]> git.sesse.net Git - mlt/blobdiff - src/modules/avformat/consumer_avformat.c
Prefer opening codec by name instead of by ID.
[mlt] / src / modules / avformat / consumer_avformat.c
index c9420fa0afa2f81c09e05ff9cb18bb0e20457b68..e1f5c6f2bddea94e59b8f7bbf145fed559184060 100644 (file)
@@ -23,6 +23,8 @@
 #include <framework/mlt_consumer.h>
 #include <framework/mlt_frame.h>
 #include <framework/mlt_profile.h>
+#include <framework/mlt_log.h>
+#include <framework/mlt_events.h>
 
 // System header files
 #include <stdio.h>
 #include <limits.h>
 #include <pthread.h>
 #include <sys/time.h>
-#include <math.h>
 #include <unistd.h>
 
 // avformat header files
-#include <avformat.h>
+#include <libavformat/avformat.h>
 #ifdef SWSCALE
-#include <swscale.h>
+#include <libswscale/swscale.h>
+#endif
+#include <libavcodec/opt.h>
+#if LIBAVUTIL_VERSION_INT >= ((50<<16)+(8<<8)+0)
+#include <libavutil/pixdesc.h>
 #endif
-#include <opt.h>
 
 #if LIBAVUTIL_VERSION_INT < (50<<16)
 #define PIX_FMT_RGB32 PIX_FMT_RGBA32
 #define PIX_FMT_YUYV422 PIX_FMT_YUV422
 #endif
 
+#define MAX_AUDIO_STREAMS (8)
+#define AUDIO_ENCODE_BUFFER_SIZE (48000 * 2 * MAX_AUDIO_STREAMS)
+#define AUDIO_BUFFER_SIZE (1024 * 42)
+#define VIDEO_BUFFER_SIZE (2048 * 1024)
+
+void avformat_lock( );
+void avformat_unlock( );
+
 //
 // This structure should be extended and made globally available in mlt
 //
@@ -63,99 +75,99 @@ typedef struct
 
 sample_fifo sample_fifo_init( int frequency, int channels )
 {
-       sample_fifo this = calloc( 1, sizeof( sample_fifo_s ) );
-       this->frequency = frequency;
-       this->channels = channels;
-       return this;
+       sample_fifo fifo = calloc( 1, sizeof( sample_fifo_s ) );
+       fifo->frequency = frequency;
+       fifo->channels = channels;
+       return fifo;
 }
 
 // sample_fifo_clear and check are temporarily aborted (not working as intended)
 
-void sample_fifo_clear( sample_fifo this, double time )
+void sample_fifo_clear( sample_fifo fifo, double time )
 {
-       int words = ( float )( time - this->time ) * this->frequency * this->channels;
-       if ( ( int )( ( float )time * 100 ) < ( int )( ( float )this->time * 100 ) && this->used > words && words > 0 )
+       int words = ( float )( time - fifo->time ) * fifo->frequency * fifo->channels;
+       if ( ( int )( ( float )time * 100 ) < ( int )( ( float )fifo->time * 100 ) && fifo->used > words && words > 0 )
        {
-               memmove( this->buffer, &this->buffer[ words ], ( this->used - words ) * sizeof( int16_t ) );
-               this->used -= words;
-               this->time = time;
+               memmove( fifo->buffer, &fifo->buffer[ words ], ( fifo->used - words ) * sizeof( int16_t ) );
+               fifo->used -= words;
+               fifo->time = time;
        }
-       else if ( ( int )( ( float )time * 100 ) != ( int )( ( float )this->time * 100 ) )
+       else if ( ( int )( ( float )time * 100 ) != ( int )( ( float )fifo->time * 100 ) )
        {
-               this->used = 0;
-               this->time = time;
+               fifo->used = 0;
+               fifo->time = time;
        }
 }
 
-void sample_fifo_check( sample_fifo this, double time )
+void sample_fifo_check( sample_fifo fifo, double time )
 {
-       if ( this->used == 0 )
+       if ( fifo->used == 0 )
        {
-               if ( ( int )( ( float )time * 100 ) < ( int )( ( float )this->time * 100 ) )
-                       this->time = time;
+               if ( ( int )( ( float )time * 100 ) < ( int )( ( float )fifo->time * 100 ) )
+                       fifo->time = time;
        }
 }
 
-void sample_fifo_append( sample_fifo this, int16_t *samples, int count )
+void sample_fifo_append( sample_fifo fifo, int16_t *samples, int count )
 {
-       if ( ( this->size - this->used ) < count )
+       if ( ( fifo->size - fifo->used ) < count )
        {
-               this->size += count * 5;
-               this->buffer = realloc( this->buffer, this->size * sizeof( int16_t ) );
+               fifo->size += count * 5;
+               fifo->buffer = realloc( fifo->buffer, fifo->size * sizeof( int16_t ) );
        }
 
-       memcpy( &this->buffer[ this->used ], samples, count * sizeof( int16_t ) );
-       this->used += count;
+       memcpy( &fifo->buffer[ fifo->used ], samples, count * sizeof( int16_t ) );
+       fifo->used += count;
 }
 
-int sample_fifo_used( sample_fifo this )
+int sample_fifo_used( sample_fifo fifo )
 {
-       return this->used;
+       return fifo->used;
 }
 
-int sample_fifo_fetch( sample_fifo this, int16_t *samples, int count )
+int sample_fifo_fetch( sample_fifo fifo, int16_t *samples, int count )
 {
-       if ( count > this->used )
-               count = this->used;
+       if ( count > fifo->used )
+               count = fifo->used;
 
-       memcpy( samples, this->buffer, count * sizeof( int16_t ) );
-       this->used -= count;
-       memmove( this->buffer, &this->buffer[ count ], this->used * sizeof( int16_t ) );
+       memcpy( samples, fifo->buffer, count * sizeof( int16_t ) );
+       fifo->used -= count;
+       memmove( fifo->buffer, &fifo->buffer[ count ], fifo->used * sizeof( int16_t ) );
 
-       this->time += ( double )count / this->channels / this->frequency;
+       fifo->time += ( double )count / fifo->channels / fifo->frequency;
 
        return count;
 }
 
-void sample_fifo_close( sample_fifo this )
+void sample_fifo_close( sample_fifo fifo )
 {
-       free( this->buffer );
-       free( this );
+       free( fifo->buffer );
+       free( fifo );
 }
 
 // Forward references.
-static int consumer_start( mlt_consumer this );
-static int consumer_stop( mlt_consumer this );
-static int consumer_is_stopped( mlt_consumer this );
+static int consumer_start( mlt_consumer consumer );
+static int consumer_stop( mlt_consumer consumer );
+static int consumer_is_stopped( mlt_consumer consumer );
 static void *consumer_thread( void *arg );
-static void consumer_close( mlt_consumer this );
+static void consumer_close( mlt_consumer consumer );
 
-/** Initialise the dv consumer.
+/** Initialise the consumer.
 */
 
 mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
 {
        // Allocate the consumer
-       mlt_consumer this = mlt_consumer_new( profile );
+       mlt_consumer consumer = mlt_consumer_new( profile );
 
        // If memory allocated and initialises without error
-       if ( this != NULL )
+       if ( consumer != NULL )
        {
                // Get properties from the consumer
-               mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
+               mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 
                // Assign close callback
-               this->close = consumer_close;
+               consumer->close = consumer_close;
 
                // Interpret the argument
                if ( arg != NULL )
@@ -183,55 +195,84 @@ mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
                mlt_properties_set_int( properties, "prefill", 1 );
 
                // Set up start/stop/terminated callbacks
-               this->start = consumer_start;
-               this->stop = consumer_stop;
-               this->is_stopped = consumer_is_stopped;
+               consumer->start = consumer_start;
+               consumer->stop = consumer_stop;
+               consumer->is_stopped = consumer_is_stopped;
+               
+               mlt_events_register( properties, "consumer-fatal-error", NULL );
        }
 
-       // Return this
-       return this;
+       // Return consumer
+       return consumer;
 }
 
 /** Start the consumer.
 */
 
-static int consumer_start( mlt_consumer this )
+static int consumer_start( mlt_consumer consumer )
 {
        // Get the properties
-       mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
+       mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
        int error = 0;
 
        // Report information about available muxers and codecs as YAML Tiny
        char *s = mlt_properties_get( properties, "f" );
        if ( s && strcmp( s, "list" ) == 0 )
        {
-               fprintf( stderr, "---\nformats:\n" );
+               mlt_properties doc = mlt_properties_new();
+               mlt_properties formats = mlt_properties_new();
+               char key[20];
                AVOutputFormat *format = NULL;
+               
+               mlt_properties_set_data( properties, "f", formats, 0, (mlt_destructor) mlt_properties_close, NULL );
+               mlt_properties_set_data( doc, "formats", formats, 0, NULL, NULL );
                while ( ( format = av_oformat_next( format ) ) )
-                       fprintf( stderr, "  - %s\n", format->name );
-               fprintf( stderr, "...\n" );
+               {
+                       snprintf( key, sizeof(key), "%d", mlt_properties_count( formats ) );
+                       mlt_properties_set( formats, key, format->name );
+               }
+               fprintf( stderr, "%s", mlt_properties_serialise_yaml( doc ) );
+               mlt_properties_close( doc );
                error = 1;
        }
        s = mlt_properties_get( properties, "acodec" );
        if ( s && strcmp( s, "list" ) == 0 )
        {
-               fprintf( stderr, "---\naudio_codecs:\n" );
+               mlt_properties doc = mlt_properties_new();
+               mlt_properties codecs = mlt_properties_new();
+               char key[20];
                AVCodec *codec = NULL;
+
+               mlt_properties_set_data( properties, "acodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
+               mlt_properties_set_data( doc, "audio_codecs", codecs, 0, NULL, NULL );
                while ( ( codec = av_codec_next( codec ) ) )
                        if ( codec->encode && codec->type == CODEC_TYPE_AUDIO )
-                               fprintf( stderr, "  - %s\n", codec->name );
-               fprintf( stderr, "...\n" );
+                       {
+                               snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
+                               mlt_properties_set( codecs, key, codec->name );
+                       }
+               fprintf( stderr, "%s", mlt_properties_serialise_yaml( doc ) );
+               mlt_properties_close( doc );
                error = 1;
        }
        s = mlt_properties_get( properties, "vcodec" );
        if ( s && strcmp( s, "list" ) == 0 )
        {
-               fprintf( stderr, "---\nvideo_codecs:\n" );
+               mlt_properties doc = mlt_properties_new();
+               mlt_properties codecs = mlt_properties_new();
+               char key[20];
                AVCodec *codec = NULL;
+
+               mlt_properties_set_data( properties, "vcodec", codecs, 0, (mlt_destructor) mlt_properties_close, NULL );
+               mlt_properties_set_data( doc, "video_codecs", codecs, 0, NULL, NULL );
                while ( ( codec = av_codec_next( codec ) ) )
                        if ( codec->encode && codec->type == CODEC_TYPE_VIDEO )
-                               fprintf( stderr, "  - %s\n", codec->name );
-               fprintf( stderr, "...\n" );
+                       {
+                               snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
+                               mlt_properties_set( codecs, key, codec->name );
+                       }
+               fprintf( stderr, "%s", mlt_properties_serialise_yaml( doc ) );
+               mlt_properties_close( doc );
                error = 1;
        }
 
@@ -259,7 +300,7 @@ static int consumer_start( mlt_consumer this )
                        }
                        else
                        {
-                               fprintf( stderr, "%s: Invalid size property %s - ignoring.\n", __FILE__, size );
+                               mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Invalid size property %s - ignoring.\n", size );
                        }
                }
                
@@ -271,7 +312,7 @@ static int consumer_start( mlt_consumer this )
 
                // We need to set these on the profile as well because the s property is
                // an alias to mlt properties that correspond to profile settings.
-               mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
+               mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
                if ( profile )
                {
                        profile->width = width;
@@ -306,7 +347,7 @@ static int consumer_start( mlt_consumer this )
                mlt_properties_set_int( properties, "running", 1 );
 
                // Create the thread
-               pthread_create( thread, NULL, consumer_thread, this );
+               pthread_create( thread, NULL, consumer_thread, consumer );
        }
        return error;
 }
@@ -314,10 +355,10 @@ static int consumer_start( mlt_consumer this )
 /** Stop the consumer.
 */
 
-static int consumer_stop( mlt_consumer this )
+static int consumer_stop( mlt_consumer consumer )
 {
        // Get the properties
-       mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
+       mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 
        // Check that we're running
        if ( mlt_properties_get_int( properties, "running" ) )
@@ -338,17 +379,17 @@ static int consumer_stop( mlt_consumer this )
 /** Determine if the consumer is stopped.
 */
 
-static int consumer_is_stopped( mlt_consumer this )
+static int consumer_is_stopped( mlt_consumer consumer )
 {
        // Get the properties
-       mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
+       mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
        return !mlt_properties_get_int( properties, "running" );
 }
 
 /** Process properties as AVOptions and apply to AV context obj
 */
 
-static void apply_properties( void *obj, mlt_properties properties, int flags )
+static void apply_properties( void *obj, mlt_properties properties, int flags, int alloc )
 {
        int i;
        int count = mlt_properties_count( properties ); 
@@ -358,9 +399,9 @@ static void apply_properties( void *obj, mlt_properties properties, int flags )
                const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
                if ( opt != NULL )
 #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), alloc, 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), alloc );
 #else
                        av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
 #endif
@@ -370,13 +411,13 @@ static void apply_properties( void *obj, mlt_properties properties, int flags )
 /** Add an audio output stream
 */
 
-static AVStream *add_audio_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
+static AVStream *add_audio_stream( mlt_consumer consumer, AVFormatContext *oc, int codec_id, int channels )
 {
        // Get the properties
-       mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
+       mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 
        // Create a new stream
-       AVStream *st = av_new_stream( oc, 1 );
+       AVStream *st = av_new_stream( oc, oc->nb_streams );
 
        // If created, then initialise from properties
        if ( st != NULL ) 
@@ -388,13 +429,16 @@ static AVStream *add_audio_stream( mlt_consumer this, AVFormatContext *oc, int c
 
                c->codec_id = codec_id;
                c->codec_type = CODEC_TYPE_AUDIO;
+               c->sample_fmt = SAMPLE_FMT_S16;
 
+#if 0 // disabled until some audio codecs are multi-threaded
                // Setup multi-threading
                int thread_count = mlt_properties_get_int( properties, "threads" );
                if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
                        thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
                if ( thread_count > 1 )
                        avcodec_thread_init( c, thread_count );         
+#endif
        
                if (oc->oformat->flags & AVFMT_GLOBALHEADER) 
                        c->flags |= CODEC_FLAG_GLOBAL_HEADER;
@@ -411,7 +455,14 @@ static AVStream *add_audio_stream( mlt_consumer this, AVFormatContext *oc, int c
                }
 
                // Process properties as AVOptions
-               apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
+               char *apre = mlt_properties_get( properties, "apre" );
+               if ( apre )
+               {
+                       mlt_properties p = mlt_properties_load( apre );
+                       apply_properties( c, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, 1 );
+                       mlt_properties_close( p );
+               }
+               apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, 0 );
 
                int audio_qscale = mlt_properties_get_int( properties, "aq" );
         if ( audio_qscale > QSCALE_NONE )
@@ -422,20 +473,21 @@ static AVStream *add_audio_stream( mlt_consumer this, AVFormatContext *oc, int c
 
                // Set parameters controlled by MLT
                c->sample_rate = mlt_properties_get_int( properties, "frequency" );
-               c->channels = mlt_properties_get_int( properties, "channels" );
+               c->time_base = ( AVRational ){ 1, c->sample_rate };
+               c->channels = channels;
 
                if ( mlt_properties_get( properties, "alang" ) != NULL )
                        strncpy( st->language, mlt_properties_get( properties, "alang" ), sizeof( st->language ) );
        }
        else
        {
-               fprintf( stderr, "%s: Could not allocate a stream for audio\n", __FILE__ );
+               mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for audio\n" );
        }
 
        return st;
 }
 
-static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size )
+static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size, const char *codec_name )
 {
        // We will return the audio input size from here
        int audio_input_frame_size = 0;
@@ -444,8 +496,14 @@ static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size
        AVCodecContext *c = st->codec;
 
        // Find the encoder
-       AVCodec *codec = avcodec_find_encoder( c->codec_id );
+       AVCodec *codec;
+       if ( codec_name )
+               codec = avcodec_find_encoder_by_name( codec_name );
+       else
+               codec = avcodec_find_encoder( c->codec_id );
 
+       avformat_lock();
+       
        // Continue if codec found and we can open it
        if ( codec != NULL && avcodec_open( c, codec ) >= 0 )
        {
@@ -472,34 +530,41 @@ static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size
                }
 
                // Some formats want stream headers to be seperate (hmm)
-               if( !strcmp( oc->oformat->name, "mp4" ) || 
-                       !strcmp( oc->oformat->name, "mov" ) || 
-                       !strcmp( oc->oformat->name, "3gp" ) )
+               if ( !strcmp( oc->oformat->name, "mp4" ) ||
+                        !strcmp( oc->oformat->name, "mov" ) ||
+                        !strcmp( oc->oformat->name, "3gp" ) )
                        c->flags |= CODEC_FLAG_GLOBAL_HEADER;
        }
        else
        {
-               fprintf( stderr, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
+               mlt_log_warning( NULL, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
        }
+       
+       avformat_unlock();
 
        return audio_input_frame_size;
 }
 
 static void close_audio( AVFormatContext *oc, AVStream *st )
 {
-       avcodec_close( st->codec );
+       if ( st && st->codec )
+       {
+               avformat_lock();
+               avcodec_close( st->codec );
+               avformat_unlock();
+       }
 }
 
 /** Add a video output stream 
 */
 
-static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int codec_id )
+static AVStream *add_video_stream( mlt_consumer consumer, AVFormatContext *oc, int codec_id )
 {
        // Get the properties
-       mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
+       mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 
        // Create a new stream
-       AVStream *st = av_new_stream( oc, 0 );
+       AVStream *st = av_new_stream( oc, oc->nb_streams );
 
        if ( st != NULL ) 
        {
@@ -520,7 +585,41 @@ static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int c
                        avcodec_thread_init( c, thread_count );         
        
                // Process properties as AVOptions
-               apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
+               char *vpre = mlt_properties_get( properties, "vpre" );
+               if ( vpre )
+               {
+                       mlt_properties p = mlt_properties_load( vpre );
+#ifdef AVDATADIR
+                       if ( mlt_properties_count( p ) < 1 )
+                       {
+                               AVCodec *codec = avcodec_find_encoder( c->codec_id );
+                               if ( codec )
+                               {
+                                       char *path = malloc( strlen(AVDATADIR) + strlen(codec->name) + strlen(vpre) + strlen(".ffpreset") + 2 );
+                                       strcpy( path, AVDATADIR );
+                                       strcat( path, codec->name );
+                                       strcat( path, "-" );
+                                       strcat( path, vpre );
+                                       strcat( path, ".ffpreset" );
+                                       
+                                       mlt_properties_close( p );
+                                       p = mlt_properties_load( path );
+                                       mlt_properties_debug( p, path, stderr );
+                                       free( path );   
+                               }
+                       }
+                       else
+                       {
+                               mlt_properties_debug( p, vpre, stderr );                        
+                       }
+#endif
+                       apply_properties( c, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, 1 );
+                       mlt_properties_close( p );
+               }
+               int colorspace = mlt_properties_get_int( properties, "colorspace" );
+               mlt_properties_set( properties, "colorspace", NULL );
+               apply_properties( c, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, 0 );
+               mlt_properties_set_int( properties, "colorspace", colorspace );
 
                // Set options controlled by MLT
                c->width = mlt_properties_get_int( properties, "width" );
@@ -529,7 +628,32 @@ static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int c
                c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
                if ( st->time_base.den == 0 )
                        st->time_base = c->time_base;
+#if LIBAVUTIL_VERSION_INT >= ((50<<16)+(8<<8)+0)
+               c->pix_fmt = pix_fmt ? av_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
+#else
                c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
+#endif
+               
+#if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
+               switch ( colorspace )
+               {
+               case 170:
+                       c->colorspace = AVCOL_SPC_SMPTE170M;
+                       break;
+               case 240:
+                       c->colorspace = AVCOL_SPC_SMPTE240M;
+                       break;
+               case 470:
+                       c->colorspace = AVCOL_SPC_BT470BG;
+                       break;
+               case 601:
+                       c->colorspace = ( 576 % c->height ) ? AVCOL_SPC_SMPTE170M : AVCOL_SPC_BT470BG;
+                       break;
+               case 709:
+                       c->colorspace = AVCOL_SPC_BT709;
+                       break;
+               }
+#endif
 
                if ( mlt_properties_get( properties, "aspect" ) )
                {
@@ -541,7 +665,7 @@ static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int c
                        // for mlt properties that correspond to profile settings
                        mlt_properties_set_int( properties, "display_aspect_num", rational.num );
                        mlt_properties_set_int( properties, "display_aspect_den", rational.den );
-                       mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
+                       mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
                        if ( profile )
                        {
                                profile->display_aspect_num = rational.num;
@@ -597,9 +721,9 @@ static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int c
                if ( mlt_properties_get_int( properties, "progressive" ) == 0 &&
                     mlt_properties_get_int( properties, "deinterlace" ) == 0 )
                {
-                       if ( mlt_properties_get_int( properties, "ildct" ) )
+                       if ( ! mlt_properties_get( properties, "ildct" ) || mlt_properties_get_int( properties, "ildct" ) )
                                c->flags |= CODEC_FLAG_INTERLACED_DCT;
-                       if ( mlt_properties_get_int( properties, "ilme" ) )
+                       if ( ! mlt_properties_get( properties, "ilme" ) || mlt_properties_get_int( properties, "ilme" ) )
                                c->flags |= CODEC_FLAG_INTERLACED_ME;
                }
                
@@ -611,7 +735,7 @@ static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int c
                        int start, end, q;
                        int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
                        if ( e != 3 )
-                               fprintf( stderr, "%s: Error parsing rc_override\n", __FILE__ );
+                               mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "Error parsing rc_override\n" );
                        c->rc_override = av_realloc( c->rc_override, sizeof( RcOverride ) * ( i + 1 ) );
                        c->rc_override[i].start_frame = start;
                        c->rc_override[i].end_frame = end;
@@ -673,7 +797,7 @@ static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int c
                                        fseek( f, 0, SEEK_SET );
                                        logbuffer = av_malloc( size + 1 );
                                        if ( !logbuffer )
-                                               fprintf( stderr, "%s: Could not allocate log buffer\n", __FILE__ );
+                                               mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate log buffer\n" );
                                        else
                                        {
                                                size = fread( logbuffer, 1, size, f );
@@ -688,7 +812,7 @@ static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int c
        }
        else
        {
-               fprintf( stderr, "%s: Could not allocate a stream for video\n", __FILE__ );
+               mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for video\n" );
        }
  
        return st;
@@ -722,13 +846,17 @@ static AVFrame *alloc_picture( int pix_fmt, int width, int height )
        return picture;
 }
        
-static int open_video(AVFormatContext *oc, AVStream *st)
+static int open_video(AVFormatContext *oc, AVStream *st, const char *codec_name)
 {
        // Get the codec
        AVCodecContext *video_enc = st->codec;
 
        // find the video encoder
-       AVCodec *codec = avcodec_find_encoder( video_enc->codec_id );
+       AVCodec *codec;
+       if ( codec_name )
+               codec = avcodec_find_encoder_by_name( codec_name );
+       else
+               codec = avcodec_find_encoder( video_enc->codec_id );
 
        if( codec && codec->pix_fmts )
        {
@@ -743,12 +871,21 @@ static int open_video(AVFormatContext *oc, AVStream *st)
        }
 
        // Open the codec safely
-       return codec != NULL && avcodec_open( video_enc, codec ) >= 0;
+       avformat_lock();
+       int result = codec != NULL && avcodec_open( video_enc, codec ) >= 0;
+       avformat_unlock();
+       
+       return result;
 }
 
 void close_video(AVFormatContext *oc, AVStream *st)
 {
-       avcodec_close(st->codec);
+       if ( st && st->codec )
+       {
+               avformat_lock();
+               avcodec_close(st->codec);
+               avformat_unlock();
+       }
 }
 
 static inline long time_difference( struct timeval *time1 )
@@ -764,10 +901,10 @@ static inline long time_difference( struct timeval *time1 )
 static void *consumer_thread( void *arg )
 {
        // Map the argument to the object
-       mlt_consumer this = arg;
+       mlt_consumer consumer = arg;
 
        // Get the properties
-       mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
+       mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 
        // Get the terminate on pause property
        int terminate_on_pause = mlt_properties_get_int( properties, "terminate_on_pause" );
@@ -789,20 +926,21 @@ static void *consumer_thread( void *arg )
        int img_height = height;
 
        // Get default audio properties
-       mlt_audio_format aud_fmt = mlt_audio_pcm;
+       mlt_audio_format aud_fmt = mlt_audio_s16;
        int channels = mlt_properties_get_int( properties, "channels" );
+       int total_channels = channels;
        int frequency = mlt_properties_get_int( properties, "frequency" );
        int16_t *pcm = NULL;
        int samples = 0;
 
        // AVFormat audio buffer and frame size
-       int audio_outbuf_size = 10000;
+       int audio_outbuf_size = AUDIO_BUFFER_SIZE;
        uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
        int audio_input_frame_size = 0;
 
        // AVFormat video buffer and frame count
        int frame_count = 0;
-       int video_outbuf_size = ( 1024 * 1024 );
+       int video_outbuf_size = VIDEO_BUFFER_SIZE;
        uint8_t *video_outbuf = av_malloc( video_outbuf_size );
 
        // Used for the frame properties
@@ -822,24 +960,26 @@ static void *consumer_thread( void *arg )
        mlt_image_format img_fmt = mlt_image_yuv422;
 
        // For receiving audio samples back from the fifo
-       int16_t *buffer = av_malloc( 48000 * 2 );
+       int16_t *audio_buf_1 = av_malloc( AUDIO_ENCODE_BUFFER_SIZE );
+       int16_t *audio_buf_2 = NULL;
        int count = 0;
 
        // Allocate the context
+#if (LIBAVFORMAT_VERSION_INT >= ((52<<16)+(26<<8)+0))
+       AVFormatContext *oc = avformat_alloc_context( );
+#else
        AVFormatContext *oc = av_alloc_format_context( );
+#endif
 
        // Streams
-       AVStream *audio_st = NULL;
        AVStream *video_st = NULL;
+       AVStream *audio_st[ MAX_AUDIO_STREAMS ];
 
        // Time stamps
        double audio_pts = 0;
        double video_pts = 0;
 
-       // Loop variable
-       int i;
-
-       // Frames despatched
+       // Frames dispatched
        long int frames = 0;
        long int total_time = 0;
 
@@ -854,17 +994,38 @@ static void *consumer_thread( void *arg )
        int audio_codec_id;
        int video_codec_id;
 
+       // Misc
+       char key[27];
+       mlt_properties frame_meta_properties = mlt_properties_new();
+
+       // Initialize audio_st
+       int i = MAX_AUDIO_STREAMS;
+       while ( i-- )
+               audio_st[i] = NULL;
+
        // Check for user selected format first
        if ( format != NULL )
+#if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
                fmt = guess_format( format, NULL, NULL );
+#else
+               fmt = av_guess_format( format, NULL, NULL );
+#endif
 
        // Otherwise check on the filename
        if ( fmt == NULL && filename != NULL )
+#if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
                fmt = guess_format( NULL, filename, NULL );
+#else
+               fmt = av_guess_format( NULL, filename, NULL );
+#endif
 
        // Otherwise default to mpeg
        if ( fmt == NULL )
+#if LIBAVFORMAT_VERSION_INT < ((52<<16)+(45<<8)+0)
                fmt = guess_format( "mpeg", NULL, NULL );
+#else
+               fmt = av_guess_format( "mpeg", NULL, NULL );
+#endif
 
        // We need a filename - default to stdout?
        if ( filename == NULL || !strcmp( filename, "" ) )
@@ -875,19 +1036,26 @@ static void *consumer_thread( void *arg )
        video_codec_id = fmt->video_codec;
 
        // Check for audio codec overides
-       if ( ( acodec && strcmp( "acodec", "none" ) == 0 ) || mlt_properties_get_int( properties, "an" ) )
+       if ( ( acodec && strcmp( acodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "an" ) )
                audio_codec_id = CODEC_ID_NONE;
        else if ( acodec )
        {
                AVCodec *p = avcodec_find_encoder_by_name( acodec );
                if ( p != NULL )
+               {
                        audio_codec_id = p->id;
+                       if ( audio_codec_id == CODEC_ID_AC3 && avcodec_find_encoder_by_name( "ac3_fixed" ) )
+                       {
+                               mlt_properties_set( properties, "_acodec", "ac3_fixed" );
+                               acodec = mlt_properties_get( properties, "_acodec" );
+                       }
+               }
                else
-                       fprintf( stderr, "%s: audio codec %s unrecognised - ignoring\n", __FILE__, acodec );
+                       mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "audio codec %s unrecognised - ignoring\n", acodec );
        }
 
        // Check for video codec overides
-       if ( ( vcodec && strcmp( "vcodec", "none" ) == 0 ) || mlt_properties_get_int( properties, "vn" ) )
+       if ( ( vcodec && strcmp( vcodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "vn" ) )
                video_codec_id = CODEC_ID_NONE;
        else if ( vcodec )
        {
@@ -895,10 +1063,32 @@ static void *consumer_thread( void *arg )
                if ( p != NULL )
                        video_codec_id = p->id;
                else
-                       fprintf( stderr, "%s: video codec %s unrecognised - ignoring\n", __FILE__, vcodec );
+                       mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "video codec %s unrecognised - ignoring\n", vcodec );
        }
 
        // Write metadata
+#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
+       for ( i = 0; i < mlt_properties_count( properties ); i++ )
+       {
+               char *name = mlt_properties_get_name( properties, i );
+               if ( name && !strncmp( name, "meta.attr.", 10 ) )
+               {
+                       char *key = strdup( name + 10 );
+                       char *markup = strrchr( key, '.' );
+                       if ( markup && !strcmp( markup, ".markup") )
+                       {
+                               markup[0] = '\0';
+                               if ( !strstr( key, ".stream." ) )
+#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(43<<8)+0)
+                                       av_metadata_set2( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
+#else
+                                       av_metadata_set( &oc->metadata, key, mlt_properties_get_value( properties, i ) );
+#endif
+                       }
+                       free( key );
+               }
+       }
+#else
        char *tmp = NULL;
        int metavalue;
 
@@ -922,15 +1112,38 @@ static void *consumer_thread( void *arg )
 
        metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup");
        if (metavalue != 0) oc->track = metavalue;
+#endif
 
        oc->oformat = fmt;
        snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
 
-       // Add audio and video streams 
+       // Add audio and video streams
        if ( video_codec_id != CODEC_ID_NONE )
-               video_st = add_video_stream( this, oc, video_codec_id );
+               video_st = add_video_stream( consumer, oc, video_codec_id );
        if ( audio_codec_id != CODEC_ID_NONE )
-               audio_st = add_audio_stream( this, oc, audio_codec_id );
+       {
+               int is_multi = 0;
+
+               total_channels = 0;
+               // multitrack audio
+               for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
+               {
+                       sprintf( key, "channels.%d", i );
+                       int j = mlt_properties_get_int( properties, key );
+                       if ( j )
+                       {
+                               is_multi = 1;
+                               total_channels += j;
+                               audio_st[i] = add_audio_stream( consumer, oc, audio_codec_id, j );
+                       }
+               }
+               // single track
+               if ( !is_multi )
+               {
+                       audio_st[0] = add_audio_stream( consumer, oc, audio_codec_id, channels );
+                       total_channels = channels;
+               }
+       }
 
        // Set the parameters (even though we have none...)
        if ( av_set_parameters(oc, NULL) >= 0 ) 
@@ -939,30 +1152,42 @@ static void *consumer_thread( void *arg )
                oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
 
                // Process properties as AVOptions
-               apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM );
+               char *fpre = mlt_properties_get( properties, "fpre" );
+               if ( fpre )
+               {
+                       mlt_properties p = mlt_properties_load( fpre );
+                       apply_properties( oc, p, AV_OPT_FLAG_ENCODING_PARAM, 1 );
+                       mlt_properties_close( p );
+               }
+               apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM, 0 );
 
-               if ( video_st && !open_video( oc, video_st ) )
+               if ( video_st && !open_video( oc, video_st, vcodec? vcodec : NULL ) )
                        video_st = NULL;
-               if ( audio_st )
-                       audio_input_frame_size = open_audio( oc, audio_st, audio_outbuf_size );
+               for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
+               {
+                       audio_input_frame_size = open_audio( oc, audio_st[i], audio_outbuf_size,
+                               acodec? acodec : NULL );
+                       if ( !audio_input_frame_size )
+                               audio_st[i] = NULL;
+               }
 
                // Open the output file, if needed
                if ( !( fmt->flags & AVFMT_NOFILE ) ) 
                {
                        if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 ) 
                        {
-                               fprintf( stderr, "%s: Could not open '%s'\n", __FILE__, filename );
+                               mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not open '%s'\n", filename );
                                mlt_properties_set_int( properties, "running", 0 );
                        }
                }
        
-               // Write the stream header, if any
+               // Write the stream header.
                if ( mlt_properties_get_int( properties, "running" ) )
                        av_write_header( oc );
        }
        else
        {
-               fprintf( stderr, "%s: Invalid output format parameters\n", __FILE__ );
+               mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Invalid output format parameters\n" );
                mlt_properties_set_int( properties, "running", 0 );
        }
 
@@ -971,22 +1196,22 @@ static void *consumer_thread( void *arg )
                output = alloc_picture( video_st->codec->pix_fmt, width, height );
 
        // Last check - need at least one stream
-       if ( audio_st == NULL && video_st == NULL )
+       if ( !audio_st[0] && !video_st )
                mlt_properties_set_int( properties, "running", 0 );
 
        // Get the starting time (can ignore the times above)
        gettimeofday( &ante, NULL );
 
        // Loop while running
-       while( mlt_properties_get_int( properties, "running" ) && !terminated )
+       while( mlt_properties_get_int( properties, "running" ) &&
+              ( !terminated || ( video_st && mlt_deque_count( queue ) ) ) )
        {
-               // Get the frame
-               frame = mlt_consumer_rt_frame( this );
+               frame = mlt_consumer_rt_frame( consumer );
 
                // Check that we have a frame to work with
                if ( frame != NULL )
                {
-                       // Increment frames despatched
+                       // Increment frames dispatched
                        frames ++;
 
                        // Default audio args
@@ -996,10 +1221,13 @@ static void *consumer_thread( void *arg )
                        terminated = terminate_on_pause && mlt_properties_get_double( frame_properties, "_speed" ) == 0.0;
 
                        // Get audio and append to the fifo
-                       if ( !terminated && audio_st )
+                       if ( !terminated && audio_st[0] )
                        {
                                samples = mlt_sample_calculator( fps, frequency, count ++ );
-                               mlt_frame_get_audio( frame, &pcm, &aud_fmt, &frequency, &channels, &samples );
+                               mlt_frame_get_audio( frame, (void**) &pcm, &aud_fmt, &frequency, &channels, &samples );
+
+                               // Save the audio channel remap properties for later
+                               mlt_properties_pass( frame_meta_properties, frame_properties, "meta.map.audio." );
 
                                // Create the fifo if we don't have one
                                if ( fifo == NULL )
@@ -1008,12 +1236,16 @@ static void *consumer_thread( void *arg )
                                        mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
                                }
 
+                               // Silence if not normal forward speed
                                if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
                                        memset( pcm, 0, samples * channels * 2 );
 
                                // Append the samples
                                sample_fifo_append( fifo, pcm, samples * channels );
                                total_time += ( samples * 1000000 ) / frequency;
+
+                               if ( !video_st )
+                                       mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
                        }
 
                        // Encode the image
@@ -1026,42 +1258,142 @@ static void *consumer_thread( void *arg )
                // While we have stuff to process, process...
                while ( 1 )
                {
-                       if (audio_st)
-                               audio_pts = (double)audio_st->pts.val * audio_st->time_base.num / audio_st->time_base.den;
-                       else
-                               audio_pts = 0.0;
-        
-                       if (video_st)
-                               video_pts = (double)video_st->pts.val * video_st->time_base.num / video_st->time_base.den;
-                       else
-                               video_pts = 0.0;
-
                        // Write interleaved audio and video frames
-                       if ( !video_st || ( video_st && audio_st && audio_pts < video_pts ) )
+                       if ( !video_st || ( video_st && audio_st[0] && audio_pts < video_pts ) )
                        {
-                               if ( channels * audio_input_frame_size < sample_fifo_used( fifo ) )
+                               // Write audio
+                               if ( ( video_st && terminated ) || ( channels * audio_input_frame_size ) < sample_fifo_used( fifo ) )
                                {
-                                       AVCodecContext *c;
-                                       AVPacket pkt;
-                                       av_init_packet( &pkt );
+                                       int j = 0; // channel offset into interleaved source buffer
+                                       int n = FFMIN( FFMIN( channels * audio_input_frame_size, sample_fifo_used( fifo ) ), AUDIO_ENCODE_BUFFER_SIZE );
+
+                                       // Get the audio samples
+                                       if ( n > 0 )
+                                       {
+                                               sample_fifo_fetch( fifo, audio_buf_1, n );
+                                       }
+                                       else if ( audio_codec_id == CODEC_ID_VORBIS && terminated )
+                                       {
+                                               // This prevents an infinite loop when some versions of vorbis do not
+                                               // increment pts when encoding silence.
+                                               audio_pts = video_pts;
+                                               break;
+                                       }
+                                       else
+                                       {
+                                               memset( audio_buf_1, 0, AUDIO_ENCODE_BUFFER_SIZE );
+                                       }
+                                       samples = n / channels;
+
+                                       // For each output stream
+                                       for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i] && j < total_channels; i++ )
+                                       {
+                                               AVStream *stream = audio_st[i];
+                                               AVCodecContext *codec = stream->codec;
+                                               AVPacket pkt;
+
+                                               av_init_packet( &pkt );
+
+                                               // Optimized for single track and no channel remap
+                                               if ( !audio_st[1] && !mlt_properties_count( frame_meta_properties ) )
+                                               {
+                                                       pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, audio_buf_1 );
+                                               }
+                                               else
+                                               {
+                                                       // Extract the audio channels according to channel mapping
+                                                       int dest_offset = 0; // channel offset into interleaved dest buffer
+
+                                                       // Get the number of channels for this stream
+                                                       sprintf( key, "channels.%d", i );
+                                                       int current_channels = mlt_properties_get_int( properties, key );
 
-                                       c = audio_st->codec;
+                                                       // Clear the destination audio buffer.
+                                                       if ( !audio_buf_2 )
+                                                               audio_buf_2 = av_mallocz( AUDIO_ENCODE_BUFFER_SIZE );
+                                                       else
+                                                               memset( audio_buf_2, 0, AUDIO_ENCODE_BUFFER_SIZE );
+
+                                                       // For each output channel
+                                                       while ( dest_offset < current_channels && j < total_channels )
+                                                       {
+                                                               int map_start = -1, map_channels = 0;
+                                                               int source_offset = 0;
+                                                               int k;
 
-                                       sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
+                                                               // Look for a mapping that starts at j
+                                                               for ( k = 0; k < (MAX_AUDIO_STREAMS * 2) && map_start != j; k++ )
+                                                               {
+                                                                       sprintf( key, "%d.channels", k );
+                                                                       map_channels = mlt_properties_get_int( frame_meta_properties, key );
+                                                                       sprintf( key, "%d.start", k );
+                                                                       if ( mlt_properties_get( frame_meta_properties, key ) )
+                                                                               map_start = mlt_properties_get_int( frame_meta_properties, key );
+                                                                       if ( map_start != j )
+                                                                               source_offset += map_channels;
+                                                               }
+
+                                                               // If no mapping
+                                                               if ( map_start != j )
+                                                               {
+                                                                       map_channels = current_channels;
+                                                                       source_offset = j;
+                                                               }
+
+                                                               // Copy samples if source offset valid
+                                                               if ( source_offset < channels )
+                                                               {
+                                                                       // Interleave the audio buffer with the # channels for this stream/mapping.
+                                                                       for ( k = 0; k < map_channels; k++, j++, source_offset++, dest_offset++ )
+                                                                       {
+                                                                               int16_t *src = audio_buf_1 + source_offset;
+                                                                               int16_t *dest = audio_buf_2 + dest_offset;
+                                                                               int s = samples + 1;
+
+                                                                               while ( --s ) {
+                                                                                       *dest = *src;
+                                                                                       dest += current_channels;
+                                                                                       src += channels;
+                                                                               }
+                                                                       }
+                                                               }
+                                                               // Otherwise silence
+                                                               else
+                                                               {
+                                                                       j += current_channels;
+                                                                       dest_offset += current_channels;
+                                                               }
+                                                       }
+                                                       pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, audio_buf_2 );
+                                               }
 
-                                       pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
-                                       // Write the compressed frame in the media file
-                                       if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
-                                               pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base );
-                                       pkt.flags |= PKT_FLAG_KEY;
-                                       pkt.stream_index= audio_st->index;
-                                       pkt.data= audio_outbuf;
+                                               // Write the compressed frame in the media file
+                                               if ( codec->coded_frame && codec->coded_frame->pts != AV_NOPTS_VALUE )
+                                               {
+                                                       pkt.pts = av_rescale_q( codec->coded_frame->pts, codec->time_base, stream->time_base );
+                                                       mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio stream %d pkt pts %lld frame pts %lld",
+                                                               stream->index, pkt.pts, codec->coded_frame->pts );
+                                               }
+                                               pkt.flags |= PKT_FLAG_KEY;
+                                               pkt.stream_index = stream->index;
+                                               pkt.data = audio_outbuf;
 
-                                       if ( pkt.size )
-                                               if ( av_interleaved_write_frame( oc, &pkt ) != 0) 
-                                                       fprintf( stderr, "%s: Error while writing audio frame\n", __FILE__ );
+                                               if ( pkt.size > 0 )
+                                               {
+                                                       if ( av_interleaved_write_frame( oc, &pkt ) )
+                                                       {
+                                                               mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing audio frame\n" );
+                                                               mlt_events_fire( properties, "consumer-fatal-error", NULL );
+                                                               goto on_fatal_error;
+                                                       }
+                                               }
 
-                                       audio_pts += c->frame_size;
+                                               mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", codec->frame_size );
+                                               if ( i == 0 )
+                                               {
+                                                       audio_pts = (double)stream->pts.val * av_q2d( stream->time_base );
+                                               }
+                                       }
                                }
                                else
                                {
@@ -1070,9 +1402,10 @@ static void *consumer_thread( void *arg )
                        }
                        else if ( video_st )
                        {
+                               // Write video
                                if ( mlt_deque_count( queue ) )
                                {
-                                       int out_size, ret;
+                                       int out_size, ret = 0;
                                        AVCodecContext *c;
 
                                        frame = mlt_deque_pop_front( queue );
@@ -1083,12 +1416,9 @@ static void *consumer_thread( void *arg )
                                        if ( mlt_properties_get_int( frame_properties, "rendered" ) )
                                        {
                                                int i = 0;
-                                               int j = 0;
                                                uint8_t *p;
                                                uint8_t *q;
 
-                                               mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
-
                                                mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
 
                                                q = image;
@@ -1097,18 +1427,21 @@ static void *consumer_thread( void *arg )
                                                for ( i = 0; i < height; i ++ )
                                                {
                                                        p = input->data[ 0 ] + i * input->linesize[ 0 ];
-                                                       j = width;
-                                                       while( j -- )
-                                                       {
-                                                               *p ++ = *q ++;
-                                                               *p ++ = *q ++;
-                                                       }
+                                                       memcpy( p, q, width * 2 );
+                                                       q += width * 2;
                                                }
 
                                                // Do the colour space conversion
 #ifdef SWSCALE
+                                               int flags = SWS_BILINEAR;
+#ifdef USE_MMX
+                                               flags |= SWS_CPU_CAPS_MMX;
+#endif
+#ifdef USE_SSE
+                                               flags |= SWS_CPU_CAPS_MMX2;
+#endif
                                                struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUYV422,
-                                                       width, height, video_st->codec->pix_fmt, SWS_FAST_BILINEAR, NULL, NULL, NULL);
+                                                       width, height, video_st->codec->pix_fmt, flags, NULL, NULL, NULL);
                                                sws_scale( context, input->data, input->linesize, 0, height,
                                                        output->data, output->linesize);
                                                sws_freeContext( context );
@@ -1116,6 +1449,8 @@ static void *consumer_thread( void *arg )
                                                img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUYV422, width, height );
 #endif
 
+                                               mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
+
                                                // Apply the alpha if applicable
                                                if ( video_st->codec->pix_fmt == PIX_FMT_RGB32 )
                                                {
@@ -1125,11 +1460,7 @@ static void *consumer_thread( void *arg )
                                                        for ( i = 0; i < height; i ++ )
                                                        {
                                                                n = ( width + 7 ) / 8;
-                                                               p = output->data[ 0 ] + i * output->linesize[ 0 ];
-
-                                                               #ifndef __DARWIN__
-                                                               p += 3;
-                                                               #endif
+                                                               p = output->data[ 0 ] + i * output->linesize[ 0 ] + 3;
 
                                                                switch( width % 8 )
                                                                {
@@ -1170,18 +1501,20 @@ static void *consumer_thread( void *arg )
                                                // Set frame interlace hints
                                                output->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
                                                output->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
+                                               output->pts = frame_count;
 
                                                // Encode the image
                                                out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
 
                                                // If zero size, it means the image was buffered
-                                               if (out_size > 0) 
+                                               if ( out_size > 0 )
                                                {
                                                        AVPacket pkt;
                                                        av_init_packet( &pkt );
 
                                                        if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
                                                                pkt.pts= av_rescale_q( c->coded_frame->pts, c->time_base, video_st->time_base );
+                                                       mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pkt pts %lld frame pts %lld", pkt.pts, c->coded_frame->pts );
                                                        if( c->coded_frame && c->coded_frame->key_frame )
                                                                pkt.flags |= PKT_FLAG_KEY;
                                                        pkt.stream_index= video_st->index;
@@ -1190,18 +1523,25 @@ static void *consumer_thread( void *arg )
 
                                                        // write the compressed frame in the media file
                                                        ret = av_interleaved_write_frame(oc, &pkt);
-                                                       video_pts += c->frame_size;
+                                                       mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), " frame_size %d\n", c->frame_size );
+                                                       video_pts = (double)video_st->pts.val * av_q2d( video_st->time_base );
                                                        
                                                        // Dual pass logging
-                                                       if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out)
+                                                       if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
                                                                fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
                                                } 
-                                               else
+                                               else if ( out_size < 0 )
                                                {
-                                                       fprintf( stderr, "%s: error with video encode\n", __FILE__ );
+                                                       mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "error with video encode %d\n", frame_count );
                                                }
                                        }
                                        frame_count++;
+                                       if ( ret )
+                                       {
+                                               mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing video frame\n" );
+                                               mlt_events_fire( properties, "consumer-fatal-error", NULL );
+                                               goto on_fatal_error;
+                                       }
                                        mlt_frame_close( frame );
                                }
                                else
@@ -1209,9 +1549,14 @@ static void *consumer_thread( void *arg )
                                        break;
                                }
                        }
+                       if ( audio_st[0] )
+                               mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio pts %lld (%f) ", audio_st[0]->pts.val, audio_pts );
+                       if ( video_st )
+                               mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pts %lld (%f) ", video_st->pts.val, video_pts );
+                       mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "\n" );
                }
 
-               if ( real_time_output == 1 && frames % 12 == 0 )
+               if ( real_time_output == 1 && frames % 2 == 0 )
                {
                        long passed = time_difference( &ante );
                        if ( fifo != NULL )
@@ -1228,13 +1573,14 @@ static void *consumer_thread( void *arg )
                }
        }
 
-#ifdef FLUSH
-       if ( ! real_time_output )
+       // Flush the encoder buffers
+       if ( real_time_output <= 0 )
        {
                // Flush audio fifo
-               if ( audio_st && audio_st->codec->frame_size > 1 ) for (;;)
+               // TODO: flush all audio streams
+               if ( audio_st[0] && audio_st[0]->codec->frame_size > 1 ) for (;;)
                {
-                       AVCodecContext *c = audio_st->codec;
+                       AVCodecContext *c = audio_st[0]->codec;
                        AVPacket pkt;
                        av_init_packet( &pkt );
                        pkt.size = 0;
@@ -1242,24 +1588,26 @@ static void *consumer_thread( void *arg )
                        if ( /*( c->capabilities & CODEC_CAP_SMALL_LAST_FRAME ) &&*/
                                ( channels * audio_input_frame_size < sample_fifo_used( fifo ) ) )
                        {
-                               sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
-                               pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
+                               sample_fifo_fetch( fifo, audio_buf_1, channels * audio_input_frame_size );
+                               pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, audio_buf_1 );
                        }
                        if ( pkt.size <= 0 )
                                pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
+                       mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing audio size %d\n", pkt.size );
                        if ( pkt.size <= 0 )
                                break;
 
                        // Write the compressed frame in the media file
                        if ( c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE )
-                               pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st->time_base );
+                               pkt.pts = av_rescale_q( c->coded_frame->pts, c->time_base, audio_st[0]->time_base );
                        pkt.flags |= PKT_FLAG_KEY;
-                       pkt.stream_index = audio_st->index;
+                       pkt.stream_index = audio_st[0]->index;
                        pkt.data = audio_outbuf;
                        if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
                        {
-                               fprintf( stderr, "%s: Error while writing flushed audio frame\n", __FILE__ );
-                               break;
+                               mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "error writing flushed audio frame\n" );
+                               mlt_events_fire( properties, "consumer-fatal-error", NULL );
+                               goto on_fatal_error;
                        }
                }
 
@@ -1272,6 +1620,7 @@ static void *consumer_thread( void *arg )
 
                        // Encode the image
                        pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
+                       mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing video size %d\n", pkt.size );
                        if ( pkt.size <= 0 )
                                break;
 
@@ -1285,32 +1634,37 @@ static void *consumer_thread( void *arg )
                        // write the compressed frame in the media file
                        if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
                        {
-                               fprintf( stderr, "%s: Error while writing flushed video frame\n". __FILE__ );
-                               break;
+                               mlt_log_fatal( MLT_CONSUMER_SERVICE(consumer), "error writing flushed video frame\n" );
+                               mlt_events_fire( properties, "consumer-fatal-error", NULL );
+                               goto on_fatal_error;
                        }
+                       // Dual pass logging
+                       if ( mlt_properties_get_data( properties, "_logfile", NULL ) && c->stats_out )
+                               fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
                }
        }
-#endif
-
-       // close each codec 
-       if (video_st)
-               close_video(oc, video_st);
-       if (audio_st)
-               close_audio(oc, audio_st);
 
+on_fatal_error:
+       
        // Write the trailer, if any
-       av_write_trailer(oc);
+       av_write_trailer( oc );
+
+       // close each codec
+       if ( video_st )
+               close_video(oc, video_st);
+       for ( i = 0; i < MAX_AUDIO_STREAMS && audio_st[i]; i++ )
+               close_audio( oc, audio_st[i] );
 
        // Free the streams
-       for(i = 0; i < oc->nb_streams; i++)
-               av_freep(&oc->streams[i]);
+       for ( i = 0; i < oc->nb_streams; i++ )
+               av_freep( &oc->streams[i] );
 
        // Close the output file
-       if (!(fmt->flags & AVFMT_NOFILE))
+       if ( !( fmt->flags & AVFMT_NOFILE ) )
 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(0<<8)+0)
-               url_fclose(oc->pb);
+               url_fclose( oc->pb );
 #else
-               url_fclose(&oc->pb);
+               url_fclose( &oc->pb );
 #endif
 
        // Clean up input and output frames
@@ -1320,17 +1674,19 @@ static void *consumer_thread( void *arg )
        av_free( input->data[0] );
        av_free( input );
        av_free( video_outbuf );
-       av_free( buffer );
+       av_free( audio_buf_1 );
+       av_free( audio_buf_2 );
 
        // Free the stream
-       av_free(oc);
+       av_free( oc );
 
        // Just in case we terminated on pause
        mlt_properties_set_int( properties, "running", 0 );
 
-       mlt_consumer_stopped( this );
+       mlt_consumer_stopped( consumer );
+       mlt_properties_close( frame_meta_properties );
 
-       if ( mlt_properties_get_int( properties, "pass" ) == 2 )
+       if ( mlt_properties_get_int( properties, "pass" ) > 1 )
        {
                // Remove the dual pass log file
                if ( mlt_properties_get( properties, "_logfilename" ) )
@@ -1348,6 +1704,11 @@ static void *consumer_thread( void *arg )
                sprintf( full, "%s/%s", cwd, file );
                remove( full );
                free( full );
+               file = "x264_2pass.log.mbtree";
+               full = malloc( strlen( cwd ) + strlen( file ) + 2 );
+               sprintf( full, "%s/%s", cwd, file );
+               remove( full );
+               free( full );
                free( cwd );
                remove( "x264_2pass.log.temp" );
        }
@@ -1358,14 +1719,14 @@ static void *consumer_thread( void *arg )
 /** Close the consumer.
 */
 
-static void consumer_close( mlt_consumer this )
+static void consumer_close( mlt_consumer consumer )
 {
        // Stop the consumer
-       mlt_consumer_stop( this );
+       mlt_consumer_stop( consumer );
 
        // Close the parent
-       mlt_consumer_close( this );
+       mlt_consumer_close( consumer );
 
        // Free the memory
-       free( this );
+       free( consumer );
 }