X-Git-Url: http://git.osdn.jp/view?a=blobdiff_plain;f=libhb%2Fmuxmp4.c;h=fe6cc2793b9d600e5309204cc7ba87c7d2156800;hb=17860fcc4da9def330562abe8cc09a564d38387e;hp=ed8df364faefffc8e86f8567f57d30cf45cd9ff0;hpb=8efb73bbf4681fb94038ad5490e9a5ad4c455045;p=handbrake-jp%2Fhandbrake-jp-git.git
diff --git a/libhb/muxmp4.c b/libhb/muxmp4.c
index ed8df364..fe6cc279 100644
--- a/libhb/muxmp4.c
+++ b/libhb/muxmp4.c
@@ -1,193 +1,550 @@
/* $Id: muxmp4.c,v 1.24 2005/11/04 13:09:41 titer Exp $
-This file is part of the HandBrake source code.
-Homepage: .
-It may be used under the terms of the GNU General Public License. */
+ This file is part of the HandBrake source code.
+ Homepage: .
+ It may be used under the terms of the GNU General Public License. */
-#include
+/* libmp4v2 header */
+#include "mp4.h"
#include "hb.h"
-int64_t ff_gcd(int64_t a, int64_t b);
+void AddIPodUUID(MP4FileHandle, MP4TrackId);
struct hb_mux_object_s
{
HB_MUX_COMMON;
-
+
hb_job_t * job;
-
- AVFormatContext * format;
+
+ /* libmp4v2 handle */
+ MP4FileHandle file;
+
+ /* Cumulated durations so far, in output & input timescale units (see MP4Mux) */
+ int64_t sum_dur; // duration in output timescale units
+ int64_t sum_dur_in; // duration in input 90KHz timescale units
+
+ // bias to keep render offsets in ctts atom positive (set up by encx264)
+ int64_t init_delay;
+
+ /* Chapter state information for muxing */
+ MP4TrackId chapter_track;
+ int current_chapter;
+ uint64_t chapter_duration;
+
+ /* Sample rate of the first audio track.
+ * Used for the timescale
+ */
+ int samplerate;
};
struct hb_mux_data_s
{
- int track;
+ MP4TrackId track;
+};
+
+struct hb_text_sample_s
+{
+ uint8_t sample[1280];
+ uint32_t length;
+ MP4Duration duration;
};
/**********************************************************************
-* MP4Init
-**********************************************************************
-* Allocates hb_mux_data_t structures, create file and write headers
-*********************************************************************/
+ * MP4CreateTextSample
+ **********************************************************************
+ * Creates a buffer for a text track sample
+ *********************************************************************/
+static struct hb_text_sample_s *MP4CreateTextSample( char *textString, uint64_t duration )
+{
+ struct hb_text_sample_s *sample = NULL;
+ int stringLength = strlen(textString);
+ int x;
+
+ if( stringLength < 1024 )
+ {
+ sample = malloc( sizeof( struct hb_text_sample_s ) );
+
+ //textLength = (stringLength; // Account for BOM
+ sample->length = stringLength + 2 + 12; // Account for text length code and other marker
+ sample->duration = (MP4Duration)duration;
+
+ // 2-byte length marker
+ sample->sample[0] = (stringLength >> 8) & 0xff;
+ sample->sample[1] = stringLength & 0xff;
+
+ strncpy( (char *)&(sample->sample[2]), textString, stringLength );
+
+ x = 2 + stringLength;
+
+ // Modifier Length Marker
+ sample->sample[x] = 0x00;
+ sample->sample[x+1] = 0x00;
+ sample->sample[x+2] = 0x00;
+ sample->sample[x+3] = 0x0C;
+
+ // Modifier Type Code
+ sample->sample[x+4] = 'e';
+ sample->sample[x+5] = 'n';
+ sample->sample[x+6] = 'c';
+ sample->sample[x+7] = 'd';
+
+ // Modifier Value
+ sample->sample[x+8] = 0x00;
+ sample->sample[x+9] = 0x00;
+ sample->sample[x+10] = (256 >> 8) & 0xff;
+ sample->sample[x+11] = 256 & 0xff;
+ }
+
+ return sample;
+}
+
+/**********************************************************************
+ * MP4GenerateChapterSample
+ **********************************************************************
+ * Creates a buffer for a text track sample
+ *********************************************************************/
+static struct hb_text_sample_s *MP4GenerateChapterSample( hb_mux_object_t * m,
+ uint64_t duration,
+ int chapter )
+{
+ // We substract 1 from the chapter number because the chapters start at
+ // 1 but our name array starts at 0. We substract another 1 because we're
+ // writing the text of the previous chapter mark (when we get the start
+ // of chapter 2 we know the duration of chapter 1 & can write its mark).
+ hb_chapter_t *chapter_data = hb_list_item( m->job->title->list_chapter,
+ chapter - 2 );
+ char tmp_buffer[1024];
+ char *string = tmp_buffer;
+
+ tmp_buffer[0] = '\0';
+
+ if( chapter_data != NULL )
+ {
+ string = chapter_data->title;
+ }
+
+ if( strlen(string) == 0 || strlen(string) >= 1024 )
+ {
+ snprintf( tmp_buffer, 1023, "Chapter %03i", chapter - 2 );
+ string = tmp_buffer;
+ }
+
+ return MP4CreateTextSample( string, duration );
+}
+
+
+/**********************************************************************
+ * MP4Init
+ **********************************************************************
+ * Allocates hb_mux_data_t structures, create file and write headers
+ *********************************************************************/
static int MP4Init( hb_mux_object_t * m )
{
hb_job_t * job = m->job;
hb_title_t * title = job->title;
-
+
hb_audio_t * audio;
+ hb_mux_data_t * mux_data;
int i;
- AVFormatContext * oc;
- AVStream *st;
- AVFormatParameters params;
-
- register_protocol(&file_protocol);
- //movenc_init();
- av_register_all();
-
- oc = av_alloc_format_context();
-
- if( job->mux & HB_MUX_PSP )
- {
- oc->oformat = guess_format( "psp", NULL, NULL );
- hb_log( "using format psp" );
- }
- else if( job->mux & HB_MUX_IPOD )
- {
- /* added this format to ffmpeg source */
- oc->oformat = guess_format( "ipod", NULL, NULL );
- hb_log( "using format ipod" );
+ u_int16_t language_code;
+
+ /* Flags for enabling/disabling tracks in an MP4. */
+ typedef enum { TRACK_DISABLED = 0x0, TRACK_ENABLED = 0x1, TRACK_IN_MOVIE = 0x2, TRACK_IN_PREVIEW = 0x4, TRACK_IN_POSTER = 0x8} track_header_flags;
+
+ if( (audio = hb_list_item(title->list_audio, 0)) != NULL )
+ {
+ /* Need the sample rate of the first audio track to use as the timescale. */
+ m->samplerate = audio->config.out.samplerate;
+ audio = NULL;
+ }
+ else
+ {
+ m->samplerate = 90000;
+ }
+
+ /* Create an empty mp4 file */
+ if (job->largeFileSize)
+ /* Use 64-bit MP4 file */
+ {
+ m->file = MP4Create( job->file, MP4_DETAILS_ERROR, MP4_CREATE_64BIT_DATA );
+ hb_log("Using 64-bit MP4 formatting.");
+ }
+ else
+ /* Limit MP4s to less than 4 GB */
+ {
+ m->file = MP4Create( job->file, MP4_DETAILS_ERROR, 0 );
+ }
+
+ if (m->file == MP4_INVALID_FILE_HANDLE)
+ {
+ hb_error("muxmp4.c: MP4Create failed!");
+ *job->die = 1;
+ return 0;
+ }
+
+ /* Video track */
+ mux_data = malloc( sizeof( hb_mux_data_t ) );
+ job->mux_data = mux_data;
+
+ /* When using the standard 90000 timescale, QuickTime tends to have
+ synchronization issues (audio not playing at the correct speed).
+ To workaround this, we use the audio samplerate as the
+ timescale */
+ if (!(MP4SetTimeScale( m->file, m->samplerate )))
+ {
+ hb_error("muxmp4.c: MP4SetTimeScale failed!");
+ *job->die = 1;
+ return 0;
+ }
+
+ if( job->vcodec == HB_VCODEC_X264 )
+ {
+ /* Stolen from mp4creator */
+ if(!(MP4SetVideoProfileLevel( m->file, 0x7F )))
+ {
+ hb_error("muxmp4.c: MP4SetVideoProfileLevel failed!");
+ *job->die = 1;
+ return 0;
+ }
+
+ mux_data->track = MP4AddH264VideoTrack( m->file, m->samplerate,
+ MP4_INVALID_DURATION, job->width, job->height,
+ job->config.h264.sps[1], /* AVCProfileIndication */
+ job->config.h264.sps[2], /* profile_compat */
+ job->config.h264.sps[3], /* AVCLevelIndication */
+ 3 ); /* 4 bytes length before each NAL unit */
+
+
+ MP4AddH264SequenceParameterSet( m->file, mux_data->track,
+ job->config.h264.sps, job->config.h264.sps_length );
+ MP4AddH264PictureParameterSet( m->file, mux_data->track,
+ job->config.h264.pps, job->config.h264.pps_length );
+
+ if( job->h264_level == 30 || job->ipod_atom)
+ {
+ hb_log("About to add iPod atom");
+ AddIPodUUID(m->file, mux_data->track);
+ }
+
+ m->init_delay = job->config.h264.init_delay;
+ }
+ else /* FFmpeg or XviD */
+ {
+ if(!(MP4SetVideoProfileLevel( m->file, MPEG4_SP_L3 )))
+ {
+ hb_error("muxmp4.c: MP4SetVideoProfileLevel failed!");
+ *job->die = 1;
+ return 0;
+ }
+ mux_data->track = MP4AddVideoTrack( m->file, m->samplerate,
+ MP4_INVALID_DURATION, job->width, job->height,
+ MP4_MPEG4_VIDEO_TYPE );
+ if (mux_data->track == MP4_INVALID_TRACK_ID)
+ {
+ hb_error("muxmp4.c: MP4AddVideoTrack failed!");
+ *job->die = 1;
+ return 0;
+ }
+
+
+ /* VOL from FFmpeg or XviD */
+ if (!(MP4SetTrackESConfiguration( m->file, mux_data->track,
+ job->config.mpeg4.bytes, job->config.mpeg4.length )))
+ {
+ hb_error("muxmp4.c: MP4SetTrackESConfiguration failed!");
+ *job->die = 1;
+ return 0;
+ }
+ }
+
+ // COLR atom for color and gamma correction.
+ // Per the notes at:
+ // http://developer.apple.com/quicktime/icefloe/dispatch019.html#colr
+ // http://forum.doom9.org/showthread.php?t=133982#post1090068
+ // we say anything that's likely to be HD content is ITU BT.709 and
+ // DVD, SD TV & other content is ITU BT.601. We look at the title height
+ // rather than the job height here to get uncropped input dimensions.
+ if ( job->title->height >= 720 )
+ {
+ // we guess that 720p or above is ITU BT.709 HD content
+ MP4AddColr(m->file, mux_data->track, 1, 1, 1);
}
else
{
- oc->oformat = guess_format( "mp4", NULL, NULL );
- hb_log( "using format mp4" );
- }
- if( !oc->oformat )
- {
- hb_log( "guess_format failed" );
- return 1;
- }
-
- hb_log( "using oformat: %s", oc->oformat->name );
-
- snprintf( oc->filename, sizeof( oc->filename ),
- "%s", job->file );
-
- st = av_new_stream( oc, oc->nb_streams );
- if( !st )
- {
- hb_log( "av_new_stream failed" );
- return 1;
- }
- st->stream_copy = 1;
- st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
- st->codec->codec_type = CODEC_TYPE_VIDEO;
- st->codec->codec_id = ( job->vcodec == HB_VCODEC_X264 ) ?
-CODEC_ID_H264 : CODEC_ID_MPEG4;
- st->codec->extradata= job->config.mpeg4.bytes;
- st->codec->extradata_size= job->config.mpeg4.length;
- st->codec->bit_rate = 1000 * job->vbitrate;
- i = ff_gcd( job->vrate_base, job->vrate );
- st->codec->time_base = (AVRational){ job->vrate_base / i, job->vrate / i };
-
- st->codec->pix_fmt = PIX_FMT_YUV420P;
- st->codec->width = job->width;
- st->codec->height = job->height;
- st->codec->has_b_frames = 0;
-
- job->mux_data = malloc( sizeof( hb_mux_data_t ) );
- job->mux_data->track = 0;
-
+ // ITU BT.601 DVD or SD TV content
+ MP4AddColr(m->file, mux_data->track, 6, 1, 6);
+ }
+
+ if( job->pixel_ratio )
+ {
+ /* PASP atom for anamorphic video */
+ float width, height;
+
+ width = job->pixel_aspect_width;
+
+ height = job->pixel_aspect_height;
+
+ MP4AddPixelAspectRatio(m->file, mux_data->track, (uint32_t)width, (uint32_t)height);
+
+ MP4SetTrackFloatProperty(m->file, mux_data->track, "tkhd.width", job->width * (width / height));
+ }
+
+ /* add the audio tracks */
for( i = 0; i < hb_list_count( title->list_audio ); i++ )
{
+ static u_int8_t reserved2[16] = {
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x02, 0x00, 0x10,
+ 0x00, 0x00, 0x00, 0x00,
+ };
+
audio = hb_list_item( title->list_audio, i );
-
- audio->mux_data = malloc( sizeof( hb_mux_data_t ) );
- audio->mux_data->track = i + 1;
-
- st = av_new_stream( oc, oc->nb_streams );
- if( !st )
+ mux_data = malloc( sizeof( hb_mux_data_t ) );
+ audio->priv.mux_data = mux_data;
+
+ if( audio->config.out.codec == HB_ACODEC_AC3 )
+ {
+ mux_data->track = MP4AddAC3AudioTrack(
+ m->file,
+ m->samplerate, 1536, MP4_MPEG4_AUDIO_TYPE );
+ MP4SetTrackBytesProperty(
+ m->file, mux_data->track,
+ "udta.name.value",
+ (const u_int8_t*)"Surround", strlen("Surround"));
+ } else {
+ mux_data->track = MP4AddAudioTrack(
+ m->file,
+ m->samplerate, 1024, MP4_MPEG4_AUDIO_TYPE );
+ MP4SetTrackBytesProperty(
+ m->file, mux_data->track,
+ "udta.name.value",
+ (const u_int8_t*)"Stereo", strlen("Stereo"));
+
+ MP4SetAudioProfileLevel( m->file, 0x0F );
+ MP4SetTrackESConfiguration(
+ m->file, mux_data->track,
+ audio->priv.config.aac.bytes, audio->priv.config.aac.length );
+
+ /* Set the correct number of channels for this track */
+ reserved2[9] = (u_int8_t)HB_AMIXDOWN_GET_DISCRETE_CHANNEL_COUNT(audio->config.out.mixdown);
+ MP4SetTrackBytesProperty(m->file, mux_data->track, "mdia.minf.stbl.stsd.mp4a.reserved2", reserved2, sizeof(reserved2));
+
+ }
+ /* Set the language for this track */
+ /* The language is stored as 5-bit text - 0x60 */
+ language_code = audio->config.lang.iso639_2[0] - 0x60; language_code <<= 5;
+ language_code |= audio->config.lang.iso639_2[1] - 0x60; language_code <<= 5;
+ language_code |= audio->config.lang.iso639_2[2] - 0x60;
+ MP4SetTrackIntegerProperty(m->file, mux_data->track, "mdia.mdhd.language", language_code);
+
+
+ /* Set the audio track alternate group */
+ MP4SetTrackIntegerProperty(m->file, mux_data->track, "tkhd.alternate_group", 1);
+
+ /* If we ever upgrade mpeg4ip, the line above should be replaced with the line below.*/
+// MP4SetTrackIntegerProperty(m->file, mux_data->track, "mdia.minf.stbl.stsd.mp4a.channels", (u_int16_t)HB_AMIXDOWN_GET_DISCRETE_CHANNEL_COUNT(audio->amixdown));
+
+ if (i == 0) {
+ /* Enable the first audio track */
+ MP4SetTrackIntegerProperty(m->file, mux_data->track, "tkhd.flags", (TRACK_ENABLED | TRACK_IN_MOVIE));
+ }
+ else
+ /* Disable the other audio tracks so QuickTime doesn't play
+ them all at once. */
{
- hb_log( "av_new_stream failed" );
- return 1;
+ MP4SetTrackIntegerProperty(m->file, mux_data->track, "tkhd.flags", (TRACK_DISABLED | TRACK_IN_MOVIE));
+ hb_log("Disabled extra audio track %i", mux_data->track-1);
}
- st->stream_copy = 1;
- st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- st->codec->codec_id = CODEC_ID_AAC;
- st->codec->bit_rate = 1000 * job->abitrate;
- st->codec->extradata= audio->config.aac.bytes;
- st->codec->extradata_size= audio->config.aac.length;
- st->codec->time_base = (AVRational){ 1, job->arate };
- st->codec->channels = 2;
- st->codec->sample_rate = job->arate;
- st->codec->frame_size = 1024;
- st->codec->block_align = 0;
- }
-
- oc->timestamp = 0;
- if( url_fopen( &oc->pb, job->file, URL_WRONLY ) < 0 )
- {
- hb_log( "url_fopen failed (%s)", job->file );
- return 1;
- }
-
- memset( ¶ms, 0, sizeof( params ) );
- if( av_set_parameters( oc, ¶ms ) < 0 )
- {
- hb_log( "av_set_parameters failed" );
- return 1;
- }
-
- oc->packet_size= 0;
- oc->mux_rate= 0;
- oc->preload= (int)(0.5*AV_TIME_BASE);
- oc->max_delay= (int)(0.7*AV_TIME_BASE);
- oc->loop_output = AVFMT_NOOUTPUTLOOP;
-
- if( av_write_header( oc ) < 0 )
- {
- hb_log( "av_write_header failed" );
- return 1;
- }
-
- m->format = oc;
-
+
+ }
+
+ if (job->chapter_markers)
+ {
+ /* add a text track for the chapters. We add the 'chap' atom to track
+ one which is usually the video track & should never be disabled.
+ The Quicktime spec says it doesn't matter which media track the
+ chap atom is on but it has to be an enabled track. */
+ MP4TrackId textTrack;
+ textTrack = MP4AddChapterTextTrack(m->file, 1);
+
+ m->chapter_track = textTrack;
+ m->chapter_duration = 0;
+ m->current_chapter = job->chapter_start;
+ }
+
+ /* Add encoded-by metadata listing version and build date */
+ char *tool_string;
+ tool_string = (char *)malloc(80);
+ snprintf( tool_string, 80, "HandBrake %s %i", HB_VERSION, HB_BUILD);
+ MP4SetMetadataTool(m->file, tool_string);
+ free(tool_string);
+
return 0;
}
static int MP4Mux( hb_mux_object_t * m, hb_mux_data_t * mux_data,
hb_buffer_t * buf )
{
- AVPacket pkt;
- av_init_packet(&pkt);
-
- pkt.stream_index = mux_data->track;
- pkt.data = buf->data;
- pkt.size = buf->size;
- pkt.pts = buf->start;
-
- if( buf->key )
- {
- pkt.flags |= PKT_FLAG_KEY;
- }
-
- av_interleaved_write_frame( m->format, &pkt );
-
+ hb_job_t * job = m->job;
+ int64_t duration;
+ int64_t offset = 0;
+
+ if( mux_data == job->mux_data )
+ {
+ /* Video */
+
+ // if there are b-frames compute the render offset
+ // (we'll need it for both the video frame & the chapter track)
+ if ( m->init_delay )
+ {
+ offset = ( buf->start + m->init_delay ) * m->samplerate / 90000 -
+ m->sum_dur;
+ }
+ /* Add the sample before the new frame.
+ It is important that this be calculated prior to the duration
+ of the new video sample, as we want to sync to right after it.
+ (This is because of how durations for text tracks work in QT) */
+ if( job->chapter_markers && buf->new_chap )
+ {
+ struct hb_text_sample_s *sample;
+
+ // this chapter is postioned by writing out the previous chapter.
+ // the duration of the previous chapter is the duration up to but
+ // not including the current frame minus the duration of all
+ // chapters up to the previous.
+ duration = m->sum_dur - m->chapter_duration + offset;
+ if ( duration <= 0 )
+ {
+ /* The initial & final chapters can have very short durations
+ * (less than the error in our total duration estimate) so
+ * the duration calc above can result in a negative number.
+ * when this happens give the chapter a short duration (1/3
+ * of an ntsc frame time). */
+ duration = 1000 * m->samplerate / 90000;
+ }
+
+ sample = MP4GenerateChapterSample( m, duration, buf->new_chap );
+
+ if( !MP4WriteSample(m->file,
+ m->chapter_track,
+ sample->sample,
+ sample->length,
+ sample->duration,
+ 0, true) )
+ {
+ hb_error("Failed to write to output file, disk full?");
+ *job->die = 1;
+ }
+ free(sample);
+ m->current_chapter = buf->new_chap;
+ m->chapter_duration += duration;
+ }
+
+ // since we're changing the sample rate we need to keep track of
+ // the truncation bias so that the audio and video don't go out
+ // of sync. m->sum_dur_in is the sum of the input durations so far.
+ // m->sum_dur is the sum of the output durations. Their difference
+ // (in output sample rate units) is the accumulated truncation bias.
+ int64_t bias = ( m->sum_dur_in * m->samplerate / 90000 ) - m->sum_dur;
+ int64_t dur_in = buf->stop - buf->start;
+ duration = dur_in * m->samplerate / 90000 + bias;
+ if ( duration <= 0 )
+ {
+ /* We got an illegal mp4/h264 duration. This shouldn't
+ be possible and usually indicates a bug in the upstream code.
+ Complain in the hope that someone will go find the bug but
+ try to fix the error so that the file will still be playable. */
+ hb_log("MP4Mux: illegal duration %lld, bias %lld, start %lld (%lld),"
+ "stop %lld (%lld), sum_dur %lld",
+ duration, bias, buf->start * m->samplerate / 90000, buf->start,
+ buf->stop * m->samplerate / 90000, buf->stop, m->sum_dur );
+ /* we don't know when the next frame starts so we can't pick a
+ valid duration for this one so we pick something "short"
+ (roughly 1/3 of an NTSC frame time) and rely on the bias calc
+ for the next frame to correct things (a duration underestimate
+ just results in a large bias on the next frame). */
+ duration = 1000 * m->samplerate / 90000;
+ }
+ m->sum_dur += duration;
+ m->sum_dur_in += dur_in;
+ }
+ else
+ {
+ /* Audio */
+ duration = MP4_INVALID_DURATION;
+ }
+
+ // Here's where the sample actually gets muxed.
+ if( !MP4WriteSample( m->file,
+ mux_data->track,
+ buf->data,
+ buf->size,
+ duration,
+ offset,
+ ((buf->frametype & HB_FRAME_KEY) != 0) ) )
+ {
+ hb_error("Failed to write to output file, disk full?");
+ *job->die = 1;
+ }
+
return 0;
}
static int MP4End( hb_mux_object_t * m )
{
- hb_log("MP4End: enter");
- av_write_trailer( m->format );
- hb_log("av_write_trailer: complete");
-
- url_fclose( &m->format->pb );
- hb_log("url_fclose: complete");
- av_free( m->format );
-
- hb_log("MP4End: exit");
+ hb_job_t * job = m->job;
+
+ /* Write our final chapter marker */
+ if( m->job->chapter_markers )
+ {
+ int64_t duration = m->sum_dur - m->chapter_duration;
+ /* The final chapter can have a very short duration - if it's less
+ * than a second just skip it. */
+ if ( duration >= m->samplerate )
+ {
+
+ struct hb_text_sample_s *sample = MP4GenerateChapterSample( m, duration,
+ m->current_chapter + 1 );
+ if( ! MP4WriteSample(m->file, m->chapter_track, sample->sample,
+ sample->length, sample->duration, 0, true) )
+ {
+ hb_error("Failed to write to output file, disk full?");
+ *job->die = 1;
+ }
+ free(sample);
+ }
+ }
+
+ if (job->areBframes)
+ {
+ // Insert track edit to get A/V back in sync. The edit amount is
+ // the init_delay.
+ int64_t edit_amt = m->init_delay * m->samplerate / 90000;
+ MP4AddTrackEdit(m->file, 1, MP4_INVALID_EDIT_ID, edit_amt,
+ MP4GetTrackDuration(m->file, 1), 0);
+ if ( m->job->chapter_markers )
+ {
+ // apply same edit to chapter track to keep it in sync with video
+ MP4AddTrackEdit(m->file, m->chapter_track, MP4_INVALID_EDIT_ID,
+ edit_amt,
+ MP4GetTrackDuration(m->file, m->chapter_track), 0);
+ }
+ }
+
+ MP4Close( m->file );
+
+ if ( job->mp4_optimize )
+ {
+ hb_log( "muxmp4: optimizing file" );
+ char filename[1024]; memset( filename, 0, 1024 );
+ snprintf( filename, 1024, "%s.tmp", job->file );
+ MP4Optimize( job->file, filename, MP4_DETAILS_ERROR );
+ remove( job->file );
+ rename( filename, job->file );
+ }
+
return 0;
}