]> git.sesse.net Git - mlt/blobdiff - src/modules/avformat/consumer_avformat.c
Cleanup x264 stats files when "passlogfile" supplied.
[mlt] / src / modules / avformat / consumer_avformat.c
index 5a1ab27201c5faf0709a8cdee2eae8f2e7f9f9ca..ceaa12c67095488bb414ee2498cbe4e37388f4e0 100644 (file)
@@ -1,7 +1,9 @@
 /*
  * consumer_avformat.c -- an encoder based on avformat
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
+ * Copyright (C) 2003-2012 Ushodaya Enterprises Limited
  * Author: Charles Yates <charles.yates@pandora.be>
+ * Author: Dan Dennedy <dan@dennedy.org>
+ * Much code borrowed from ffmpeg.c: Copyright (c) 2000-2003 Fabrice Bellard
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -21,6 +23,9 @@
 // mlt Header files
 #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>
-#ifdef SWSCALE
-#include <swscale.h>
+#include <libavformat/avformat.h>
+#include <libavformat/avio.h>
+#include <libswscale/swscale.h>
+#include <libavutil/pixdesc.h>
+#include <libavutil/mathematics.h>
+#include <libavutil/samplefmt.h>
+
+#if LIBAVCODEC_VERSION_MAJOR >= 53
+#include <libavutil/opt.h>
+#define CODEC_TYPE_VIDEO      AVMEDIA_TYPE_VIDEO
+#define CODEC_TYPE_AUDIO      AVMEDIA_TYPE_AUDIO
+#define PKT_FLAG_KEY AV_PKT_FLAG_KEY
+#else
+#include <libavcodec/opt.h>
+#endif
+
+#if LIBAVCODEC_VERSION_MAJOR < 55
+#define AV_CODEC_ID_PCM_S16LE CODEC_ID_PCM_S16LE
+#define AV_CODEC_ID_PCM_S16BE CODEC_ID_PCM_S16BE
+#define AV_CODEC_ID_PCM_U16LE CODEC_ID_PCM_U16LE
+#define AV_CODEC_ID_PCM_U16BE CODEC_ID_PCM_U16BE
+#define AV_CODEC_ID_H264      CODEC_ID_H264
+#define AV_CODEC_ID_NONE      CODEC_ID_NONE
+#define AV_CODEC_ID_AC3       CODEC_ID_AC3
+#define AV_CODEC_ID_VORBIS    CODEC_ID_VORBIS
+#define AV_CODEC_ID_RAWVIDEO  CODEC_ID_RAWVIDEO
+#define AV_CODEC_ID_MJPEG     CODEC_ID_MJPEG
 #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)
+
 //
 // This structure should be extended and made globally available in mlt
 //
 
 typedef struct
 {
-       int16_t *buffer;
+       uint8_t *buffer;
        int size;
        int used;
        double time;
@@ -54,99 +88,74 @@ 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_clear and check are temporarily aborted (not working as intended)
-
-void sample_fifo_clear( sample_fifo this, 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 )
-       {
-               memmove( this->buffer, &this->buffer[ words ], ( this->used - words ) * sizeof( int16_t ) );
-               this->used -= words;
-               this->time = time;
-       }
-       else if ( ( int )( ( float )time * 100 ) != ( int )( ( float )this->time * 100 ) )
-       {
-               this->used = 0;
-               this->time = time;
-       }
-}
-
-void sample_fifo_check( sample_fifo this, double time )
-{
-       if ( this->used == 0 )
-       {
-               if ( ( int )( ( float )time * 100 ) < ( int )( ( float )this->time * 100 ) )
-                       this->time = time;
-       }
+       sample_fifo fifo = calloc( 1, sizeof( sample_fifo_s ) );
+       fifo->frequency = frequency;
+       fifo->channels = channels;
+       return fifo;
 }
 
-void sample_fifo_append( sample_fifo this, int16_t *samples, int count )
+// count is the number of samples multiplied by the number of bytes per sample
+void sample_fifo_append( sample_fifo fifo, uint8_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 );
        }
 
-       memcpy( &this->buffer[ this->used ], samples, count * sizeof( int16_t ) );
-       this->used += count;
+       memcpy( &fifo->buffer[ fifo->used ], samples, count );
+       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, uint8_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 );
+       fifo->used -= count;
+       memmove( fifo->buffer, &fifo->buffer[ count ], fifo->used );
 
-       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 void property_changed( mlt_properties owner, mlt_consumer self, char *name );
+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 )
@@ -155,147 +164,231 @@ mlt_consumer consumer_avformat_init( mlt_profile profile, char *arg )
                // sample and frame queue
                mlt_properties_set_data( properties, "frame_queue", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
 
-               // Set avformat defaults (all lifted from ffmpeg.c)
-               mlt_properties_set_int( properties, "audio_bit_rate", 128000 );
-               mlt_properties_set_int( properties, "video_bit_rate", 200 * 1000 );
-               mlt_properties_set_int( properties, "video_bit_rate_tolerance", 4000 * 1000 );
-               mlt_properties_set_int( properties, "gop_size", 12 );
-               mlt_properties_set_int( properties, "b_frames", 0 );
-               mlt_properties_set_int( properties, "mb_decision", FF_MB_DECISION_SIMPLE );
-               mlt_properties_set_double( properties, "qscale", 0 );
-               mlt_properties_set_int( properties, "me_method", ME_EPZS );
-               mlt_properties_set_int( properties, "mb_cmp", FF_CMP_SAD );
-               mlt_properties_set_int( properties, "ildct_cmp", FF_CMP_VSAD );
-               mlt_properties_set_int( properties, "sub_cmp", FF_CMP_SAD );
-               mlt_properties_set_int( properties, "cmp", FF_CMP_SAD );
-               mlt_properties_set_int( properties, "pre_cmp", FF_CMP_SAD );
-               mlt_properties_set_int( properties, "pre_me", 0 );
-               mlt_properties_set_double( properties, "lumi_mask", 0 );
-               mlt_properties_set_double( properties, "dark_mask", 0 );
-               mlt_properties_set_double( properties, "scplx_mask", 0 );
-               mlt_properties_set_double( properties, "tcplx_mask", 0 );
-               mlt_properties_set_double( properties, "p_mask", 0 );
-               mlt_properties_set_int( properties, "qns", 0 );
-               mlt_properties_set_int( properties, "video_qmin", 2 );
-               mlt_properties_set_int( properties, "video_qmax", 31 );
-               mlt_properties_set_int( properties, "video_lmin", 2*FF_QP2LAMBDA );
-               mlt_properties_set_int( properties, "video_lmax", 31*FF_QP2LAMBDA );
-               mlt_properties_set_int( properties, "video_mb_qmin", 2 );
-               mlt_properties_set_int( properties, "video_mb_qmax", 31 );
-               mlt_properties_set_int( properties, "video_qdiff", 3 );
-               mlt_properties_set_double( properties, "video_qblur", 0.5 );
-               mlt_properties_set_double( properties, "video_qcomp", 0.5 );
-               mlt_properties_set_int( properties, "video_rc_max_rate", 0 );
-               mlt_properties_set_int( properties, "video_rc_min_rate", 0 );
-               mlt_properties_set_int( properties, "video_rc_buffer_size", 0 );
-               mlt_properties_set_double( properties, "video_rc_buffer_aggressivity", 1.0 );
-               mlt_properties_set_double( properties, "video_rc_initial_cplx", 0 );
-               mlt_properties_set_double( properties, "video_i_qfactor", -0.8 );
-               mlt_properties_set_double( properties, "video_b_qfactor", 1.25 );
-               mlt_properties_set_double( properties, "video_i_qoffset", 0 );
-               mlt_properties_set_double( properties, "video_b_qoffset", 1.25 );
-               mlt_properties_set_int( properties, "video_intra_quant_bias", FF_DEFAULT_QUANT_BIAS );
-               mlt_properties_set_int( properties, "video_inter_quant_bias", FF_DEFAULT_QUANT_BIAS );
-               mlt_properties_set_int( properties, "dct_algo", 0 );
-               mlt_properties_set_int( properties, "idct_algo", 0 );
-               mlt_properties_set_int( properties, "me_threshold", 0 );
-               mlt_properties_set_int( properties, "mb_threshold", 0 );
-               mlt_properties_set_int( properties, "intra_dc_precision", 0 );
-               mlt_properties_set_int( properties, "strict", 0 );
-               mlt_properties_set_int( properties, "error_rate", 0 );
-               mlt_properties_set_int( properties, "noise_reduction", 0 );
-               mlt_properties_set_int( properties, "sc_threshold", 0 );
-               mlt_properties_set_int( properties, "me_range", 0 );
-               mlt_properties_set_int( properties, "coder", 0 );
-               mlt_properties_set_int( properties, "context", 0 );
-               mlt_properties_set_int( properties, "predictor", 0 );
-               mlt_properties_set_int( properties, "ildct", 0 );
-               mlt_properties_set_int( properties, "ilme", 0 );
+               // Audio options not fully handled by AVOptions
+#define QSCALE_NONE (-99999)
+               mlt_properties_set_int( properties, "aq", QSCALE_NONE );
+               
+               // Video options not fully handled by AVOptions
+               mlt_properties_set_int( properties, "dc", 8 );
+               
+               // Muxer options not fully handled by AVOptions
+               mlt_properties_set_double( properties, "muxdelay", 0.7 );
+               mlt_properties_set_double( properties, "muxpreload", 0.5 );
 
                // Ensure termination at end of the stream
                mlt_properties_set_int( properties, "terminate_on_pause", 1 );
+               
+               // Default to separate processing threads for producer and consumer with no frame dropping!
+               mlt_properties_set_int( properties, "real_time", -1 );
+               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 );
+               mlt_event event = mlt_events_listen( properties, consumer, "property-changed", ( mlt_listener )property_changed );
+               mlt_properties_set_data( properties, "property-changed event", event, 0, NULL, NULL );
        }
 
-       // Return this
-       return this;
+       // Return consumer
+       return consumer;
 }
 
-/** Start the consumer.
-*/
-
-static int consumer_start( mlt_consumer this )
+static void property_changed( mlt_properties owner, mlt_consumer self, char *name )
 {
-       // Get the properties
-       mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
+       mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
 
-       // Check that we're not already running
-       if ( !mlt_properties_get_int( properties, "running" ) )
+       if ( !strcmp( name, "s" ) )
        {
-               // Allocate a thread
-               pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
+               // Obtain the size property
+               char *size = mlt_properties_get( properties, "s" );
+               int width = mlt_properties_get_int( properties, "width" );
+               int height = mlt_properties_get_int( properties, "height" );
+               int tw, th;
+
+               if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
+               {
+                       width = tw;
+                       height = th;
+               }
+               else
+               {
+                       mlt_log_warning( MLT_CONSUMER_SERVICE(self), "Invalid size property %s - ignoring.\n", size );
+               }
 
-               // Get the width and height
+               // Now ensure we honour the multiple of two requested by libavformat
+               width = ( width / 2 ) * 2;
+               height = ( height / 2 ) * 2;
+               mlt_properties_set_int( properties, "width", width );
+               mlt_properties_set_int( properties, "height", height );
+       }
+       // "-aspect" on ffmpeg command line is display aspect ratio
+       else if ( !strcmp( name, "aspect" ) )
+       {
+               double ar = mlt_properties_get_double( properties, "aspect" );
+               AVRational rational = av_d2q( ar, 255 );
                int width = mlt_properties_get_int( properties, "width" );
                int height = mlt_properties_get_int( properties, "height" );
 
-               // Obtain the size property
-               char *size = mlt_properties_get( properties, "size" );
+               // Update the profile and properties as well since this is an alias
+               // 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 );
+
+               // Now compute the sample aspect ratio
+               rational = av_d2q( ar * height / FFMAX(width, 1), 255 );
+
+               // Update the profile and properties as well since this is an alias
+               // for mlt properties that correspond to profile settings
+               mlt_properties_set_int( properties, "sample_aspect_num", rational.num );
+               mlt_properties_set_int( properties, "sample_aspect_den", rational.den );
+       }
+       // Handle the ffmpeg command line "-r" property for frame rate
+       else if ( !strcmp( name, "r" ) )
+       {
+               double frame_rate = mlt_properties_get_double( properties, "r" );
+               AVRational rational = av_d2q( frame_rate, 255 );
+               mlt_properties_set_int( properties, "frame_rate_num", rational.num );
+               mlt_properties_set_int( properties, "frame_rate_den", rational.den );
+       }
+}
+
+/** Start the consumer.
+*/
+
+static int consumer_start( mlt_consumer consumer )
+{
+       // Get the properties
+       mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
+       int error = 0;
 
-               // Interpret it
-               if ( size != NULL )
+       // Report information about available muxers and codecs as YAML Tiny
+       char *s = mlt_properties_get( properties, "f" );
+       if ( s && strcmp( s, "list" ) == 0 )
+       {
+               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 ) ) )
                {
-                       int tw, th;
-                       if ( sscanf( size, "%dx%d", &tw, &th ) == 2 && tw > 0 && th > 0 )
+                       snprintf( key, sizeof(key), "%d", mlt_properties_count( formats ) );
+                       mlt_properties_set( formats, key, format->name );
+               }
+               s = mlt_properties_serialise_yaml( doc );
+               fprintf( stdout, "%s", s );
+               free( s );
+               mlt_properties_close( doc );
+               error = 1;
+       }
+       s = mlt_properties_get( properties, "acodec" );
+       if ( s && strcmp( s, "list" ) == 0 )
+       {
+               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 (defined(FFUDIV) && LIBAVCODEC_VERSION_INT >= ((54<<16)+(56<<8)+100)) || (LIBAVCODEC_VERSION_INT >= ((54<<16)+(27<<8)+0))
+                       if ( codec->encode2 && codec->type == CODEC_TYPE_AUDIO )
+#elif LIBAVCODEC_VERSION_INT >= ((54<<16)+(0<<8)+0)
+                       if ( ( codec->encode || codec->encode2 ) && codec->type == CODEC_TYPE_AUDIO )
+#else
+                       if ( codec->encode && codec->type == CODEC_TYPE_AUDIO )
+#endif
                        {
-                               width = tw;
-                               height = th;
+                               snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
+                               mlt_properties_set( codecs, key, codec->name );
                        }
-                       else
+               s = mlt_properties_serialise_yaml( doc );
+               fprintf( stdout, "%s", s );
+               free( s );
+               mlt_properties_close( doc );
+               error = 1;
+       }
+       s = mlt_properties_get( properties, "vcodec" );
+       if ( s && strcmp( s, "list" ) == 0 )
+       {
+               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 (defined(FFUDIV) && LIBAVCODEC_VERSION_INT >= ((54<<16)+(56<<8)+100)) || (LIBAVCODEC_VERSION_INT >= ((54<<16)+(27<<8)+0))
+                       if ( codec->encode2 && codec->type == CODEC_TYPE_VIDEO )
+#elif LIBAVCODEC_VERSION_INT >= ((54<<16)+(0<<8)+0)
+                       if ( (codec->encode || codec->encode2) && codec->type == CODEC_TYPE_VIDEO )
+#else
+                       if ( codec->encode && codec->type == CODEC_TYPE_VIDEO )
+#endif
                        {
-                               fprintf( stderr, "consumer_avformat: Invalid size property %s - ignoring.\n", size );
+                               snprintf( key, sizeof(key), "%d", mlt_properties_count( codecs ) );
+                               mlt_properties_set( codecs, key, codec->name );
                        }
-               }
-               
-               // Now ensure we honour the multiple of two requested by libavformat
-               mlt_properties_set_int( properties, "width", ( width / 2 ) * 2 );
-               mlt_properties_set_int( properties, "height", ( height / 2 ) * 2 );
+               s = mlt_properties_serialise_yaml( doc );
+               fprintf( stdout, "%s", s );
+               free( s );
+               mlt_properties_close( doc );
+               error = 1;
+       }
+
+       // Check that we're not already running
+       if ( !error && !mlt_properties_get_int( properties, "running" ) )
+       {
+               // Allocate a thread
+               pthread_t *thread = calloc( 1, sizeof( pthread_t ) );
+
+               mlt_event_block( mlt_properties_get_data( properties, "property-changed event", NULL ) );
+
+               // Apply AVOptions that are synonyms for standard mlt_consumer options
+               if ( mlt_properties_get( properties, "ac" ) )
+                       mlt_properties_set_int( properties, "channels", mlt_properties_get_int( properties, "ac" ) );
+               if ( mlt_properties_get( properties, "ar" ) )
+                       mlt_properties_set_int( properties, "frequency", mlt_properties_get_int( properties, "ar" ) );
 
                // Assign the thread to properties
                mlt_properties_set_data( properties, "thread", thread, sizeof( pthread_t ), free, NULL );
 
+               // Create the thread
+               pthread_create( thread, NULL, consumer_thread, consumer );
+
                // Set the running state
                mlt_properties_set_int( properties, "running", 1 );
-
-               // Create the thread
-               pthread_create( thread, NULL, consumer_thread, this );
        }
-       return 0;
+       return error;
 }
 
 /** 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 );
+       pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
 
        // Check that we're running
-       if ( mlt_properties_get_int( properties, "running" ) )
+       if ( thread )
        {
-               // Get the thread
-               pthread_t *thread = mlt_properties_get_data( properties, "thread", NULL );
-
                // Stop the thread
                mlt_properties_set_int( properties, "running", 0 );
 
                // Wait for termination
                pthread_join( *thread, NULL );
+
+               mlt_properties_set_data( properties, "thread", NULL, 0, NULL, NULL );
+               mlt_event_unblock( mlt_properties_get_data( properties, "property-changed event", NULL ) );
        }
 
        return 0;
@@ -304,59 +397,259 @@ 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 )
+{
+       int i;
+       int count = mlt_properties_count( properties );
+#if LIBAVUTIL_VERSION_INT < ((51<<16)+(12<<8)+0)
+       int alloc = 1;
+#endif
+
+       for ( i = 0; i < count; i++ )
+       {
+               const char *opt_name = mlt_properties_get_name( properties, i );
+#if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
+               const AVOption *opt = av_opt_find( obj, opt_name, NULL, flags, flags );
+#else
+               const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
+#endif
+
+               // If option not found, see if it was prefixed with a or v (-vb)
+               if ( !opt && (
+                       ( opt_name[0] == 'v' && ( flags & AV_OPT_FLAG_VIDEO_PARAM ) ) ||
+                       ( opt_name[0] == 'a' && ( flags & AV_OPT_FLAG_AUDIO_PARAM ) ) ) )
+#if LIBAVUTIL_VERSION_INT >= ((51<<16)+(10<<8)+0)
+                       opt = av_opt_find( obj, ++opt_name, NULL, flags, flags );
+#else
+                       opt = av_find_opt( obj, ++opt_name, NULL, flags, flags );
+#endif
+               // Apply option if found
+               if ( opt )
+#if LIBAVUTIL_VERSION_INT >= ((51<<16)+(12<<8)+0)
+                       av_opt_set( obj, opt_name, mlt_properties_get_value( properties, i), 0 );
+#else
+                       av_set_string3( obj, opt_name, mlt_properties_get_value( properties, i), alloc, NULL );
+#endif
+       }
+}
+
+static enum PixelFormat pick_pix_fmt( mlt_image_format img_fmt )
+{
+       switch ( img_fmt )
+       {
+       case mlt_image_rgb24:
+               return PIX_FMT_RGB24;
+       case mlt_image_rgb24a:
+               return PIX_FMT_RGBA;
+       case mlt_image_yuv420p:
+               return PIX_FMT_YUV420P;
+       default:
+               return PIX_FMT_YUYV422;
+       }
+}
+
+static int get_mlt_audio_format( int av_sample_fmt )
+{
+       switch ( av_sample_fmt )
+       {
+       case AV_SAMPLE_FMT_U8:
+               return mlt_audio_u8;
+       case AV_SAMPLE_FMT_S32:
+               return mlt_audio_s32le;
+       case AV_SAMPLE_FMT_FLT:
+               return mlt_audio_f32le;
+#if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
+       case AV_SAMPLE_FMT_U8P:
+               return mlt_audio_u8;
+       case AV_SAMPLE_FMT_S32P:
+               return mlt_audio_s32le;
+       case AV_SAMPLE_FMT_FLTP:
+               return mlt_audio_f32le;
+#endif
+       default:
+               return mlt_audio_s16;
+       }
+}
+
+static int pick_sample_fmt( mlt_properties properties, AVCodec *codec )
+{
+       int sample_fmt = AV_SAMPLE_FMT_S16;
+       const char *format = mlt_properties_get( properties, "mlt_audio_format" );
+       const int *p = codec->sample_fmts;
+
+       // get default av_sample_fmt from mlt_audio_format
+       if ( format )
+       {
+               if ( !strcmp( format, "s32le" ) )
+                       sample_fmt = AV_SAMPLE_FMT_S32;
+               else if ( !strcmp( format, "f32le" ) )
+                       sample_fmt = AV_SAMPLE_FMT_FLT;
+               else if ( !strcmp( format, "u8" ) )
+                       sample_fmt = AV_SAMPLE_FMT_U8;
+#if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
+               else if ( !strcmp( format, "s32" ) )
+                       sample_fmt = AV_SAMPLE_FMT_S32P;
+               else if ( !strcmp( format, "float" ) )
+                       sample_fmt = AV_SAMPLE_FMT_FLTP;
+#endif
+       }
+       // check if codec supports our mlt_audio_format
+       for ( ; *p != -1; p++ )
+       {
+               if ( *p == sample_fmt )
+                       return sample_fmt;
+       }
+       // no match - pick first one we support
+       for ( p = codec->sample_fmts; *p != -1; p++ )
+       {
+               switch (*p)
+               {
+               case AV_SAMPLE_FMT_U8:
+               case AV_SAMPLE_FMT_S16:
+               case AV_SAMPLE_FMT_S32:
+               case AV_SAMPLE_FMT_FLT:
+#if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
+               case AV_SAMPLE_FMT_U8P:
+               case AV_SAMPLE_FMT_S16P:
+               case AV_SAMPLE_FMT_S32P:
+               case AV_SAMPLE_FMT_FLTP:
+#endif
+                       return *p;
+               default:
+                       break;
+               }
+       }
+       mlt_log_error( properties, "audio codec sample_fmt not compatible" );
+
+       return AV_SAMPLE_FMT_NONE;
+}
+
+static uint8_t* interleaved_to_planar( int samples, int channels, uint8_t* audio, int bytes_per_sample )
+{
+       uint8_t *buffer = mlt_pool_alloc( AUDIO_ENCODE_BUFFER_SIZE );
+       uint8_t *p = buffer;
+       int c;
+
+       memset( buffer, 0, AUDIO_ENCODE_BUFFER_SIZE );
+       for ( c = 0; c < channels; c++ )
+       {
+               uint8_t *q = audio + c * bytes_per_sample;
+               int i = samples + 1;
+               while ( --i )
+               {
+                       memcpy( p, q, bytes_per_sample );
+                       p += bytes_per_sample;
+                       q += channels * bytes_per_sample;
+               }
+       }
+       return buffer;
+}
+
 /** 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, AVCodec *codec, 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 );
+#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(10<<8)+0)
+       AVStream *st = avformat_new_stream( oc, codec );
+#else
+       AVStream *st = av_new_stream( oc, oc->nb_streams );
+#endif
 
        // If created, then initialise from properties
        if ( st != NULL ) 
        {
                AVCodecContext *c = st->codec;
-               c->codec_id = codec_id;
-               c->codec_type = CODEC_TYPE_AUDIO;
-
-               // Put sample parameters
-               c->bit_rate = mlt_properties_get_int( properties, "audio_bit_rate" );
-               c->sample_rate = mlt_properties_get_int( properties, "frequency" );
-               c->channels = mlt_properties_get_int( properties, "channels" );
 
-       if (oc->oformat->flags & AVFMT_GLOBALHEADER) 
-               c->flags |= CODEC_FLAG_GLOBAL_HEADER;
+               // Establish defaults from AVOptions
+#if LIBAVCODEC_VERSION_MAJOR >= 53
+               avcodec_get_context_defaults3( c, codec );
+#else
+               avcodec_get_context_defaults2( c, CODEC_TYPE_AUDIO );
+#endif
 
+               c->codec_id = codec->id;
+               c->codec_type = CODEC_TYPE_AUDIO;
+               c->sample_fmt = pick_sample_fmt( properties, codec );
+
+#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 )
+                       c->thread_count = thread_count;
+#endif
+       
+               if (oc->oformat->flags & AVFMT_GLOBALHEADER) 
+                       c->flags |= CODEC_FLAG_GLOBAL_HEADER;
+               
                // Allow the user to override the audio fourcc
-               if ( mlt_properties_get( properties, "afourcc" ) )
+               if ( mlt_properties_get( properties, "atag" ) )
                {
                        char *tail = NULL;
-                       char *arg = mlt_properties_get( properties, "afourcc" );
-               int tag = strtol( arg, &tail, 0);
-               if( !tail || *tail )
-                       tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
+                       char *arg = mlt_properties_get( properties, "atag" );
+                       int tag = strtol( arg, &tail, 0);
+                       if( !tail || *tail )
+                               tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
                        c->codec_tag = tag;
                }
+
+               // Process properties as AVOptions
+               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 );
+                       mlt_properties_close( p );
+               }
+               apply_properties( c, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
+
+               int audio_qscale = mlt_properties_get_int( properties, "aq" );
+               if ( audio_qscale > QSCALE_NONE )
+               {
+                       c->flags |= CODEC_FLAG_QSCALE;
+                       c->global_quality = FF_QP2LAMBDA * audio_qscale;
+#if LIBAVFORMAT_VERSION_MAJOR < 53
+                       st->quality = c->global_quality;
+#endif
+               }
+
+               // Set parameters controlled by MLT
+               c->sample_rate = mlt_properties_get_int( properties, "frequency" );
+               c->time_base = ( AVRational ){ 1, c->sample_rate };
+               c->channels = channels;
+
+               if ( mlt_properties_get( properties, "alang" ) != NULL )
+#if LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
+                       av_dict_set( &oc->metadata, "language", mlt_properties_get( properties, "alang" ), 0 );
+#else
+                       av_metadata_set2( &oc->metadata, "language", mlt_properties_get( properties, "alang" ), 0 );
+#endif
        }
        else
        {
-               fprintf( stderr, "Could not allocate a stream for audio\n" );
+               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( mlt_properties properties, 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;
@@ -365,10 +658,37 @@ 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 );
+
+       // Process properties as AVOptions on the AVCodec
+       if ( codec && codec->priv_class )
+       {
+               char *apre = mlt_properties_get( properties, "apre" );
+               if ( !c->priv_data && codec->priv_data_size )
+               {
+                       c->priv_data = av_mallocz( codec->priv_data_size );
+                       *(const AVClass **) c->priv_data = codec->priv_class;
+//                     av_opt_set_defaults( c );
+               }
+               if ( apre )
+               {
+                       mlt_properties p = mlt_properties_load( apre );
+                       apply_properties( c->priv_data, p, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
+                       mlt_properties_close( p );
+               }
+               apply_properties( c->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
+       }
 
        // Continue if codec found and we can open it
-       if ( codec != NULL && avcodec_open(c, codec) >= 0 )
+#if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
+       if ( codec && avcodec_open2( c, codec, NULL ) >= 0 )
+#else
+       if ( codec && avcodec_open( c, codec ) >= 0 )
+#endif
        {
                // ugly hack for PCM codecs (will be removed ASAP with new PCM
                // support to compute the input frame size in samples
@@ -377,10 +697,10 @@ static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size
                        audio_input_frame_size = audio_outbuf_size / c->channels;
                        switch(st->codec->codec_id) 
                        {
-                               case CODEC_ID_PCM_S16LE:
-                               case CODEC_ID_PCM_S16BE:
-                               case CODEC_ID_PCM_U16LE:
-                               case CODEC_ID_PCM_U16BE:
+                               case AV_CODEC_ID_PCM_S16LE:
+                               case AV_CODEC_ID_PCM_S16BE:
+                               case AV_CODEC_ID_PCM_U16LE:
+                               case AV_CODEC_ID_PCM_U16BE:
                                        audio_input_frame_size >>= 1;
                                        break;
                                default:
@@ -393,14 +713,15 @@ 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, "Unable to encode audio - disabling audio output.\n" );
+               mlt_log_warning( NULL, "%s: Unable to encode audio - disabling audio output.\n", __FILE__ );
+               audio_input_frame_size = 0;
        }
 
        return audio_input_frame_size;
@@ -408,83 +729,147 @@ static int open_audio( AVFormatContext *oc, AVStream *st, int audio_outbuf_size
 
 static void close_audio( AVFormatContext *oc, AVStream *st )
 {
-       avcodec_close( st->codec );
+       if ( st && st->codec )
+               avcodec_close( st->codec );
 }
 
 /** 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, AVCodec *codec )
 {
        // 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 );
+#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(10<<8)+0)
+       AVStream *st = avformat_new_stream( oc, codec );
+#else
+       AVStream *st = av_new_stream( oc, oc->nb_streams );
+#endif
 
        if ( st != NULL ) 
        {
                char *pix_fmt = mlt_properties_get( properties, "pix_fmt" );
-               double ar = mlt_properties_get_double( properties, "display_ratio" );
                AVCodecContext *c = st->codec;
-               c->codec_id = codec_id;
+
+               // Establish defaults from AVOptions
+#if LIBAVCODEC_VERSION_MAJOR >= 53
+               avcodec_get_context_defaults3( c, codec );
+#else
+               avcodec_get_context_defaults2( c, CODEC_TYPE_VIDEO );
+#endif
+
+               c->codec_id = codec->id;
                c->codec_type = CODEC_TYPE_VIDEO;
+               
+               // 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 )
+#if LIBAVCODEC_VERSION_MAJOR >= 53
+                       c->thread_count = thread_count;
+#else
+                       avcodec_thread_init( c, thread_count );
+#endif
 
-               // put sample parameters
-               c->bit_rate = mlt_properties_get_int( properties, "video_bit_rate" );
-               c->bit_rate_tolerance = mlt_properties_get_int( properties, "video_bit_rate_tolerance" );
+               // Process properties as AVOptions
+               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 );
+                                       if ( mlt_properties_count( p ) > 0 )
+                                               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 );
+                       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 );
+               mlt_properties_set_int( properties, "colorspace", colorspace );
+
+               // Set options controlled by MLT
                c->width = mlt_properties_get_int( properties, "width" );
                c->height = mlt_properties_get_int( properties, "height" );
                c->time_base.num = mlt_properties_get_int( properties, "frame_rate_den" );
                c->time_base.den = mlt_properties_get_int( properties, "frame_rate_num" );
-               c->gop_size = mlt_properties_get_int( properties, "gop_size" );
-               c->pix_fmt = pix_fmt ? avcodec_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
-
-               if ( mlt_properties_get_int( properties, "b_frames" ) )
+               if ( st->time_base.den == 0 )
+                       st->time_base = c->time_base;
+               c->pix_fmt = pix_fmt ? av_get_pix_fmt( pix_fmt ) : PIX_FMT_YUV420P;
+               
+               switch ( colorspace )
                {
-                       c->max_b_frames = mlt_properties_get_int( properties, "b_frames" );
-                       c->b_frame_strategy = 0;
-                       c->b_quant_factor = 2.0;
+               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;
                }
 
-               c->mb_decision = mlt_properties_get_int( properties, "mb_decision" );
-               c->sample_aspect_ratio = av_d2q( ar * c->height / c->width , 255);
-               c->mb_cmp = mlt_properties_get_int( properties, "mb_cmp" );
-               c->ildct_cmp = mlt_properties_get_int( properties, "ildct_cmp" );
-               c->me_sub_cmp = mlt_properties_get_int( properties, "sub_cmp" );
-               c->me_cmp = mlt_properties_get_int( properties, "cmp" );
-               c->me_pre_cmp = mlt_properties_get_int( properties, "pre_cmp" );
-               c->pre_me = mlt_properties_get_int( properties, "pre_me" );
-               c->lumi_masking = mlt_properties_get_double( properties, "lumi_mask" );
-               c->dark_masking = mlt_properties_get_double( properties, "dark_mask" );
-               c->spatial_cplx_masking = mlt_properties_get_double( properties, "scplx_mask" );
-               c->temporal_cplx_masking = mlt_properties_get_double( properties, "tcplx_mask" );
-               c->p_masking = mlt_properties_get_double( properties, "p_mask" );
-               c->quantizer_noise_shaping= mlt_properties_get_int( properties, "qns" );
-               c->qmin = mlt_properties_get_int( properties, "video_qmin" );
-               c->qmax = mlt_properties_get_int( properties, "video_qmax" );
-               c->lmin = mlt_properties_get_int( properties, "video_lmin" );
-               c->lmax = mlt_properties_get_int( properties, "video_lmax" );
-               c->mb_qmin = mlt_properties_get_int( properties, "video_mb_qmin" );
-               c->mb_qmax = mlt_properties_get_int( properties, "video_mb_qmax" );
-               c->max_qdiff = mlt_properties_get_int( properties, "video_qdiff" );
-               c->qblur = mlt_properties_get_double( properties, "video_qblur" );
-               c->qcompress = mlt_properties_get_double( properties, "video_qcomp" );
+               if ( mlt_properties_get( properties, "aspect" ) )
+               {
+                       // "-aspect" on ffmpeg command line is display aspect ratio
+                       double ar = mlt_properties_get_double( properties, "aspect" );
+                       c->sample_aspect_ratio = av_d2q( ar * c->height / c->width, 255 );
+               }
+               else
+               {
+                       c->sample_aspect_ratio.num = mlt_properties_get_int( properties, "sample_aspect_num" );
+                       c->sample_aspect_ratio.den = mlt_properties_get_int( properties, "sample_aspect_den" );
+               }
+               st->sample_aspect_ratio = c->sample_aspect_ratio;
 
                if ( mlt_properties_get_double( properties, "qscale" ) > 0 )
                {
                        c->flags |= CODEC_FLAG_QSCALE;
-                       st->quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
+                       c->global_quality = FF_QP2LAMBDA * mlt_properties_get_double( properties, "qscale" );
+#if LIBAVFORMAT_VERSION_MAJOR < 53
+                       st->quality = c->global_quality;
+#endif
                }
 
                // Allow the user to override the video fourcc
-               if ( mlt_properties_get( properties, "vfourcc" ) )
+               if ( mlt_properties_get( properties, "vtag" ) )
                {
                        char *tail = NULL;
-                       const char *arg = mlt_properties_get( properties, "vfourcc" );
-               int tag = strtol( arg, &tail, 0);
-               if( !tail || *tail )
-                       tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
+                       const char *arg = mlt_properties_get( properties, "vtag" );
+                       int tag = strtol( arg, &tail, 0);
+                       if( !tail || *tail )
+                               tag = arg[ 0 ] + ( arg[ 1 ] << 8 ) + ( arg[ 2 ] << 16 ) + ( arg[ 3 ] << 24 );
                        c->codec_tag = tag;
                }
 
@@ -492,44 +877,104 @@ static AVStream *add_video_stream( mlt_consumer this, AVFormatContext *oc, int c
                if ( oc->oformat->flags & AVFMT_GLOBALHEADER ) 
                        c->flags |= CODEC_FLAG_GLOBAL_HEADER;
 
-               c->rc_max_rate = mlt_properties_get_int( properties, "video_rc_max_rate" );
-               c->rc_min_rate = mlt_properties_get_int( properties, "video_rc_min_rate" );
-               c->rc_buffer_size = mlt_properties_get_int( properties, "video_rc_buffer_size" );
-               c->rc_initial_buffer_occupancy = c->rc_buffer_size*3/4;
-               c->rc_buffer_aggressivity= mlt_properties_get_double( properties, "video_rc_buffer_aggressivity" );
-               c->rc_initial_cplx= mlt_properties_get_double( properties, "video_rc_initial_cplx" );
-               c->i_quant_factor = mlt_properties_get_double( properties, "video_i_qfactor" );
-               c->b_quant_factor = mlt_properties_get_double( properties, "video_b_qfactor" );
-               c->i_quant_offset = mlt_properties_get_double( properties, "video_i_qoffset" );
-               c->b_quant_offset = mlt_properties_get_double( properties, "video_b_qoffset" );
-               c->intra_quant_bias = mlt_properties_get_int( properties, "video_intra_quant_bias" );
-               c->inter_quant_bias = mlt_properties_get_int( properties, "video_inter_quant_bias" );
-               c->dct_algo = mlt_properties_get_int( properties, "dct_algo" );
-               c->idct_algo = mlt_properties_get_int( properties, "idct_algo" );
-               c->me_threshold= mlt_properties_get_int( properties, "me_threshold" );
-               c->mb_threshold= mlt_properties_get_int( properties, "mb_threshold" );
-               c->intra_dc_precision= mlt_properties_get_int( properties, "intra_dc_precision" );
-               c->strict_std_compliance = mlt_properties_get_int( properties, "strict" );
-               c->error_rate = mlt_properties_get_int( properties, "error_rate" );
-               c->noise_reduction= mlt_properties_get_int( properties, "noise_reduction" );
-               c->scenechange_threshold= mlt_properties_get_int( properties, "sc_threshold" );
-               c->me_range = mlt_properties_get_int( properties, "me_range" );
-               c->coder_type= mlt_properties_get_int( properties, "coder" );
-               c->context_model= mlt_properties_get_int( properties, "context" );
-               c->prediction_method= mlt_properties_get_int( properties, "predictor" );
-               c->me_method = mlt_properties_get_int( properties, "me_method" );
+               // Translate these standard mlt consumer properties to ffmpeg
                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;
                }
-       }
+               
+               // parse the ratecontrol override string
+               int i;
+               char *rc_override = mlt_properties_get( properties, "rc_override" );
+               for ( i = 0; rc_override; i++ )
+               {
+                       int start, end, q;
+                       int e = sscanf( rc_override, "%d,%d,%d", &start, &end, &q );
+                       if ( e != 3 )
+                               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;
+                       if ( q > 0 )
+                       {
+                               c->rc_override[i].qscale = q;
+                               c->rc_override[i].quality_factor = 1.0;
+                       }
+                       else
+                       {
+                               c->rc_override[i].qscale = 0;
+                               c->rc_override[i].quality_factor = -q / 100.0;
+                       }
+                       rc_override = strchr( rc_override, '/' );
+                       if ( rc_override )
+                               rc_override++;
+               }
+               c->rc_override_count = i;
+               if ( !c->rc_initial_buffer_occupancy )
+                       c->rc_initial_buffer_occupancy = c->rc_buffer_size * 3/4;
+               c->intra_dc_precision = mlt_properties_get_int( properties, "dc" ) - 8;
+
+               // Setup dual-pass
+               i = mlt_properties_get_int( properties, "pass" );
+               if ( i == 1 )
+                       c->flags |= CODEC_FLAG_PASS1;
+               else if ( i == 2 )
+                       c->flags |= CODEC_FLAG_PASS2;
+               if ( codec->id != AV_CODEC_ID_H264 && ( c->flags & ( CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2 ) ) )
+               {
+                       char logfilename[1024];
+                       FILE *f;
+                       int size;
+                       char *logbuffer;
+
+                       snprintf( logfilename, sizeof(logfilename), "%s_2pass.log",
+                               mlt_properties_get( properties, "passlogfile" ) ? mlt_properties_get( properties, "passlogfile" ) : mlt_properties_get( properties, "target" ) );
+                       if ( c->flags & CODEC_FLAG_PASS1 )
+                       {
+                               f = fopen( logfilename, "w" );
+                               if ( !f )
+                                       perror( logfilename );
+                               else
+                                       mlt_properties_set_data( properties, "_logfile", f, 0, ( mlt_destructor )fclose, NULL );
+                       }
+                       else
+                       {
+                               /* read the log file */
+                               f = fopen( logfilename, "r" );
+                               if ( !f )
+                               {
+                                       perror(logfilename);
+                               }
+                               else
+                               {
+                                       mlt_properties_set( properties, "_logfilename", logfilename );
+                                       fseek( f, 0, SEEK_END );
+                                       size = ftell( f );
+                                       fseek( f, 0, SEEK_SET );
+                                       logbuffer = av_malloc( size + 1 );
+                                       if ( !logbuffer )
+                                               mlt_log_fatal( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate log buffer\n" );
+                                       else
+                                       {
+                                               if ( size >= 0 )
+                                               {
+                                                       size = fread( logbuffer, 1, size, f );
+                                                       logbuffer[size] = '\0';
+                                                       c->stats_in = logbuffer;
+                                               }
+                                       }
+                                       fclose( f );
+                               }
+                       }
+               }
+       }
        else
        {
-               fprintf( stderr, "Could not allocate a stream for video\n" );
+               mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not allocate a stream for video\n" );
        }
  
        return st;
@@ -541,10 +986,10 @@ static AVFrame *alloc_picture( int pix_fmt, int width, int height )
        AVFrame *picture = avcodec_alloc_frame();
 
        // Determine size of the 
-       int size = avpicture_get_size(pix_fmt, width, height);
+       int size = avpicture_get_size(pix_fmt, width, height);
 
        // Allocate the picture buf
-       uint8_t *picture_buf = av_malloc(size);
+       uint8_t *picture_buf = av_malloc(size);
 
        // If we have both, then fill the image
        if ( picture != NULL && picture_buf != NULL )
@@ -562,14 +1007,37 @@ 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( mlt_properties properties, 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 );
+
+       // Process properties as AVOptions on the AVCodec
+       if ( codec && codec->priv_class )
+       {
+               char *vpre = mlt_properties_get( properties, "vpre" );
+               if ( !video_enc->priv_data && codec->priv_data_size )
+               {
+                       video_enc->priv_data = av_mallocz( codec->priv_data_size );
+                       *(const AVClass **) video_enc->priv_data = codec->priv_class;
+//                     av_opt_set_defaults( video_enc );
+               }
+               if ( vpre )
+               {
+                       mlt_properties p = mlt_properties_load( vpre );
+                       apply_properties( video_enc->priv_data, p, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
+                       mlt_properties_close( p );
+               }
+               apply_properties( video_enc->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM );
+       }
 
        if( codec && codec->pix_fmts )
        {
@@ -583,13 +1051,22 @@ static int open_video(AVFormatContext *oc, AVStream *st)
                        video_enc->pix_fmt = codec->pix_fmts[ 0 ];
        }
 
-       // Open the codec safely
-       return codec != NULL && avcodec_open( video_enc, codec ) >= 0;
+#if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
+       int result = codec && avcodec_open2( video_enc, codec, NULL ) >= 0;
+#else
+       int result = codec && avcodec_open( video_enc, codec ) >= 0;
+#endif
+       
+       return result;
 }
 
 void close_video(AVFormatContext *oc, AVStream *st)
 {
-       avcodec_close(st->codec);
+       if ( st && st->codec )
+       {
+               av_freep( &st->codec->stats_in );
+               avcodec_close(st->codec);
+       }
 }
 
 static inline long time_difference( struct timeval *time1 )
@@ -599,16 +1076,29 @@ static inline long time_difference( struct timeval *time1 )
        return time2.tv_sec * 1000000 + time2.tv_usec - time1->tv_sec * 1000000 - time1->tv_usec;
 }
 
+static int mlt_write(void *h, uint8_t *buf, int size)
+{
+       mlt_properties properties = (mlt_properties) h;
+       mlt_events_fire( properties, "avformat-write", buf, &size, NULL );
+       return 0;
+}
+
+static void write_transmitter( mlt_listener listener, mlt_properties owner, mlt_service service, void **args )
+{
+       int *p_size = (int*) args[1];
+       listener( owner, service, (uint8_t*) args[0], *p_size );
+}
+
 /** The main thread - the argument is simply the consumer.
 */
 
 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" );
@@ -630,20 +1120,20 @@ static void *consumer_thread( void *arg )
        int img_height = height;
 
        // Get default audio properties
-       mlt_audio_format aud_fmt = mlt_audio_pcm;
        int channels = mlt_properties_get_int( properties, "channels" );
+       int total_channels = channels;
        int frequency = mlt_properties_get_int( properties, "frequency" );
-       int16_t *pcm = NULL;
+       void *pcm = NULL;
        int samples = 0;
 
        // AVFormat audio buffer and frame size
-       int audio_outbuf_size = 10000;
-       uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
-       int audio_input_frame_size = 0;
+       int audio_outbuf_size = AUDIO_BUFFER_SIZE;
+       uint8_t *audio_outbuf = av_malloc( audio_outbuf_size );
+       int audio_input_nb_samples = 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
@@ -654,184 +1144,387 @@ static void *consumer_thread( void *arg )
        mlt_deque queue = mlt_properties_get_data( properties, "frame_queue", NULL );
        sample_fifo fifo = mlt_properties_get_data( properties, "sample_fifo", NULL );
 
-       // Need two av pictures for converting
-       AVFrame *output = NULL;
-       AVFrame *input = alloc_picture( PIX_FMT_YUV422, width, height );
-
        // For receiving images from an mlt_frame
        uint8_t *image;
        mlt_image_format img_fmt = mlt_image_yuv422;
+       // Get the image format to use for rendering threads
+       const char* img_fmt_name = mlt_properties_get( properties, "mlt_image_format" );
+       if ( img_fmt_name )
+       {
+               if ( !strcmp( img_fmt_name, "rgb24" ) )
+                       img_fmt = mlt_image_rgb24;
+               else if ( !strcmp( img_fmt_name, "rgb24a" ) )
+                       img_fmt = mlt_image_rgb24a;
+               else if ( !strcmp( img_fmt_name, "yuv420p" ) )
+                       img_fmt = mlt_image_yuv420p;
+       }
+       else if ( mlt_properties_get( properties, "pix_fmt" ) )
+       {
+               img_fmt_name = mlt_properties_get( properties, "pix_fmt" );
+               if ( !strcmp( img_fmt_name, "rgba" ) ||
+                    !strcmp( img_fmt_name, "argb" ) ||
+                    !strcmp( img_fmt_name, "bgra" ) )
+                       img_fmt = mlt_image_rgb24a;
+       }
+
+       // Need two av pictures for converting
+       AVFrame *converted_avframe = NULL;
+       AVFrame *audio_avframe = NULL;
+       AVFrame *video_avframe = alloc_picture( pick_pix_fmt( img_fmt ), width, height );
 
        // For receiving audio samples back from the fifo
-       int16_t *buffer = av_malloc( 48000 * 2 );
+       uint8_t *audio_buf_1 = av_malloc( AUDIO_ENCODE_BUFFER_SIZE );
+       uint8_t *audio_buf_2 = NULL;
        int count = 0;
 
        // Allocate the context
-       AVFormatContext *oc = av_alloc_format_context( );
+       AVFormatContext *oc = NULL;
 
        // 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;
 
        // Determine the format
        AVOutputFormat *fmt = NULL;
-       char *filename = mlt_properties_get( properties, "target" );
-       char *format = mlt_properties_get( properties, "format" );
+       const char *filename = mlt_properties_get( properties, "target" );
+       char *format = mlt_properties_get( properties, "f" );
        char *vcodec = mlt_properties_get( properties, "vcodec" );
        char *acodec = mlt_properties_get( properties, "acodec" );
-
+       AVCodec *audio_codec = NULL;
+       AVCodec *video_codec = NULL;
+       
        // Used to store and override codec ids
        int audio_codec_id;
        int video_codec_id;
 
+       // Misc
+       char key[27];
+       mlt_properties frame_meta_properties = mlt_properties_new();
+       int error_count = 0;
+       int64_t synth_audio_pts = 0;
+
+       // Initialize audio_st
+       int i = MAX_AUDIO_STREAMS;
+       while ( i-- )
+               audio_st[i] = NULL;
+
        // Check for user selected format first
        if ( format != NULL )
-               fmt = guess_format( format, NULL, NULL );
+               fmt = av_guess_format( format, NULL, NULL );
 
        // Otherwise check on the filename
        if ( fmt == NULL && filename != NULL )
-               fmt = guess_format( NULL, filename, NULL );
+               fmt = av_guess_format( NULL, filename, NULL );
 
        // Otherwise default to mpeg
        if ( fmt == NULL )
-               fmt = guess_format( "mpeg", NULL, NULL );
+               fmt = av_guess_format( "mpeg", NULL, NULL );
 
        // We need a filename - default to stdout?
        if ( filename == NULL || !strcmp( filename, "" ) )
                filename = "pipe:";
 
+#if LIBAVUTIL_VERSION_INT >= ((53<<16)+(2<<8)+0)
+       avformat_alloc_output_context2( &oc, fmt, format, filename );
+#else
+       oc = avformat_alloc_context( );
+       oc->oformat = fmt;
+       snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
+
+       if ( oc->oformat && oc->oformat->priv_class && !oc->priv_data && oc->oformat->priv_data_size ) {
+               oc->priv_data = av_mallocz( oc->oformat->priv_data_size );
+               if ( oc->priv_data ) {
+                       *(const AVClass**)oc->priv_data = oc->oformat->priv_class;
+                       av_opt_set_defaults( oc->priv_data );
+               }
+       }
+#endif
+
        // Get the codec ids selected
        audio_codec_id = fmt->audio_codec;
        video_codec_id = fmt->video_codec;
 
        // Check for audio codec overides
-       if ( acodec != NULL )
+       if ( ( acodec && strcmp( acodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "an" ) )
+               audio_codec_id = AV_CODEC_ID_NONE;
+       else if ( acodec )
        {
-               AVCodec *p = first_avcodec;
-               while( p != NULL ) 
+               audio_codec = avcodec_find_encoder_by_name( acodec );
+               if ( audio_codec )
                {
-                       if ( !strcmp( p->name, acodec ) && p->type == CODEC_TYPE_AUDIO )
-                               break;
-                       p = p->next;
+                       audio_codec_id = audio_codec->id;
+                       if ( audio_codec_id == AV_CODEC_ID_AC3 && avcodec_find_encoder_by_name( "ac3_fixed" ) )
+                       {
+                               mlt_properties_set( properties, "_acodec", "ac3_fixed" );
+                               acodec = mlt_properties_get( properties, "_acodec" );
+                               audio_codec = avcodec_find_encoder_by_name( acodec );
+                       }
+                       else if ( !strcmp( acodec, "aac" ) || !strcmp( acodec, "vorbis" ) )
+                       {
+                               mlt_properties_set( properties, "astrict", "experimental" );
+                       }
                }
-               if ( p != NULL )
-                       audio_codec_id = p->id;
                else
-                       fprintf( stderr, "consumer_avcodec: audio codec %s unrecognised - ignoring\n", acodec );
+               {
+                       audio_codec_id = AV_CODEC_ID_NONE;
+                       mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "audio codec %s unrecognised - ignoring\n", acodec );
+               }
+       }
+       else
+       {
+               audio_codec = avcodec_find_encoder( audio_codec_id );
        }
 
        // Check for video codec overides
-       if ( vcodec != NULL )
+       if ( ( vcodec && strcmp( vcodec, "none" ) == 0 ) || mlt_properties_get_int( properties, "vn" ) )
+               video_codec_id = AV_CODEC_ID_NONE;
+       else if ( vcodec )
        {
-               AVCodec *p = first_avcodec;
-               while( p != NULL ) 
+               video_codec = avcodec_find_encoder_by_name( vcodec );
+               if ( video_codec )
                {
-                       if ( !strcmp( p->name, vcodec ) && p->type == CODEC_TYPE_VIDEO )
-                               break;
-                       p = p->next;
+                       video_codec_id = video_codec->id;
                }
-               if ( p != NULL )
-                       video_codec_id = p->id;
                else
-                       fprintf( stderr, "consumer_avcodec: video codec %s unrecognised - ignoring\n", vcodec );
+               {
+                       video_codec_id = AV_CODEC_ID_NONE;
+                       mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "video codec %s unrecognised - ignoring\n", vcodec );
+               }
+       }
+       else
+       {
+               video_codec = avcodec_find_encoder( video_codec_id );
        }
-
-       // Update the output context
 
        // Write metadata
-       char *tmp = NULL;
-       int metavalue;
-
-       tmp = mlt_properties_get( properties, "meta.attr.title.markup");
-       if (tmp != NULL) snprintf( oc->title, sizeof(oc->title), "%s", tmp );
-
-       tmp = mlt_properties_get( properties, "meta.attr.comment.markup");
-       if (tmp != NULL) snprintf( oc->comment, sizeof(oc->comment), "%s", tmp );
-
-       tmp = mlt_properties_get( properties, "meta.attr.author.markup");
-       if (tmp != NULL) snprintf( oc->author, sizeof(oc->author), "%s", tmp );
-
-       tmp = mlt_properties_get( properties, "meta.attr.copyright.markup");
-       if (tmp != NULL) snprintf( oc->copyright, sizeof(oc->copyright), "%s", tmp );
-
-       tmp = mlt_properties_get( properties, "meta.attr.album.markup");
-       if (tmp != NULL) snprintf( oc->album, sizeof(oc->album), "%s", tmp );
-
-       metavalue = mlt_properties_get_int( properties, "meta.attr.year.markup");
-       if (metavalue != 0) oc->year = metavalue;
+       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 LIBAVUTIL_VERSION_INT >= ((51<<16)+(8<<8)+0)
+                                       av_dict_set( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
+#else
+                                       av_metadata_set2( &oc->metadata, key, mlt_properties_get_value( properties, i ), 0 );
+#endif
+                       }
+                       free( key );
+               }
+       }
 
-       metavalue = mlt_properties_get_int( properties, "meta.attr.track.markup");
-       if (metavalue != 0) oc->track = metavalue;
+       // Get a frame now, so we can set some AVOptions from properties.
+       frame = mlt_consumer_rt_frame( consumer );
+
+       // Set the timecode from the MLT metadata if available.
+    if ( frame )
+    {
+        const char *timecode = mlt_properties_get( MLT_FRAME_PROPERTIES(frame), "meta.attr.vitc.markup" );
+        if ( timecode && strcmp( timecode, "" ) )
+        {
+            mlt_properties_set( properties, "timecode", timecode );
+            if ( strchr( timecode, ';' ) )
+                mlt_properties_set_int( properties, "drop_frame_timecode", 1 );
+        }
+    }
+
+       // Add audio and video streams
+       if ( video_codec_id != AV_CODEC_ID_NONE )
+               video_st = add_video_stream( consumer, oc, video_codec );
+       if ( audio_codec_id != AV_CODEC_ID_NONE )
+       {
+               int is_multi = 0;
 
-       oc->oformat = fmt;
-       snprintf( oc->filename, sizeof(oc->filename), "%s", filename );
+               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, j );
+                       }
+               }
+               // single track
+               if ( !is_multi )
+               {
+                       audio_st[0] = add_audio_stream( consumer, oc, audio_codec, channels );
+                       total_channels = channels;
+               }
+       }
+       mlt_properties_set_int( properties, "channels", total_channels );
 
-       // Add audio and video streams 
-       if ( fmt->video_codec != CODEC_ID_NONE )
-               video_st = add_video_stream( this, oc, video_codec_id );
-       if ( fmt->audio_codec != CODEC_ID_NONE )
-               audio_st = add_audio_stream( this, oc, audio_codec_id );
+       // Audio format is determined when adding the audio stream
+       mlt_audio_format aud_fmt = mlt_audio_none;
+       if ( audio_st[0] )
+               aud_fmt = get_mlt_audio_format( audio_st[0]->codec->sample_fmt );
+       int sample_bytes = mlt_audio_format_size( aud_fmt, 1, 1 );
+       sample_bytes = sample_bytes ? sample_bytes : 1; // prevent divide by zero
 
        // Set the parameters (even though we have none...)
-       if ( av_set_parameters(oc, NULL) >= 0 ) 
+#if LIBAVFORMAT_VERSION_INT < ((53<<16)+(2<<8)+0)
+       if ( av_set_parameters(oc, NULL) >= 0 )
+#endif
        {
-               if ( video_st && !open_video( oc, video_st ) )
+#if LIBAVFORMAT_VERSION_MAJOR >= 53
+               if ( mlt_properties_get( properties, "muxpreload" ) && ! mlt_properties_get( properties, "preload" ) )
+                       mlt_properties_set_double( properties, "preload", mlt_properties_get_double( properties, "muxpreload" ) );
+#else
+               oc->preload = ( int )( mlt_properties_get_double( properties, "muxpreload" ) * AV_TIME_BASE );
+#endif
+               oc->max_delay= ( int )( mlt_properties_get_double( properties, "muxdelay" ) * AV_TIME_BASE );
+
+               // Process properties as AVOptions
+               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 );
+                       if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
+                               apply_properties( oc->priv_data, p, AV_OPT_FLAG_ENCODING_PARAM );
+                       mlt_properties_close( p );
+               }
+               apply_properties( oc, properties, AV_OPT_FLAG_ENCODING_PARAM );
+               if ( oc->oformat && oc->oformat->priv_class && oc->priv_data )
+                       apply_properties( oc->priv_data, properties, AV_OPT_FLAG_ENCODING_PARAM );
+
+               if ( video_st && !open_video( properties, 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_nb_samples = open_audio( properties, oc, audio_st[i], audio_outbuf_size,
+                               acodec? acodec : NULL );
+                       if ( !audio_input_nb_samples )
+                       {
+                               // Remove the audio stream from the output context
+                               int j;
+                               for ( j = 0; j < oc->nb_streams; j++ )
+                               {
+                                       if ( oc->streams[j] == audio_st[i] )
+                                               av_freep( &oc->streams[j] );
+                               }
+                               --oc->nb_streams;
+                               audio_st[i] = NULL;
+                       }
+               }
 
+               // Setup custom I/O if redirecting
+               if ( mlt_properties_get_int( properties, "redirect" ) )
+               {
+                       int buffer_size = 32768;
+                       unsigned char *buffer = av_malloc( buffer_size );
+#if LIBAVFORMAT_VERSION_MAJOR >= 53
+                       AVIOContext* io = avio_alloc_context( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
+#else
+                       ByteIOContext* io = av_alloc_put_byte( buffer, buffer_size, 1, properties, NULL, mlt_write, NULL );
+#endif
+                       if ( buffer && io )
+                       {
+                               oc->pb = io;
+#if LIBAVFORMAT_VERSION_MAJOR >= 53
+                               oc->flags |= AVFMT_FLAG_CUSTOM_IO;
+#endif
+                               mlt_properties_set_data( properties, "avio_buffer", buffer, buffer_size, av_free, NULL );
+                               mlt_properties_set_data( properties, "avio_context", io, 0, av_free, NULL );
+                               mlt_events_register( properties, "avformat-write", (mlt_transmitter) write_transmitter );
+                       }
+                       else
+                       {
+                               av_free( buffer );
+                               mlt_log_error( MLT_CONSUMER_SERVICE(consumer), "failed to setup output redirection\n" );
+                       }
+               }
                // Open the output file, if needed
-               if ( !( fmt->flags & AVFMT_NOFILE ) ) 
+               else if ( !( fmt->flags & AVFMT_NOFILE ) )
                {
-                       if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) 
+#if LIBAVFORMAT_VERSION_MAJOR >= 53
+                       if ( avio_open( &oc->pb, filename, AVIO_FLAG_WRITE ) < 0 )
+#else
+                       if ( url_fopen( &oc->pb, filename, URL_WRONLY ) < 0 )
+#endif
                        {
-                               fprintf(stderr, "Could not open '%s'\n", filename);
-                               mlt_properties_set_int( properties, "running", 0 );
+                               mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Could not open '%s'\n", filename );
+                               mlt_events_fire( properties, "consumer-fatal-error", NULL );
+                               goto on_fatal_error;
                        }
                }
        
-               // Write the stream header, if any
+               // Write the stream header.
                if ( mlt_properties_get_int( properties, "running" ) )
+#if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(2<<8)+0)
+                       avformat_write_header( oc, NULL );
+#else
                        av_write_header( oc );
+#endif
        }
+#if LIBAVFORMAT_VERSION_INT < ((53<<16)+(2<<8)+0)
        else
        {
-               fprintf(stderr, "Invalid output format parameters\n");
-               mlt_properties_set_int( properties, "running", 0 );
+               mlt_log_error( MLT_CONSUMER_SERVICE( consumer ), "Invalid output format parameters\n" );
+               mlt_events_fire( properties, "consumer-fatal-error", NULL );
+               goto on_fatal_error;
+       }
+#endif
+
+       // Last check - need at least one stream
+       if ( !audio_st[0] && !video_st )
+       {
+               mlt_events_fire( properties, "consumer-fatal-error", NULL );
+               goto on_fatal_error;
        }
 
        // Allocate picture
        if ( video_st )
-               output = alloc_picture( video_st->codec->pix_fmt, width, height );
+               converted_avframe = alloc_picture( video_st->codec->pix_fmt, width, height );
 
-       // Last check - need at least one stream
-       if ( audio_st == NULL && video_st == NULL )
-               mlt_properties_set_int( properties, "running", 0 );
+#if LIBAVCODEC_VERSION_MAJOR >= 54
+       // Allocate audio AVFrame
+       if ( audio_st[0] )
+       {
+               audio_avframe = avcodec_alloc_frame();
+               if ( audio_avframe ) {
+                       AVCodecContext *c = audio_st[0]->codec;
+                       audio_avframe->format = c->sample_fmt;
+                       audio_avframe->nb_samples = audio_input_nb_samples;
+                       audio_avframe->channel_layout = c->channel_layout;
+               } else {
+                       mlt_log_error( MLT_CONSUMER_SERVICE(consumer), "failed to allocate audio AVFrame\n" );
+                       mlt_events_fire( properties, "consumer-fatal-error", NULL );
+                       goto on_fatal_error;
+               }
+       }
+#endif
 
        // 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 );
+               if ( !frame )
+                       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
@@ -841,24 +1534,33 @@ 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 ++ );
+                               channels = total_channels;
                                mlt_frame_get_audio( frame, &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 )
                                {
                                        fifo = sample_fifo_init( frequency, channels );
                                        mlt_properties_set_data( properties, "sample_fifo", fifo, 0, ( mlt_destructor )sample_fifo_close, NULL );
                                }
+                               if ( pcm )
+                               {
+                                       // Silence if not normal forward speed
+                                       if ( mlt_properties_get_double( frame_properties, "_speed" ) != 1.0 )
+                                               memset( pcm, 0, samples * channels * sample_bytes );
 
-                               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;
+                                       // Append the samples
+                                       sample_fifo_append( fifo, pcm, samples * channels * sample_bytes );
+                                       total_time += ( samples * 1000000 ) / frequency;
+                               }
+                               if ( !video_st )
+                                       mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
                        }
 
                        // Encode the image
@@ -866,103 +1568,274 @@ static void *consumer_thread( void *arg )
                                mlt_deque_push_back( queue, frame );
                        else
                                mlt_frame_close( frame );
+                       frame = NULL;
                }
 
                // 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 ) )
+                       // Write interleaved audio and video frames
+                       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_nb_samples ) < sample_fifo_used( fifo ) / sample_bytes )
                                {
-                                       AVCodecContext *c;
-                                       AVPacket pkt;
-                                       av_init_packet( &pkt );
+                                       int j = 0; // channel offset into interleaved source buffer
+                                       int n = FFMIN( FFMIN( channels * audio_input_nb_samples, sample_fifo_used( fifo ) / sample_bytes ), AUDIO_ENCODE_BUFFER_SIZE );
+
+                                       // Get the audio samples
+                                       if ( n > 0 )
+                                       {
+                                               sample_fifo_fetch( fifo, audio_buf_1, n * sample_bytes );
+                                       }
+                                       else if ( audio_codec_id == AV_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;
 
-                                       c = audio_st->codec;
+                                       // 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;
 
-                                       sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
+                                               av_init_packet( &pkt );
+                                               pkt.data = audio_outbuf;
+                                               pkt.size = audio_outbuf_size;
 
-                                       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;
+                                               // Optimized for single track and no channel remap
+                                               if ( !audio_st[1] && !mlt_properties_count( frame_meta_properties ) )
+                                               {
+                                                       void* p = audio_buf_1;
+#if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
+                                                       if ( codec->sample_fmt == AV_SAMPLE_FMT_FLTP )
+                                                               p = interleaved_to_planar( samples, channels, p, sizeof( float ) );
+                                                       else if ( codec->sample_fmt == AV_SAMPLE_FMT_S16P )
+                                                               p = interleaved_to_planar( samples, channels, p, sizeof( int16_t ) );
+                                                       else if ( codec->sample_fmt == AV_SAMPLE_FMT_S32P )
+                                                               p = interleaved_to_planar( samples, channels, p, sizeof( int32_t ) );
+                                                       else if ( codec->sample_fmt == AV_SAMPLE_FMT_U8P )
+                                                               p = interleaved_to_planar( samples, channels, p, sizeof( uint8_t ) );
+#endif
+#if LIBAVCODEC_VERSION_MAJOR >= 54
+                                                       audio_avframe->nb_samples = FFMAX( samples, audio_input_nb_samples );
+                                                       if ( audio_codec_id == AV_CODEC_ID_VORBIS )
+                                                               audio_avframe->pts = synth_audio_pts;
+                                                       synth_audio_pts += audio_avframe->nb_samples;
+                                                       avcodec_fill_audio_frame( audio_avframe, codec->channels, codec->sample_fmt,
+                                                               (const uint8_t*) p, AUDIO_ENCODE_BUFFER_SIZE, 0 );
+                                                       int got_packet = 0;
+                                                       int ret = avcodec_encode_audio2( codec, &pkt, audio_avframe, &got_packet );
+                                                       if ( ret < 0 )
+                                                               pkt.size = ret;
+                                                       else if ( !got_packet )
+                                                               pkt.size = 0;
+#else
+                                                       codec->frame_size = FFMAX( samples, audio_input_nb_samples );
+                                                       pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, p );
+                                                       pkt.pts = codec->coded_frame? codec->coded_frame->pts : AV_NOPTS_VALUE;
+                                                       pkt.flags |= PKT_FLAG_KEY;
+#endif
+
+#if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
+                                                       if ( p != audio_buf_1 )
+                                                               mlt_pool_release( p );
+#endif
+                                               }
+                                               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 );
+
+                                                       // 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;
+
+                                                               // 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++ )
+                                                                       {
+                                                                               void *src = audio_buf_1 + source_offset * sample_bytes;
+                                                                               void *dest = audio_buf_2 + dest_offset * sample_bytes;
+                                                                               int s = samples + 1;
+
+                                                                               while ( --s ) {
+                                                                                       memcpy( dest, src, sample_bytes );
+                                                                                       dest += current_channels * sample_bytes;
+                                                                                       src += channels * sample_bytes;
+                                                                               }
+                                                                       }
+                                                               }
+                                                               // Otherwise silence
+                                                               else
+                                                               {
+                                                                       j += current_channels;
+                                                                       dest_offset += current_channels;
+                                                               }
+                                                       }
+#if LIBAVCODEC_VERSION_MAJOR >= 54
+                                                       audio_avframe->nb_samples = FFMAX( samples, audio_input_nb_samples );
+                                                       if ( audio_codec_id == AV_CODEC_ID_VORBIS )
+                                                               audio_avframe->pts = synth_audio_pts;
+                                                       synth_audio_pts += audio_avframe->nb_samples;
+                                                       avcodec_fill_audio_frame( audio_avframe, codec->channels, codec->sample_fmt,
+                                                               (const uint8_t*) audio_buf_2, AUDIO_ENCODE_BUFFER_SIZE, 0 );
+                                                       int got_packet = 0;
+                                                       int ret = avcodec_encode_audio2( codec, &pkt, audio_avframe, &got_packet );
+                                                       if ( ret < 0 )
+                                                               pkt.size = ret;
+                                                       else if ( !got_packet )
+                                                               pkt.size = 0;
+#else
+                                                       codec->frame_size = FFMAX( samples, audio_input_nb_samples );
+                                                       pkt.size = avcodec_encode_audio( codec, audio_outbuf, audio_outbuf_size, (short*) audio_buf_2 );
+                                                       pkt.pts = codec->coded_frame? codec->coded_frame->pts : AV_NOPTS_VALUE;
+                                                       pkt.flags |= PKT_FLAG_KEY;
+#endif
+                                               }
 
-                                       if ( pkt.size )
-                                               if ( av_interleaved_write_frame( oc, &pkt ) != 0) 
-                                                       fprintf(stderr, "Error while writing audio frame\n");
+                                               if ( pkt.size > 0 )
+                                               {
+                                                       // Write the compressed frame in the media file
+                                                       if ( pkt.pts != AV_NOPTS_VALUE )
+                                                               pkt.pts = av_rescale_q( pkt.pts, codec->time_base, stream->time_base );
+#if LIBAVCODEC_VERSION_MAJOR >= 55
+                                                       if ( pkt.dts != AV_NOPTS_VALUE )
+                                                               pkt.dts = av_rescale_q( pkt.dts, codec->time_base, stream->time_base );
+                                                       if ( pkt.duration > 0 )
+                                                               pkt.duration = av_rescale_q( pkt.duration, codec->time_base, stream->time_base );
+#endif
+                                                       pkt.stream_index = stream->index;
+                                                       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;
+                                                       }
+                                                       error_count = 0;
+                                                       mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio stream %d pkt pts %"PRId64" frame_size %d stream pts %"PRId64"\n",
+                                                               stream->index, pkt.pts, codec->frame_size, stream->pts.val );
+                                               }
+                                               else if ( pkt.size < 0 )
+                                               {
+                                                       mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "error with audio encode %d\n", frame_count );
+                                                       if ( ++error_count > 2 )
+                                                               goto on_fatal_error;
+                                               }
 
-                                       audio_pts += c->frame_size;
+                                               if ( i == 0 )
+                                               {
+                                                       audio_pts = (double)stream->pts.val * av_q2d( stream->time_base );
+                                               }
+                                       }
                                }
                                else
                                {
                                        break;
                                }
                        }
-                       else if ( video_st )
+                       else if ( video_st )
                        {
+                               // Write video
                                if ( mlt_deque_count( queue ) )
                                {
-                                       int out_size, ret;
-                                       AVCodecContext *c;
+                                       int ret = 0;
+                                       AVCodecContext *c = video_st->codec;
 
                                        frame = mlt_deque_pop_front( queue );
                                        frame_properties = MLT_FRAME_PROPERTIES( frame );
 
-                                       c = video_st->codec;
-                                       
                                        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 );
+                                               int stride = mlt_image_format_size( img_fmt, width, 0, NULL );
 
                                                mlt_frame_get_image( frame, &image, &img_fmt, &img_width, &img_height, 0 );
-
                                                q = image;
 
                                                // Convert the mlt frame to an AVPicture
-                                               for ( i = 0; i < height; i ++ )
+                                               if ( img_fmt == mlt_image_yuv420p )
                                                {
-                                                       p = input->data[ 0 ] + i * input->linesize[ 0 ];
-                                                       j = width;
-                                                       while( j -- )
-                                                       {
-                                                               *p ++ = *q ++;
-                                                               *p ++ = *q ++;
-                                                       }
+                                                       memcpy( video_avframe->data[0], q, video_avframe->linesize[0] );
+                                                       q += stride;
+                                                       memcpy( video_avframe->data[1], q, video_avframe->linesize[1] );
+                                                       q += stride / 4;
+                                                       memcpy( video_avframe->data[2], q, video_avframe->linesize[2] );
+                                               }
+                                               else for ( i = 0; i < height; i ++ )
+                                               {
+                                                       p = video_avframe->data[0] + i * video_avframe->linesize[0];
+                                                       memcpy( p, q, stride );
+                                                       q += stride;
                                                }
 
                                                // Do the colour space conversion
-#ifdef SWSCALE
-                                               struct SwsContext *context = sws_getContext( width, height, PIX_FMT_YUV422,
-                                                       width, height, video_st->codec->pix_fmt, SWS_FAST_BILINEAR, NULL, NULL, NULL);
-                                               sws_scale( context, input->data, input->linesize, 0, height,
-                                                       output->data, output->linesize);
-                                               sws_freeContext( context );
-#else
-                                               img_convert( ( AVPicture * )output, video_st->codec->pix_fmt, ( AVPicture * )input, PIX_FMT_YUV422, width, height );
+                                               int flags = SWS_BICUBIC;
+#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, pick_pix_fmt( img_fmt ),
+                                                       width, height, c->pix_fmt, flags, NULL, NULL, NULL);
+                                               sws_scale( context, (const uint8_t* const*) video_avframe->data, video_avframe->linesize, 0, height,
+                                                       converted_avframe->data, converted_avframe->linesize);
+                                               sws_freeContext( context );
+
+                                               mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
 
                                                // Apply the alpha if applicable
-                                               if ( video_st->codec->pix_fmt == PIX_FMT_RGBA32 )
+                                               if ( !mlt_properties_get( properties, "mlt_image_format" ) ||
+                                                    strcmp( mlt_properties_get( properties, "mlt_image_format" ), "rgb24a" ) )
+                                               if ( c->pix_fmt == PIX_FMT_RGBA ||
+                                                    c->pix_fmt == PIX_FMT_ARGB ||
+                                                    c->pix_fmt == PIX_FMT_BGRA )
                                                {
                                                        uint8_t *alpha = mlt_frame_get_alpha_mask( frame );
                                                        register int n;
@@ -970,11 +1843,7 @@ 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 = converted_avframe->data[ 0 ] + i * converted_avframe->linesize[ 0 ] + 3;
 
                                                                switch( width % 8 )
                                                                {
@@ -992,72 +1861,131 @@ static void *consumer_thread( void *arg )
                                                        }
                                                }
                                        }
-                                       if (oc->oformat->flags & AVFMT_RAWPICTURE) 
+
+                                       if (oc->oformat->flags & AVFMT_RAWPICTURE) 
                                        {
                                                // raw video case. The API will change slightly in the near future for that
                                                AVPacket pkt;
                                                av_init_packet(&pkt);
-        
+
+                                               // Set frame interlace hints
+                                               c->coded_frame->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
+                                               c->coded_frame->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
+#if LIBAVCODEC_VERSION_INT >= ((53<<16)+(61<<8)+100)
+                                               if ( mlt_properties_get_int( frame_properties, "progressive" ) )
+                                                       c->field_order = AV_FIELD_PROGRESSIVE;
+                                               else
+                                                       c->field_order = (mlt_properties_get_int( frame_properties, "top_field_first" )) ? AV_FIELD_TT : AV_FIELD_BB;
+#endif
                                                pkt.flags |= PKT_FLAG_KEY;
-                                               pkt.stream_index= video_st->index;
-                                               pkt.data= (uint8_t *)output;
-                                               pkt.size= sizeof(AVPicture);
+                                               pkt.stream_index = video_st->index;
+                                               pkt.data = (uint8_t *)converted_avframe;
+                                               pkt.size = sizeof(AVPicture);
 
                                                ret = av_write_frame(oc, &pkt);
                                                video_pts += c->frame_size;
-                                       } 
+                                       } 
                                        else 
                                        {
+                                               AVPacket pkt;
+                                               av_init_packet( &pkt );
+                                               if ( c->codec->id == AV_CODEC_ID_RAWVIDEO ) {
+                                                       pkt.data = NULL;
+                                                       pkt.size = 0;
+                                               } else {
+                                                       pkt.data = video_outbuf;
+                                                       pkt.size = video_outbuf_size;
+                                               }
+
                                                // Set the quality
-                                               output->quality = video_st->quality;
+                                               converted_avframe->quality = c->global_quality;
+                                               converted_avframe->pts = frame_count;
 
                                                // 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" );
+                                               converted_avframe->interlaced_frame = !mlt_properties_get_int( frame_properties, "progressive" );
+                                               converted_avframe->top_field_first = mlt_properties_get_int( frame_properties, "top_field_first" );
+#if LIBAVCODEC_VERSION_INT >= ((53<<16)+(61<<8)+100)
+                                               if ( mlt_properties_get_int( frame_properties, "progressive" ) )
+                                                       c->field_order = AV_FIELD_PROGRESSIVE;
+                                               else if ( c->codec_id == AV_CODEC_ID_MJPEG )
+                                                       c->field_order = (mlt_properties_get_int( frame_properties, "top_field_first" )) ? AV_FIELD_TT : AV_FIELD_BB;
+                                               else
+                                                       c->field_order = (mlt_properties_get_int( frame_properties, "top_field_first" )) ? AV_FIELD_TB : AV_FIELD_BT;
+#endif
 
                                                // Encode the image
-                                               out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, output );
+#if LIBAVCODEC_VERSION_MAJOR >= 55
+                                               int got_packet;
+                                               ret = avcodec_encode_video2( c, &pkt, converted_avframe, &got_packet );
+                                               if ( ret < 0 )
+                                                       pkt.size = ret;
+                                               else if ( !got_packet )
+                                                       pkt.size = 0;
+#else
+                                               pkt.size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, converted_avframe );
+                                               pkt.pts = c->coded_frame? c->coded_frame->pts : AV_NOPTS_VALUE;
+                                               if ( c->coded_frame && c->coded_frame->key_frame )
+                                                       pkt.flags |= PKT_FLAG_KEY;
+#endif
 
                                                // If zero size, it means the image was buffered
-                                               if (out_size > 0) 
+                                               if ( pkt.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 );
-                                                       if( c->coded_frame && c->coded_frame->key_frame )
-                                                               pkt.flags |= PKT_FLAG_KEY;
-                                                       pkt.stream_index= video_st->index;
-                                                       pkt.data= video_outbuf;
-                                                       pkt.size= out_size;
-
-                                       // write the compressed frame in the media file
+                                                       if ( pkt.pts != AV_NOPTS_VALUE )
+                                                               pkt.pts = av_rescale_q( pkt.pts, c->time_base, video_st->time_base );
+#if LIBAVCODEC_VERSION_MAJOR >= 55
+                                                       if ( pkt.dts != AV_NOPTS_VALUE )
+                                                               pkt.dts = av_rescale_q( pkt.dts, c->time_base, video_st->time_base );
+#endif
+                                                       pkt.stream_index = video_st->index;
+
+                                                       // 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 )
+                                                               fprintf( mlt_properties_get_data( properties, "_logfile", NULL ), "%s", c->stats_out );
+
+                                                       error_count = 0;
                                                } 
-                                               else
+                                               else if ( pkt.size < 0 )
                                                {
-                                                       fprintf( stderr, "Error with video encode\n" );
+                                                       mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "error with video encode %d\n", frame_count );
+                                                       if ( ++error_count > 2 )
+                                                               goto on_fatal_error;
+                                                       ret = 0;
                                                }
                                        }
                                        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 );
+                                       frame = NULL;
                                }
                                else
                                {
                                        break;
                                }
                        }
+                       if ( audio_st[0] )
+                               mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "audio pts %"PRId64" (%f) ", audio_st[0]->pts.val, audio_pts );
+                       if ( video_st )
+                               mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "video pts %"PRId64" (%f) ", video_st->pts.val, video_pts );
+                       mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "\n" );
                }
 
-               if ( real_time_output && frames % 12 == 0 )
+               if ( real_time_output == 1 && frames % 2 == 0 )
                {
                        long passed = time_difference( &ante );
                        if ( fifo != NULL )
                        {
-                               long pending = ( ( ( long )sample_fifo_used( fifo ) * 1000 ) / frequency ) * 1000;
+                               long pending = ( ( ( long )sample_fifo_used( fifo ) / sample_bytes * 1000 ) / frequency ) * 1000;
                                passed -= pending;
                        }
                        if ( passed < total_time )
@@ -1069,37 +1997,95 @@ 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.data = audio_outbuf;
                        pkt.size = 0;
 
-                       if ( /*( c->capabilities & CODEC_CAP_SMALL_LAST_FRAME ) &&*/
-                               ( channels * audio_input_frame_size < sample_fifo_used( fifo ) ) )
+                       if ( fifo && sample_fifo_used( fifo ) > 0 )
                        {
-                               sample_fifo_fetch( fifo, buffer, channels * audio_input_frame_size );
-                               pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, buffer );
+                               // Drain the MLT FIFO
+                               int samples = FFMIN( FFMIN( channels * audio_input_nb_samples, sample_fifo_used( fifo ) / sample_bytes ), AUDIO_ENCODE_BUFFER_SIZE );
+                               sample_fifo_fetch( fifo, audio_buf_1, samples * sample_bytes );
+                               void* p = audio_buf_1;
+#if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
+                               if ( c->sample_fmt == AV_SAMPLE_FMT_FLTP )
+                                       p = interleaved_to_planar( audio_input_nb_samples, channels, p, sizeof( float ) );
+                               else if ( c->sample_fmt == AV_SAMPLE_FMT_S16P )
+                                       p = interleaved_to_planar( audio_input_nb_samples, channels, p, sizeof( int16_t ) );
+                               else if ( c->sample_fmt == AV_SAMPLE_FMT_S32P )
+                                       p = interleaved_to_planar( audio_input_nb_samples, channels, p, sizeof( int32_t ) );
+                               else if ( c->sample_fmt == AV_SAMPLE_FMT_U8P )
+                                       p = interleaved_to_planar( audio_input_nb_samples, channels, p, sizeof( uint8_t ) );
+#endif
+#if LIBAVCODEC_VERSION_MAJOR >= 54
+                               pkt.size = audio_outbuf_size;
+                               audio_avframe->nb_samples = FFMAX( samples / channels, audio_input_nb_samples );
+                               if ( audio_codec_id == AV_CODEC_ID_VORBIS )
+                                       audio_avframe->pts = synth_audio_pts;
+                               synth_audio_pts += audio_avframe->nb_samples;
+                               avcodec_fill_audio_frame( audio_avframe, c->channels, c->sample_fmt,
+                                       (const uint8_t*) p, AUDIO_ENCODE_BUFFER_SIZE, 0 );
+                               int got_packet = 0;
+                               int ret = avcodec_encode_audio2( c, &pkt, audio_avframe, &got_packet );
+                               if ( ret < 0 )
+                                       pkt.size = ret;
+                               else if ( !got_packet )
+                                       pkt.size = 0;
+#else
+                               c->frame_size = FFMAX( samples / channels, audio_input_nb_samples );
+                               pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, p );
+#endif
+#if LIBAVUTIL_VERSION_INT >= ((51<<16)+(17<<8)+0)
+                               if ( p != audio_buf_1 )
+                                       mlt_pool_release( p );
+#endif
+                               mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing audio size %d\n", pkt.size );
+                       }
+                       else
+                       {
+                               // Drain the codec
+                               if ( pkt.size <= 0 ) {
+#if LIBAVCODEC_VERSION_MAJOR >= 54
+                                       pkt.size = audio_outbuf_size;
+                                       int got_packet = 0;
+                                       int ret = avcodec_encode_audio2( c, &pkt, NULL, &got_packet );
+                                       if ( ret < 0 )
+                                               pkt.size = ret;
+                                       else if ( !got_packet )
+                                               pkt.size = 0;
+#else
+                                       pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
+                                       pkt.pts = c->coded_frame? c->coded_frame->pts : AV_NOPTS_VALUE;
+                                       pkt.flags |= PKT_FLAG_KEY;
+#endif
+                               }
+                               mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing audio size %d\n", pkt.size );
+                               if ( pkt.size <= 0 )
+                                       break;
                        }
-                       if ( pkt.size <= 0 )
-                               pkt.size = avcodec_encode_audio( c, audio_outbuf, audio_outbuf_size, NULL );
-                       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.flags |= PKT_FLAG_KEY;
-                       pkt.stream_index = audio_st->index;
-                       pkt.data = audio_outbuf;
+                       if ( pkt.pts != AV_NOPTS_VALUE )
+                               pkt.pts = av_rescale_q( pkt.pts, c->time_base, audio_st[0]->time_base );
+#if LIBAVCODEC_VERSION_MAJOR >= 55
+                       if ( pkt.dts != AV_NOPTS_VALUE )
+                               pkt.dts = av_rescale_q( pkt.dts, c->time_base, audio_st[0]->time_base );
+                       if ( pkt.duration > 0 )
+                               pkt.duration = av_rescale_q( pkt.duration, c->time_base, audio_st[0]->time_base );
+#endif
+                       pkt.stream_index = audio_st[0]->index;
                        if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
                        {
-                               fprintf(stderr, "Error while writing flushed audio frame\n");
+                               mlt_log_warning( MLT_CONSUMER_SERVICE( consumer ), "error writing flushed audio frame\n" );
                                break;
                        }
                }
@@ -1110,66 +2096,139 @@ static void *consumer_thread( void *arg )
                        AVCodecContext *c = video_st->codec;
                        AVPacket pkt;
                        av_init_packet( &pkt );
+                       if ( c->codec->id == AV_CODEC_ID_RAWVIDEO ) {
+                               pkt.data = NULL;
+                               pkt.size = 0;
+                       } else {
+                               pkt.data = video_outbuf;
+                               pkt.size = video_outbuf_size;
+                       }
 
                        // Encode the image
+#if LIBAVCODEC_VERSION_MAJOR >= 55
+                       int got_packet = 0;
+                       int ret = avcodec_encode_video2( c, &pkt, NULL, &got_packet );
+                       if ( ret < 0 )
+                               pkt.size = ret;
+                       else if ( !got_packet )
+                               pkt.size = 0;
+#else
                        pkt.size = avcodec_encode_video( c, video_outbuf, video_outbuf_size, NULL );
+                       pkt.pts = c->coded_frame? c->coded_frame->pts : AV_NOPTS_VALUE;
+                       if( c->coded_frame && c->coded_frame->key_frame )
+                               pkt.flags |= PKT_FLAG_KEY;
+#endif
+                       mlt_log_debug( MLT_CONSUMER_SERVICE( consumer ), "flushing video size %d\n", pkt.size );
                        if ( pkt.size <= 0 )
                                break;
 
-                       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 );
-                       if( c->coded_frame && c->coded_frame->key_frame )
-                               pkt.flags |= PKT_FLAG_KEY;
+                       if ( pkt.pts != AV_NOPTS_VALUE )
+                               pkt.pts = av_rescale_q( pkt.pts, c->time_base, video_st->time_base );
+#if LIBAVCODEC_VERSION_MAJOR >= 55
+                       if ( pkt.dts != AV_NOPTS_VALUE )
+                               pkt.dts = av_rescale_q( pkt.dts, c->time_base, video_st->time_base );
+#endif
                        pkt.stream_index = video_st->index;
-                       pkt.data = video_outbuf;
 
                        // write the compressed frame in the media file
                        if ( av_interleaved_write_frame( oc, &pkt ) != 0 )
                        {
-                               fprintf(stderr, "Error while writing flushed video frame\n");
-                               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);
+       if ( frames )
+               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 LIBAVFORMAT_VERSION_INT >= ((52<<16)+(0<<8)+0)
-               url_fclose(oc->pb);
+       if ( !( fmt->flags & AVFMT_NOFILE ) &&
+               !mlt_properties_get_int( properties, "redirect" ) )
+       {
+#if LIBAVFORMAT_VERSION_MAJOR >= 53
+               if ( oc->pb  ) avio_close( oc->pb );
 #else
-               url_fclose(&oc->pb);
+               if ( oc->pb  ) url_fclose( oc->pb );
 #endif
+       }
 
        // Clean up input and output frames
-       if ( output )
-               av_free( output->data[0] );
-       av_free( output );
-       av_free( input->data[0] );
-       av_free( input );
+       if ( converted_avframe )
+               av_free( converted_avframe->data[0] );
+       av_free( converted_avframe );
+       av_free( video_avframe->data[0] );
+       av_free( video_avframe );
        av_free( video_outbuf );
-       av_free( buffer );
+       av_free( audio_avframe );
+       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( consumer );
+       mlt_properties_close( frame_meta_properties );
+
+       if ( mlt_properties_get_int( properties, "pass" ) > 1 )
+       {
+               // Remove the dual pass log file
+               if ( mlt_properties_get( properties, "_logfilename" ) )
+                       remove( mlt_properties_get( properties, "_logfilename" ) );
+
+               // Remove the x264 dual pass logs
+               char *cwd = getcwd( NULL, 0 );
+               const char *file = "x264_2pass.log";
+               char *full = malloc( strlen( cwd ) + strlen( file ) + 2 );
+               sprintf( full, "%s/%s", cwd, file );
+               remove( full );
+               free( full );
+               file = "x264_2pass.log.temp";
+               full = malloc( strlen( cwd ) + strlen( file ) + 2 );
+               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" );
+
+               // Recent versions of libavcodec/x264 support passlogfile and need cleanup if specified.
+               if ( !mlt_properties_get( properties, "_logfilename" ) &&
+                     mlt_properties_get( properties, "passlogfile" ) )
+               {
+                       file = mlt_properties_get( properties, "passlogfile" );
+                       remove( file );
+                       full = malloc( strlen( file ) + strlen( ".mbtree" ) + 1 );
+                       sprintf( full, "%s.mbtree", file );
+                       remove( full );
+                       free( full );
+               }
+       }
 
-       mlt_consumer_stopped( this );
+       while ( ( frame = mlt_deque_pop_back( queue ) ) )
+               mlt_frame_close( frame );
 
        return NULL;
 }
@@ -1177,14 +2236,14 @@ 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 );
 }