );
-
-               // Unlock the mutex now
-               avformat_unlock( );
-       }
-}
-
-/** Producer file destructor.
-*/
-
-static void producer_codec_close( void *codec )
-{
-       if ( codec )
-       {
-               // Lock the mutex now
-               avformat_lock( );
-
-               // Close the file
-               avcodec_close( codec );
-
-               // Unlock the mutex now
-               avformat_unlock( );
-       }
-}
-
 static inline int dv_is_pal( AVPacket *pkt )
 {
        return pkt->data[3] & 0x80;
@@ -348,7 +360,7 @@ static int dv_is_wide( AVPacket *pkt )
        return 0;
 }
 
-static double get_aspect_ratio( AVStream *stream, AVCodecContext *codec_context, AVPacket *pkt )
+static double get_aspect_ratio( mlt_properties properties, AVStream *stream, AVCodecContext *codec_context, AVPacket *pkt )
 {
        double aspect_ratio = 1.0;
 
@@ -358,15 +370,29 @@ static double get_aspect_ratio( AVStream *stream, AVCodecContext *codec_context,
                {
                        if ( dv_is_pal( pkt ) )
                        {
-                               aspect_ratio = dv_is_wide( pkt )
-                                       ? 64.0/45.0 // 16:9 PAL
-                                       : 16.0/15.0; // 4:3 PAL
+                               if ( dv_is_wide( pkt ) )
+                               {
+                                       mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
+                                       mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
+                               }
+                               else
+                               {
+                                       mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
+                                       mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
+                               }
                        }
                        else
                        {
-                               aspect_ratio = dv_is_wide( pkt )
-                                       ? 32.0/27.0 // 16:9 NTSC
-                                       : 8.0/9.0; // 4:3 NTSC
+                               if ( dv_is_wide( pkt ) )
+                               {
+                                       mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
+                                       mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
+                               }
+                               else
+                               {
+                                       mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
+                                       mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
+                               }
                        }
                }
                else
@@ -384,13 +410,29 @@ static double get_aspect_ratio( AVStream *stream, AVCodecContext *codec_context,
                        // the rescale normaliser when using equivalent producers and consumers.
                        // = display_aspect / (width * height)
                        if ( ar.num == 10 && ar.den == 11 )
-                               aspect_ratio = 8.0/9.0; // 4:3 NTSC
+                       {
+                               // 4:3 NTSC
+                               mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
+                               mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
+                       }
                        else if ( ar.num == 59 && ar.den == 54 )
-                               aspect_ratio = 16.0/15.0; // 4:3 PAL
+                       {
+                               // 4:3 PAL
+                               mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
+                               mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
+                       }
                        else if ( ar.num == 40 && ar.den == 33 )
-                               aspect_ratio = 32.0/27.0; // 16:9 NTSC
+                       {
+                               // 16:9 NTSC
+                               mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
+                               mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
+                       }
                        else if ( ar.num == 118 && ar.den == 81 )
-                               aspect_ratio = 64.0/45.0; // 16:9 PAL
+                       {
+                               // 16:9 PAL
+                               mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
+                               mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
+                       }
                }
        }
        else
@@ -403,10 +445,25 @@ static double get_aspect_ratio( AVStream *stream, AVCodecContext *codec_context,
                        { 0, 1 };
 #endif
                if ( codec_sar.num > 0 )
-                       aspect_ratio = av_q2d( codec_sar );
+               {
+                       mlt_properties_set_int( properties, "meta.media.sample_aspect_num", codec_sar.num );
+                       mlt_properties_set_int( properties, "meta.media.sample_aspect_den", codec_sar.den );
+               }
                else if ( stream_sar.num > 0 )
-                       aspect_ratio = av_q2d( stream_sar );
+               {
+                       mlt_properties_set_int( properties, "meta.media.sample_aspect_num", stream_sar.num );
+                       mlt_properties_set_int( properties, "meta.media.sample_aspect_den", stream_sar.den );
+               }
+               else
+               {
+                       mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 1 );
+                       mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 1 );
+               }
        }
+       AVRational ar = { mlt_properties_get_double( properties, "meta.media.sample_aspect_num" ), mlt_properties_get_double( properties, "meta.media.sample_aspect_den" ) };
+       aspect_ratio = av_q2d( ar );
+       mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
+
        return aspect_ratio;
 }
 
@@ -422,7 +479,7 @@ static int producer_open( producer_avformat this, mlt_profile profile, char *fil
        AVFormatContext *context = NULL;
 
        // Get the properties
-       mlt_properties properties = MLT_PRODUCER_PROPERTIES( &this->parent );
+       mlt_properties properties = MLT_PRODUCER_PROPERTIES( this->parent );
 
        // We will treat everything with the producer fps
        double fps = mlt_profile_fps( profile );
@@ -465,8 +522,6 @@ static int producer_open( producer_avformat this, mlt_profile profile, char *fil
                        params->sample_rate = 48000;
                }
 
-               // XXX: this does not work anymore since avdevice
-               // TODO: make producer_avddevice?
                // Parse out params
                mrl = strchr( file, '?' );
                while ( mrl )
@@ -543,6 +598,7 @@ static int producer_open( producer_avformat this, mlt_profile profile, char *fil
 
                        // Check if we're seekable (something funny about mpeg here :-/)
                        if ( strncmp( file, "pipe:", 5 ) &&
+                                strncmp( file, "/dev/", 5 ) &&
                                 strncmp( file, "http:", 5 ) &&
                                 strncmp( file, "udp:", 4 )  &&
                                 strncmp( file, "tcp:", 4 )  &&
@@ -551,7 +607,6 @@ static int producer_open( producer_avformat this, mlt_profile profile, char *fil
                        {
                                this->seekable = av_seek_frame( context, -1, this->start_time, AVSEEK_FLAG_BACKWARD ) >= 0;
                                mlt_properties_set_int( properties, "seekable", this->seekable );
-                               producer_format_close( this->dummy_context );
                                this->dummy_context = context;
                                av_open_input_file( &context, file, NULL, 0, NULL );
                                av_find_stream_info( context );
@@ -580,17 +635,23 @@ static int producer_open( producer_avformat this, mlt_profile profile, char *fil
                                                ret = av_read_frame( context, &pkt );
                                                if ( ret >= 0 && pkt.stream_index == video_index && pkt.size > 0 )
                                                {
-                                                       mlt_properties_set_double( properties, "aspect_ratio",
-                                                               get_aspect_ratio( context->streams[ video_index ], codec_context, &pkt ) );
+                                                       get_aspect_ratio( properties, context->streams[ video_index ], codec_context, &pkt );
                                                        break;
                                                }
                                        }
                                }
                                else
                                {
-                                       mlt_properties_set_double( properties, "aspect_ratio",
-                                               get_aspect_ratio( context->streams[ video_index ], codec_context, NULL ) );
+                                       get_aspect_ratio( properties, context->streams[ video_index ], codec_context, NULL );
                                }
+#ifdef SWSCALE
+                               struct SwsContext *context = sws_getContext( codec_context->width, codec_context->height, codec_context->pix_fmt,
+                                       codec_context->width, codec_context->height, PIX_FMT_YUYV422, SWS_BILINEAR, NULL, NULL, NULL);
+                               if ( context )
+                                       sws_freeContext( context );
+                               else
+                                       error = 1;
+#endif
                        }
 
                        // Read Metadata
@@ -613,9 +674,6 @@ static int producer_open( producer_avformat this, mlt_profile profile, char *fil
                        if ( av == 0 && audio_index != -1 && video_index != -1 )
                        {
                                // We'll use the open one as our video_format
-                               avformat_unlock();
-                               producer_format_close( this->video_format );
-                               avformat_lock();
                                this->video_format = context;
 
                                // And open again for our audio context
@@ -623,25 +681,16 @@ static int producer_open( producer_avformat this, mlt_profile profile, char *fil
                                av_find_stream_info( context );
 
                                // Audio context
-                               avformat_unlock();
-                               producer_format_close( this->audio_format );
-                               avformat_lock();
                                this->audio_format = context;
                        }
                        else if ( av != 2 && video_index != -1 )
                        {
                                // We only have a video context
-                               avformat_unlock();
-                               producer_format_close( this->video_format );
-                               avformat_lock();
                                this->video_format = context;
                        }
                        else if ( audio_index != -1 )
                        {
                                // We only have an audio context
-                               avformat_unlock();
-                               producer_format_close( this->audio_format );
-                               avformat_lock();
                                this->audio_format = context;
                        }
                        else
@@ -701,18 +750,67 @@ static void get_audio_streams_info( producer_avformat this )
        }
        mlt_log_verbose( NULL, "[producer avformat] audio: total_streams %d max_stream %d total_channels %d max_channels %d\n",
                this->audio_streams, this->audio_max_stream, this->total_channels, this->max_channel );
+       
+       // Other audio-specific initializations
+       this->resample_factor = 1.0;
 }
 
-static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt, mlt_image_format *format, int width, int height )
+static void set_luma_transfer( struct SwsContext *context, int colorspace, int use_full_range )
+{
+#if defined(SWSCALE) && (LIBSWSCALE_VERSION_INT >= ((0<<16)+(7<<8)+2))
+       int *coefficients;
+       int full_range;
+       int brightness, contrast, saturation;
+
+       if ( sws_getColorspaceDetails( context, &coefficients, &full_range, &coefficients, &full_range,
+                       &brightness, &contrast, &saturation ) != -1 )
+       {
+               // Don't change these from defaults unless explicitly told to.
+               if ( use_full_range >= 0 )
+                       full_range = use_full_range;
+               switch ( colorspace )
+               {
+               case 170:
+               case 470:
+               case 601:
+               case 624:
+                       coefficients = sws_getCoefficients( SWS_CS_ITU601 );
+                       break;
+               case 240:
+                       coefficients = sws_getCoefficients( SWS_CS_SMPTE240M );
+                       break;
+               case 709:
+                       coefficients = sws_getCoefficients( SWS_CS_ITU709 );
+                       break;
+               }
+               sws_setColorspaceDetails( context, coefficients, full_range, coefficients, full_range,
+                       brightness, contrast, saturation );
+       }
+#endif
+}
+
+static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt,
+       mlt_image_format *format, int width, int height, int colorspace )
 {
 #ifdef SWSCALE
+       int full_range = -1;
+       int flags = SWS_BILINEAR | SWS_ACCURATE_RND;
+
+#ifdef USE_MMX
+       flags |= SWS_CPU_CAPS_MMX;
+#endif
+#ifdef USE_SSE
+       flags |= SWS_CPU_CAPS_MMX2;
+#endif
+
        if ( pix_fmt == PIX_FMT_RGB32 )
        {
                *format = mlt_image_rgb24a;
                struct SwsContext *context = sws_getContext( width, height, pix_fmt,
-                       width, height, PIX_FMT_RGBA, SWS_FAST_BILINEAR, NULL, NULL, NULL);
+                       width, height, PIX_FMT_RGBA, flags, NULL, NULL, NULL);
                AVPicture output;
                avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
+               set_luma_transfer( context, colorspace, full_range );
                sws_scale( context, frame->data, frame->linesize, 0, height,
                        output.data, output.linesize);
                sws_freeContext( context );
@@ -720,7 +818,7 @@ static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt,
        else if ( *format == mlt_image_yuv420p )
        {
                struct SwsContext *context = sws_getContext( width, height, pix_fmt,
-                       width, height, PIX_FMT_YUV420P, SWS_FAST_BILINEAR, NULL, NULL, NULL);
+                       width, height, PIX_FMT_YUV420P, flags, NULL, NULL, NULL);
                AVPicture output;
                output.data[0] = buffer;
                output.data[1] = buffer + width * height;
@@ -728,6 +826,7 @@ static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt,
                output.linesize[0] = width;
                output.linesize[1] = width >> 1;
                output.linesize[2] = width >> 1;
+               set_luma_transfer( context, colorspace, full_range );
                sws_scale( context, frame->data, frame->linesize, 0, height,
                        output.data, output.linesize);
                sws_freeContext( context );
@@ -735,9 +834,10 @@ static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt,
        else if ( *format == mlt_image_rgb24 )
        {
                struct SwsContext *context = sws_getContext( width, height, pix_fmt,
-                       width, height, PIX_FMT_RGB24, SWS_FAST_BILINEAR, NULL, NULL, NULL);
+                       width, height, PIX_FMT_RGB24, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
                AVPicture output;
                avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
+               set_luma_transfer( context, colorspace, full_range );
                sws_scale( context, frame->data, frame->linesize, 0, height,
                        output.data, output.linesize);
                sws_freeContext( context );
@@ -745,9 +845,10 @@ static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt,
        else if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl )
        {
                struct SwsContext *context = sws_getContext( width, height, pix_fmt,
-                       width, height, PIX_FMT_RGBA, SWS_FAST_BILINEAR, NULL, NULL, NULL);
+                       width, height, PIX_FMT_RGBA, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
                AVPicture output;
                avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
+               set_luma_transfer( context, colorspace, full_range );
                sws_scale( context, frame->data, frame->linesize, 0, height,
                        output.data, output.linesize);
                sws_freeContext( context );
@@ -755,9 +856,10 @@ static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt,
        else
        {
                struct SwsContext *context = sws_getContext( width, height, pix_fmt,
-                       width, height, PIX_FMT_YUYV422, SWS_FAST_BILINEAR, NULL, NULL, NULL);
+                       width, height, PIX_FMT_YUYV422, flags | SWS_FULL_CHR_H_INP, NULL, NULL, NULL);
                AVPicture output;
                avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
+               set_luma_transfer( context, colorspace, full_range );
                sws_scale( context, frame->data, frame->linesize, 0, height,
                        output.data, output.linesize);
                sws_freeContext( context );
@@ -807,8 +909,6 @@ static int allocate_buffer( mlt_properties frame_properties, AVCodecContext *cod
 
        *width = codec_context->width;
        *height = codec_context->height;
-       mlt_properties_set_int( frame_properties, "width", *width );
-       mlt_properties_set_int( frame_properties, "height", *height );
 
        if ( codec_context->pix_fmt == PIX_FMT_RGB32 )
                size = *width * ( *height + 1 ) * 4;
@@ -847,7 +947,8 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
 {
        // Get the producer
        producer_avformat this = mlt_frame_pop_service( frame );
-       mlt_producer producer = &this->parent;
+       mlt_service_lock( MLT_PRODUCER_SERVICE(this->parent) );
+       mlt_producer producer = this->parent;
 
        // Get the properties from the frame
        mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
@@ -858,8 +959,6 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
        // Get the producer properties
        mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 
-       avformat_lock();
-
        // Fetch the video format context
        AVFormatContext *context = this->video_format;
 
@@ -869,6 +968,55 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
        // Get codec context
        AVCodecContext *codec_context = stream->codec;
 
+       // Get the image cache
+       if ( ! this->image_cache && ! mlt_properties_get_int( properties, "noimagecache" ) )
+               this->image_cache = mlt_cache_init();
+       if ( this->image_cache )
+       {
+               mlt_cache_item item = mlt_cache_get( this->image_cache, (void*) position );
+               *buffer = mlt_cache_item_data( item, (int*) format );
+               if ( *buffer )
+               {
+                       // Set the resolution
+                       *width = codec_context->width;
+                       *height = codec_context->height;
+
+                       // Workaround 1088 encodings missing cropping info.
+                       if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
+                               *height = 1080;
+
+                       // Cache hit
+                       int size;
+                       switch ( *format )
+                       {
+                               case mlt_image_yuv420p:
+                                       size = *width * 3 * ( *height + 1 ) / 2;
+                                       break;
+                               case mlt_image_rgb24:
+                                       size = *width * ( *height + 1 ) * 3;
+                                       break;
+                               case mlt_image_rgb24a:
+                               case mlt_image_opengl:
+                                       size = *width * ( *height + 1 ) * 4;
+                                       break;
+                               default:
+                                       *format = mlt_image_yuv422;
+                                       size = *width * ( *height + 1 ) * 2;
+                                       break;
+                       }
+                       mlt_properties_set_data( frame_properties, "avformat.image_cache", item, 0, ( mlt_destructor )mlt_cache_item_close, NULL );
+                       mlt_properties_set_data( frame_properties, "image", *buffer, size, NULL, NULL );
+                       // this->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
+                       this->got_picture = 1;
+
+                       goto exit_get_image;
+               }
+       }
+       // Cache miss
+       int image_size = 0;
+
+       avformat_lock();
+
        // Packet
        AVPacket pkt;
 
@@ -879,7 +1027,8 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
        int ignore = 0;
 
        // We may want to use the source fps if available
-       double source_fps = mlt_properties_get_double( properties, "source_fps" );
+       double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
+               mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
        double fps = mlt_producer_get_fps( producer );
 
        // This is the physical frame position in the source
@@ -986,14 +1135,18 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
                }
        }
 
-       // Duplicate the last image if necessary (see comment on rawvideo below)
-       if ( this->av_frame && this->got_picture && this->seekable
+       // Duplicate the last image if necessary
+       if ( this->av_frame && this->av_frame->linesize[0] && this->got_picture && this->seekable
                 && ( paused
                          || this->current_position == req_position
                          || ( !use_new_seek && this->current_position > req_position ) ) )
        {
                // Duplicate it
-               if ( allocate_buffer( frame_properties, codec_context, buffer, format, width, height ) )
+               if ( ( image_size = allocate_buffer( frame_properties, codec_context, buffer, format, width, height ) ) )
+               {
+                       // Workaround 1088 encodings missing cropping info.
+                       if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
+                               *height = 1080;
 #ifdef VDPAU
                        if ( this->vdpau && this->vdpau->buffer )
                        {
@@ -1004,11 +1157,14 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
                                picture.linesize[0] = codec_context->width;
                                picture.linesize[1] = codec_context->width / 2;
                                picture.linesize[2] = codec_context->width / 2;
-                               convert_image( (AVFrame*) &picture, *buffer, PIX_FMT_YUV420P, format, *width, *height );
+                               convert_image( (AVFrame*) &picture, *buffer,
+                                       PIX_FMT_YUV420P, format, *width, *height, this->colorspace );
                        }
                        else
 #endif
-                       convert_image( this->av_frame, *buffer, codec_context->pix_fmt, format, *width, *height );
+                       convert_image( this->av_frame, *buffer, codec_context->pix_fmt,
+                               format, *width, *height, this->colorspace );
+               }
                else
                        mlt_frame_get_image( frame, buffer, format, width, height, writable );
        }
@@ -1132,7 +1288,7 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
                                                else if ( context->start_time != AV_NOPTS_VALUE )
                                                        pts -= context->start_time;
                                                int_position = ( int )( av_q2d( stream->time_base) * pts * source_fps + 0.1 );
-                                               mlt_log_verbose( MLT_PRODUCER_SERVICE(producer), "got frame %d, key %d\n", int_position, this->av_frame->key_frame );
+                                               mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "got frame %d, key %d\n", int_position, this->av_frame->key_frame );
                                        }
                                        // Handle ignore
                                        if ( int_position < req_position )
@@ -1151,18 +1307,16 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
                                        }
                                }
                                mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " got_pic %d key %d\n", got_picture, pkt.flags & PKT_FLAG_KEY );
-                               av_free_packet( &pkt );
-                       }
-                       else if ( ret >= 0 )
-                       {
-                               av_free_packet( &pkt );
                        }
 
                        // Now handle the picture if we have one
                        if ( got_picture )
                        {
-                               if ( allocate_buffer( frame_properties, codec_context, buffer, format, width, height ) )
+                               if ( ( image_size = allocate_buffer( frame_properties, codec_context, buffer, format, width, height ) ) )
                                {
+                                       // Workaround 1088 encodings missing cropping info.
+                                       if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
+                                               *height = 1080;
 #ifdef VDPAU
                                        if ( this->vdpau )
                                        {
@@ -1186,7 +1340,8 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
                                                        VdpStatus status = vdp_surface_get_bits( render->surface, dest_format, planes, pitches );
                                                        if ( status == VDP_STATUS_OK )
                                                        {
-                                                               convert_image( (AVFrame*) &picture, *buffer, PIX_FMT_YUV420P, format, *width, *height );
+                                                               convert_image( (AVFrame*) &picture, *buffer, PIX_FMT_YUV420P,
+                                                                       format, *width, *height, this->colorspace );
                                                        }
                                                        else
                                                        {
@@ -1202,9 +1357,8 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
                                        }
                                        else
 #endif
-                                       convert_image( this->av_frame, *buffer, codec_context->pix_fmt, format, *width, *height );
-                                       if ( !mlt_properties_get( properties, "force_progressive" ) )
-                                               mlt_properties_set_int( frame_properties, "progressive", !this->av_frame->interlaced_frame );
+                                       convert_image( this->av_frame, *buffer, codec_context->pix_fmt,
+                                               format, *width, *height, this->colorspace );
                                        this->top_field_first |= this->av_frame->top_field_first;
                                        this->current_position = int_position;
                                        this->got_picture = 1;
@@ -1214,25 +1368,44 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form
                                        got_picture = 0;
                                }
                        }
+                       if ( ret >= 0 )
+                               av_free_packet( &pkt );
                }
-               if ( !got_picture )
-                       mlt_frame_get_image( frame, buffer, format, width, height, writable );
        }
 
-       // Very untidy - for rawvideo, the packet contains the frame, hence the free packet
-       // above will break the pause behaviour - so we wipe the frame now
-       if ( !strcmp( codec_context->codec->name, "rawvideo" ) )
-               av_freep( &this->av_frame );
-
        avformat_unlock();
 
-       // Set the field order property for this frame
-       mlt_properties_set_int( frame_properties, "top_field_first", this->top_field_first );
+       if ( this->got_picture && image_size > 0 && this->image_cache )
+       {
+               // Copy buffer to image cache   
+               uint8_t *image = mlt_pool_alloc( image_size );
+               memcpy( image, *buffer, image_size );
+               mlt_cache_put( this->image_cache, (void*) position, image, *format, mlt_pool_release );
+       }
 
        // Regardless of speed, we expect to get the next frame (cos we ain't too bright)
        this->video_expected = position + 1;
 
-       return 0;
+exit_get_image:
+       // Set the progressive flag
+       if ( mlt_properties_get( properties, "force_progressive" ) )
+               mlt_properties_set_int( frame_properties, "progressive", !!mlt_properties_get_int( properties, "force_progressive" ) );
+       else if ( this->av_frame )
+               mlt_properties_set_int( frame_properties, "progressive", !this->av_frame->interlaced_frame );
+
+       // Set the field order property for this frame
+       if ( mlt_properties_get( properties, "force_tff" ) )
+               mlt_properties_set_int( frame_properties, "top_field_first", !!mlt_properties_get_int( properties, "force_tff" ) );
+       else
+               mlt_properties_set_int( frame_properties, "top_field_first", this->top_field_first );
+
+       // Set immutable properties of the selected track's (or overridden) source attributes.
+       mlt_properties_set_int( properties, "meta.media.top_field_first", this->top_field_first );
+       mlt_properties_set_int( properties, "meta.media.progressive", mlt_properties_get_int( frame_properties, "progressive" ) );
+
+       mlt_service_unlock( MLT_PRODUCER_SERVICE(this->parent) );
+
+       return !this->got_picture;
 }
 
 /** Process properties as AVOptions and apply to AV context obj
@@ -1246,14 +1419,17 @@ static void apply_properties( void *obj, mlt_properties properties, int flags )
        {
                const char *opt_name = mlt_properties_get_name( properties, i );
                const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
-               if ( opt )
+               if ( opt_name && mlt_properties_get( properties, opt_name ) )
+               {
+                       if ( opt )
 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
-                       av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
+                               av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
-                       av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
+                               av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
 #else
-                       av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
+                               av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
 #endif
+               }
        }
 }
 
@@ -1320,7 +1496,9 @@ static int video_codec_init( producer_avformat this, int index, mlt_properties p
                // Reset some image properties
                mlt_properties_set_int( properties, "width", this->video_codec->width );
                mlt_properties_set_int( properties, "height", this->video_codec->height );
-               mlt_properties_set_double( properties, "aspect_ratio", get_aspect_ratio( stream, this->video_codec, NULL ) );
+               // For DV, we'll just use the saved aspect ratio
+               if ( codec_context->codec_id != CODEC_ID_DVVIDEO )
+                       get_aspect_ratio( properties, stream, this->video_codec, NULL );
 
                // Determine the fps first from the codec
                double source_fps = (double) this->video_codec->time_base.den /
@@ -1329,21 +1507,82 @@ static int video_codec_init( producer_avformat this, int index, mlt_properties p
                if ( mlt_properties_get( properties, "force_fps" ) )
                {
                        source_fps = mlt_properties_get_double( properties, "force_fps" );
-                       stream->time_base = av_d2q( source_fps, 255 );
+                       stream->time_base = av_d2q( source_fps, 1024 );
+                       mlt_properties_set_int( properties, "meta.media.frame_rate_num", stream->time_base.num );
+                       mlt_properties_set_int( properties, "meta.media.frame_rate_den", stream->time_base.den );
                }
                else
                {
                        // If the muxer reports a frame rate different than the codec
+#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
+                       double muxer_fps = av_q2d( stream->avg_frame_rate );
+                       if ( muxer_fps == 0 ) muxer_fps = av_q2d( stream->r_frame_rate );
+#else
                        double muxer_fps = av_q2d( stream->r_frame_rate );
+#endif
                        // Choose the lesser - the wrong tends to be off by some multiple of 10
                        source_fps = FFMIN( source_fps, muxer_fps );
+                       if ( source_fps >= 1.0 && ( source_fps < muxer_fps || isnan( muxer_fps ) ) )
+                       {
+                               mlt_properties_set_int( properties, "meta.media.frame_rate_num", this->video_codec->time_base.den );
+                               mlt_properties_set_int( properties, "meta.media.frame_rate_den", this->video_codec->time_base.num == 0 ? 1 : this->video_codec->time_base.num );
+                       }
+                       else if ( muxer_fps > 0 )
+                       {
+                               AVRational frame_rate = stream->r_frame_rate;
+                               // With my samples when r_frame_rate != 1000 but avg_frame_rate is valid,
+                               // avg_frame_rate gives some approximate value that does not well match the media.
+                               // Also, on my sample where r_frame_rate = 1000, using avg_frame_rate directly
+                               // results in some very choppy output, but some value slightly different works
+                               // great.
+#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
+                               if ( av_q2d( stream->r_frame_rate ) >= 1000 && av_q2d( stream->avg_frame_rate ) > 0 )
+                                       frame_rate = av_d2q( av_q2d( stream->avg_frame_rate ), 1024 );
+#endif
+                               mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
+                               mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
+                       }
+                       else
+                       {
+                               source_fps = mlt_producer_get_fps( this->parent );
+                               AVRational frame_rate = av_d2q( source_fps, 255 );
+                               mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
+                               mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
+                       }
                }
 
-               // We'll use fps if it's available
+               // source_fps is deprecated in favor of meta.media.frame_rate_num and .frame_rate_den
                if ( source_fps > 0 )
                        mlt_properties_set_double( properties, "source_fps", source_fps );
                else
-                       mlt_properties_set_double( properties, "source_fps", mlt_producer_get_fps( &this->parent ) );
+                       mlt_properties_set_double( properties, "source_fps", mlt_producer_get_fps( this->parent ) );
+
+               // Set the YUV colorspace from override or detect
+               this->colorspace = mlt_properties_get_int( properties, "force_colorspace" );
+#if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)              
+               if ( ! this->colorspace )
+               {
+                       switch ( this->video_codec->colorspace )
+                       {
+                       case AVCOL_SPC_SMPTE240M:
+                               this->colorspace = 240;
+                               break;
+                       case AVCOL_SPC_BT470BG:
+                       case AVCOL_SPC_SMPTE170M:
+                               this->colorspace = 601;
+                               break;
+                       case AVCOL_SPC_BT709:
+                               this->colorspace = 709;
+                               break;
+                       default:
+                               // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
+                               this->colorspace = this->video_codec->width * this->video_codec->height > 750000 ? 709 : 601;
+                               break;
+                       }
+               }
+#endif
+               // Let apps get chosen colorspace
+               mlt_properties_set_int( properties, "meta.media.colorspace", this->colorspace );
        }
        return this->video_codec && this->video_index > -1;
 }
@@ -1354,7 +1593,7 @@ static int video_codec_init( producer_avformat this, int index, mlt_properties p
 static void producer_set_up_video( producer_avformat this, mlt_frame frame )
 {
        // Get the producer
-       mlt_producer producer = &this->parent;
+       mlt_producer producer = this->parent;
 
        // Get the properties
        mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
@@ -1372,7 +1611,12 @@ static void producer_set_up_video( producer_avformat this, mlt_frame frame )
                producer_open( this, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
                        mlt_properties_get( properties, "resource" ) );
                context = this->video_format;
-               producer_format_close( this->dummy_context );
+               if ( this->dummy_context )
+               {
+                       avformat_lock();
+                       av_close_input_file( this->dummy_context );
+                       avformat_unlock();
+               }
                this->dummy_context = NULL;
                mlt_events_unblock( properties, producer );
                if ( this->audio_format )
@@ -1403,7 +1647,12 @@ static void producer_set_up_video( producer_avformat this, mlt_frame frame )
        {
                // Reset the video properties if the index changed
                this->video_index = index;
-               producer_codec_close( this->video_codec );
+               if ( this->video_codec )
+               {
+                       avformat_lock();
+                       avcodec_close( this->video_codec );
+                       avformat_unlock();
+               }
                this->video_codec = NULL;
        }
 
@@ -1421,11 +1670,20 @@ static void producer_set_up_video( producer_avformat this, mlt_frame frame )
                // Set the width and height
                mlt_properties_set_int( frame_properties, "width", this->video_codec->width );
                mlt_properties_set_int( frame_properties, "height", this->video_codec->height );
+               // real_width and real_height are deprecated in favor of meta.media.width and .height
+               mlt_properties_set_int( properties, "meta.media.width", this->video_codec->width );
+               mlt_properties_set_int( properties, "meta.media.height", this->video_codec->height );
                mlt_properties_set_int( frame_properties, "real_width", this->video_codec->width );
                mlt_properties_set_int( frame_properties, "real_height", this->video_codec->height );
                mlt_properties_set_double( frame_properties, "aspect_ratio", aspect_ratio );
-               if ( mlt_properties_get( properties, "force_progressive" ) )
-                       mlt_properties_set_int( frame_properties, "progressive", mlt_properties_get_int( properties, "force_progressive" ) );
+               mlt_properties_set_int( frame_properties, "colorspace", this->colorspace );
+
+               // Workaround 1088 encodings missing cropping info.
+               if ( this->video_codec->height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
+               {
+                       mlt_properties_set_int( properties, "meta.media.height", 1080 );
+                       mlt_properties_set_int( frame_properties, "real_height", 1080 );
+               }
 
                // Add our image operation
                mlt_frame_push_service( frame, this );
@@ -1442,9 +1700,6 @@ static int seek_audio( producer_avformat this, mlt_position position, double tim
 {
        int paused = 0;
 
-       // Fetch the audio_format
-       AVFormatContext *context = this->audio_format;
-
        // Seek if necessary
        if ( position != this->audio_expected )
        {
@@ -1460,6 +1715,7 @@ static int seek_audio( producer_avformat this, mlt_position position, double tim
                }
                else if ( position < this->audio_expected || position - this->audio_expected >= 12 )
                {
+                       AVFormatContext *context = this->audio_format;
                        int64_t timestamp = ( int64_t )( timecode * AV_TIME_BASE + 0.5 );
                        if ( context->start_time != AV_NOPTS_VALUE )
                                timestamp += context->start_time;
@@ -1467,8 +1723,10 @@ static int seek_audio( producer_avformat this, mlt_position position, double tim
                                timestamp = 0;
 
                        // Set to the real timecode
+                       avformat_lock();
                        if ( av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD ) != 0 )
                                paused = 1;
+                       avformat_unlock();
 
                        // Clear the usage in the audio buffer
                        int i = MAX_AUDIO_STREAMS + 1;
@@ -1479,13 +1737,13 @@ static int seek_audio( producer_avformat this, mlt_position position, double tim
        return paused;
 }
 
-static int decode_audio( producer_avformat this, int *ignore, AVPacket *pkt, int channels, int samples, double timecode, double source_fps )
+static int decode_audio( producer_avformat this, int *ignore, AVPacket pkt, int channels, int samples, double timecode, double fps )
 {
        // Fetch the audio_format
        AVFormatContext *context = this->audio_format;
 
        // Get the current stream index
-       int index = pkt->stream_index;
+       int index = pkt.stream_index;
 
        // Get codec context
        AVCodecContext *codec_context = this->audio_codec[ index ];
@@ -1498,8 +1756,8 @@ static int decode_audio( producer_avformat this, int *ignore, AVPacket *pkt, int
        int16_t *decode_buffer = this->decode_buffer[ index ];
 
        int audio_used = this->audio_used[ index ];
-       uint8_t *ptr = pkt->data;
-       int len = pkt->size;
+       uint8_t *ptr = pkt.data;
+       int len = pkt.size;
        int ret = 0;
 
        while ( ptr && ret >= 0 && len > 0 )
@@ -1508,7 +1766,7 @@ static int decode_audio( producer_avformat this, int *ignore, AVPacket *pkt, int
 
                // Decode the audio
 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
-               ret = avcodec_decode_audio3( codec_context, decode_buffer, &data_size, pkt );
+               ret = avcodec_decode_audio3( codec_context, decode_buffer, &data_size, &pkt );
 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(29<<8)+0))
                ret = avcodec_decode_audio2( codec_context, decode_buffer, &data_size, ptr, len );
 #else
@@ -1516,12 +1774,12 @@ static int decode_audio( producer_avformat this, int *ignore, AVPacket *pkt, int
 #endif
                if ( ret < 0 )
                {
-                       ret = 0;
+                       mlt_log_warning( MLT_PRODUCER_SERVICE(this->parent), "audio decoding error %d\n", ret );
                        break;
                }
 
-               len -= ret;
-               ptr += ret;
+               pkt.size = len -= ret;
+               pkt.data = ptr += ret;
 
                // If decoded successfully
                if ( data_size > 0 )
@@ -1541,7 +1799,9 @@ static int decode_audio( producer_avformat this, int *ignore, AVPacket *pkt, int
                                // Copy to audio buffer while resampling
                                int16_t *source = decode_buffer;
                                int16_t *dest = &audio_buffer[ audio_used * channels ];
+                               avformat_lock();
                                audio_used += audio_resample( resample, dest, source, convert_samples );
+                               avformat_unlock();
                        }
                        else
                        {
@@ -1562,16 +1822,23 @@ static int decode_audio( producer_avformat this, int *ignore, AVPacket *pkt, int
        }
 
        // If we're behind, ignore this packet
-       if ( pkt->pts >= 0 )
+       if ( pkt.pts >= 0 )
        {
-               double current_pts = av_q2d( context->streams[ index ]->time_base ) * pkt->pts;
-               int req_position = ( int )( timecode * source_fps + 0.5 );
-               int int_position = ( int )( current_pts * source_fps + 0.5 );
-
+               double current_pts = av_q2d( context->streams[ index ]->time_base ) * pkt.pts;
+               int req_position = ( int )( timecode * fps + 0.5 );
+               int int_position = ( int )( current_pts * fps + 0.5 );
                if ( context->start_time != AV_NOPTS_VALUE )
-                       int_position -= ( int )( source_fps * context->start_time / AV_TIME_BASE + 0.5 );
-               if ( this->seekable && *ignore == 0 && int_position < req_position )
-                       *ignore = 1;
+                       int_position -= ( int )( fps * context->start_time / AV_TIME_BASE + 0.5 );
+
+               if ( this->seekable && *ignore == 0 )
+               {
+                       if ( int_position < req_position )
+                               // We are behind, so skip some
+                               *ignore = 1;
+                       else if ( int_position > req_position + 2 )
+                               // We are ahead, so seek backwards some more
+                               seek_audio( this, req_position, timecode - 1.0, ignore );
+               }
        }
 
        this->audio_used[ index ] = audio_used;
@@ -1587,14 +1854,16 @@ static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format
        // Get the producer
        producer_avformat this = mlt_frame_pop_audio( frame );
 
+       mlt_service_lock( MLT_PRODUCER_SERVICE(this->parent) );
+       
        // Obtain the frame number of this frame
        mlt_position position = mlt_properties_get_position( MLT_FRAME_PROPERTIES( frame ), "avformat_position" );
 
        // Calculate the real time code
-       double real_timecode = producer_time_of_frame( &this->parent, position );
+       double real_timecode = producer_time_of_frame( this->parent, position );
 
-       // Get the source fps
-       double source_fps = mlt_properties_get_double( MLT_PRODUCER_PROPERTIES( &this->parent ), "source_fps" );
+       // Get the producer fps
+       double fps = mlt_producer_get_fps( this->parent );
 
        // Number of frames to ignore (for ffwd)
        int ignore = 0;
@@ -1667,6 +1936,12 @@ static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format
                AVPacket pkt;
 
                av_init_packet( &pkt );
+               
+               // If not resampling, give consumer more than requested.
+               // It requested number samples based on requested frame rate.
+               // Do not clean this up with a samples *= ...!
+               if ( this->audio_index != INT_MAX && ! this->audio_resample[ this->audio_index ] )
+                       *samples = *samples * this->audio_codec[ this->audio_index ]->sample_rate / *frequency;
 
                while ( ret >= 0 && !got_audio )
                {
@@ -1678,12 +1953,17 @@ static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format
                        }
 
                        // Read a packet
+                       avformat_lock();
                        ret = av_read_frame( context, &pkt );
+                       avformat_unlock();
 
                        // We only deal with audio from the selected audio index
                        if ( ret >= 0 && pkt.data && pkt.size > 0 && ( pkt.stream_index == this->audio_index ||
                                 ( this->audio_index == INT_MAX && context->streams[ pkt.stream_index ]->codec->codec_type == CODEC_TYPE_AUDIO ) ) )
-                               ret = decode_audio( this, &ignore, &pkt, *channels, *samples, real_timecode, source_fps );
+                       {
+                               int channels2 = this->audio_index == INT_MAX ? this->audio_codec[pkt.stream_index]->channels : *channels;
+                               ret = decode_audio( this, &ignore, pkt, channels2, *samples, real_timecode, fps );
+                       }
                        av_free_packet( &pkt );
 
                        if ( this->audio_index == INT_MAX && ret >= 0 )
@@ -1697,7 +1977,7 @@ static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format
                                }
                        }
                }
-
+               
                // Allocate and set the frame's audio buffer
                int size = *samples * *channels * sizeof(int16_t);
                *buffer = mlt_pool_alloc( size );
@@ -1721,7 +2001,7 @@ static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format
                                }
                        }
                        for ( index = 0; index < index_max; index++ )
-                       if ( this->audio_codec[ index ] )
+                       if ( this->audio_codec[ index ] && this->audio_used[ index ] >= *samples )
                        {
                                int current_channels = this->audio_codec[ index ]->channels;
                                int16_t *src = this->audio_buffer[ index ] + *samples * current_channels;
@@ -1735,9 +2015,10 @@ static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format
                        index = this->audio_index;
 
                        // Now handle the audio if we have enough
-                       if ( this->audio_used[ index ] >= *samples )
+                       if ( this->audio_used[ index ] > 0 )
                        {
                                int16_t *src = this->audio_buffer[ index ];
+                               *samples = this->audio_used[ index ] < *samples ? this->audio_used[ index ] : *samples;
                                memcpy( *buffer, src, *samples * *channels * sizeof(int16_t) );
                                this->audio_used[ index ] -= *samples;
                                memmove( src, &src[ *samples * *channels ], this->audio_used[ index ] * *channels * sizeof(int16_t) );
@@ -1760,11 +2041,13 @@ static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format
                // Get silence and don't touch the context
                mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples );
        }
-
+       
        // Regardless of speed (other than paused), we expect to get the next frame
        if ( !paused )
                this->audio_expected = position + 1;
 
+       mlt_service_unlock( MLT_PRODUCER_SERVICE(this->parent) );
+
        return 0;
 }
 
@@ -1787,16 +2070,16 @@ static int audio_codec_init( producer_avformat this, int index, mlt_properties p
                if ( codec && avcodec_open( codec_context, codec ) >= 0 )
                {
                        // Now store the codec with its destructor
-                       avformat_unlock();
-                       producer_codec_close( this->audio_codec[index] );
+                       if ( this->audio_codec[ index ] )
+                               avcodec_close( this->audio_codec[ index ] );
                        this->audio_codec[ index ] = codec_context;
                }
                else
                {
                        // Remember that we can't use this later
                        this->audio_index = -1;
-                       avformat_unlock( );
                }
+               avformat_unlock( );
 
                // Process properties as AVOptions
                apply_properties( codec_context, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
@@ -1810,7 +2093,7 @@ static int audio_codec_init( producer_avformat this, int index, mlt_properties p
 static void producer_set_up_audio( producer_avformat this, mlt_frame frame )
 {
        // Get the producer
-       mlt_producer producer = &this->parent;
+       mlt_producer producer = this->parent;
 
        // Get the properties
        mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
@@ -1824,18 +2107,24 @@ static void producer_set_up_audio( producer_avformat this, mlt_frame frame )
        int index = mlt_properties_get_int( properties, "audio_index" );
 
        // Handle all audio tracks
-       if ( mlt_properties_get( properties, "audio_index" ) &&
-                !strcmp( mlt_properties_get( properties, "audio_index" ), "all" ) )
+       if ( this->audio_index > -1 &&
+            mlt_properties_get( properties, "audio_index" ) &&
+            !strcmp( mlt_properties_get( properties, "audio_index" ), "all" ) )
                index = INT_MAX;
 
        // Reopen the file if necessary
-       if ( !context && index > -1 )
+       if ( !context && this->audio_index > -1 && index > -1 )
        {
                mlt_events_block( properties, producer );
                producer_open( this, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
                        mlt_properties_get( properties, "resource" ) );
                context = this->audio_format;
-               producer_format_close( this->dummy_context );
+               if ( this->dummy_context )
+               {
+                       avformat_lock();
+                       av_close_input_file( this->dummy_context );
+                       avformat_unlock();
+               }
                this->dummy_context = NULL;
                mlt_events_unblock( properties, producer );
                get_audio_streams_info( this );
@@ -1852,17 +2141,25 @@ static void producer_set_up_audio( producer_avformat this, mlt_frame frame )
        if ( context && index > -1 && index < INT_MAX &&
                 context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO )
        {
-               index = -1;
+               index = this->audio_index;
                mlt_properties_set_int( properties, "audio_index", index );
        }
 
        // Update the audio properties if the index changed
-       if ( index > -1 && index != this->audio_index )
+       if ( context && index > -1 && index != this->audio_index )
        {
-               producer_codec_close( this->audio_codec[ this->audio_index ] );
+               if ( this->audio_codec[ this->audio_index ] )
+               {
+                       avformat_lock();
+                       avcodec_close( this->audio_codec[ this->audio_index ] );
+                       avformat_unlock();
+               }
                this->audio_codec[ this->audio_index ] = NULL;
        }
-       this->audio_index = index;
+       if ( this->audio_index != -1 )
+               this->audio_index = index;
+       else
+               index = -1;
 
        // Get the codec(s)
        if ( context && index == INT_MAX )
@@ -1898,17 +2195,39 @@ static void producer_set_up_audio( producer_avformat this, mlt_frame frame )
 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
 {
        // Access the private data
-       producer_avformat this = producer->child;
+       mlt_service service = MLT_PRODUCER_SERVICE( producer );
+       mlt_cache_item cache_item = mlt_service_cache_get( service, "producer_avformat" );
+       producer_avformat this = mlt_cache_item_data( cache_item, NULL );
+
+       // If cache miss
+       if ( !this )
+       {
+               this = calloc( 1, sizeof( struct producer_avformat_s ) );
+               producer->child = this;
+               this->parent = producer;
+               mlt_service_cache_put( service, "producer_avformat", this, 0, (mlt_destructor) producer_avformat_close );
+               cache_item = mlt_service_cache_get( service, "producer_avformat" );
+       }
 
        // Create an empty frame
-       *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
+       *frame = mlt_frame_init( service);
+       
+       if ( *frame )
+       {
+               mlt_properties_set_data( MLT_FRAME_PROPERTIES(*frame), "avformat_cache", cache_item, 0, (mlt_destructor) mlt_cache_item_close, NULL );
+       }
+       else
+       {
+               mlt_cache_item_close( cache_item );
+               return 1;
+       }
 
        // Update timecode on the frame we're creating
        mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
 
        // Set the position of this producer
        mlt_properties_set_position( MLT_FRAME_PROPERTIES( *frame ), "avformat_position", mlt_producer_frame( producer ) );
-
+       
        // Set up the video
        producer_set_up_video( this, *frame );
 
@@ -1921,13 +2240,12 @@ static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int i
        return 0;
 }
 
-static void producer_close( mlt_producer parent )
+static void producer_avformat_close( producer_avformat this )
 {
-       // Obtain this
-       producer_avformat this = parent->child;
-
+       mlt_log_debug( NULL, "producer_avformat_close\n" );
        // Close the file
        av_free( this->av_frame );
+       avformat_lock();
        int i;
        for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
        {
@@ -1935,20 +2253,32 @@ static void producer_close( mlt_producer parent )
                        audio_resample_close( this->audio_resample[i] );
                mlt_pool_release( this->audio_buffer[i] );
                av_free( this->decode_buffer[i] );
-               producer_codec_close( this->audio_codec[i] );
+               if ( this->audio_codec[i] )
+                       avcodec_close( this->audio_codec[i] );
        }
-       producer_codec_close( this->video_codec );
-       producer_format_close( this->dummy_context );
-       producer_format_close( this->audio_format );
-       producer_format_close( this->video_format );
+       if ( this->video_codec )
+               avcodec_close( this->video_codec );
+       if ( this->dummy_context )
+               av_close_input_file( this->dummy_context );
+       if ( this->audio_format )
+               av_close_input_file( this->audio_format );
+       if ( this->video_format )
+               av_close_input_file( this->video_format );
+       avformat_unlock();
 #ifdef VDPAU
        vdpau_producer_close( this );
 #endif
+       if ( this->image_cache )
+               mlt_cache_close( this->image_cache );
+       free( this );
+}
 
+static void producer_close( mlt_producer parent )
+{
        // Close the parent
        parent->close = NULL;
        mlt_producer_close( parent );
 
        // Free the memory
-       free( this );
+       free( parent );
 }