diff options
Diffstat (limited to 'libavformat/movenc.c')
| -rw-r--r-- | libavformat/movenc.c | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/libavformat/movenc.c b/libavformat/movenc.c index 1d9497283f..450b3f50f2 100644 --- a/libavformat/movenc.c +++ b/libavformat/movenc.c @@ -2761,10 +2761,28 @@ static int mov_write_minf_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext return update_size(pb, pos); } +static int64_t calc_pts_duration(MOVMuxContext *mov, MOVTrack *track) +{ + if (track->tag == MKTAG('t','m','c','d')) { + // tmcd tracks gets track_duration set in mov_write_moov_tag from + // another track's duration, while the end_pts may be left at zero. + // Calculate the pts duration for that track instead. + return av_rescale(calc_pts_duration(mov, &mov->tracks[track->src_track]), + track->timescale, mov->tracks[track->src_track].timescale); + } + if (track->end_pts != AV_NOPTS_VALUE && + track->start_dts != AV_NOPTS_VALUE && + track->start_cts != AV_NOPTS_VALUE) { + return track->end_pts - (track->start_dts + track->start_cts); + } + return track->track_duration; +} + static int mov_write_mdhd_tag(AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track) { - int version = track->track_duration < INT32_MAX ? 0 : 1; + int64_t duration = calc_pts_duration(mov, track); + int version = duration < INT32_MAX ? 0 : 1; if (track->mode == MODE_ISM) version = 1; @@ -2786,7 +2804,7 @@ static int mov_write_mdhd_tag(AVIOContext *pb, MOVMuxContext *mov, else if (!track->entry) (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0); else - (version == 1) ? avio_wb64(pb, track->track_duration) : avio_wb32(pb, track->track_duration); /* duration */ + (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration); /* duration */ avio_wb16(pb, track->language); /* language */ avio_wb16(pb, 0); /* reserved (quality) */ @@ -2836,8 +2854,9 @@ static void write_matrix(AVIOContext *pb, int16_t a, int16_t b, int16_t c, static int mov_write_tkhd_tag(AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track, AVStream *st) { - int64_t duration = av_rescale_rnd(track->track_duration, MOV_TIMESCALE, - track->timescale, AV_ROUND_UP); + int64_t duration = av_rescale_rnd(calc_pts_duration(mov, track), + MOV_TIMESCALE, track->timescale, + AV_ROUND_UP); int version = duration < INT32_MAX ? 0 : 1; int flags = MOV_TKHD_FLAG_IN_MOVIE; int rotation = 0; @@ -2983,8 +3002,9 @@ static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track) static int mov_write_edts_tag(AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track) { - int64_t duration = av_rescale_rnd(track->track_duration, MOV_TIMESCALE, - track->timescale, AV_ROUND_UP); + int64_t duration = av_rescale_rnd(calc_pts_duration(mov, track), + MOV_TIMESCALE, track->timescale, + AV_ROUND_UP); int version = duration < INT32_MAX ? 0 : 1; int entry_size, entry_count, size; int64_t delay, start_ct = track->start_cts; @@ -3270,7 +3290,8 @@ static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov) for (i = 0; i < mov->nb_streams; i++) { if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) { - int64_t max_track_len_temp = av_rescale_rnd(mov->tracks[i].track_duration, + int64_t max_track_len_temp = av_rescale_rnd( + calc_pts_duration(mov, &mov->tracks[i]), MOV_TIMESCALE, mov->tracks[i].timescale, AV_ROUND_UP); |