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demux_mkv: don't trust DefaultDuration for audio

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It's used to interpolate timestamps for sub-packets ("block laces").
It's occasionally broken, and not really needed by us.
This commit is contained in:
wm4 2016-02-24 21:48:24 +01:00
parent f0b15ad447
commit 503c6f7fd6
1 changed files with 3 additions and 5 deletions
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8
demux/demux_mkv.c
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@ -1687,11 +1687,9 @@ static int demux_mkv_open_audio(demuxer_t *demuxer, mkv_track_t *track)
sh_a->samplerate = 48000;
}
// Some files have broken default DefaultDuration set, which will lead to
// audio packets with incorrect timestamps. This follows FFmpeg commit
// 6158a3b, sample see FFmpeg ticket 2508.
if (sh_a->samplerate == 8000 && strcmp(codec, "ac3") == 0)
track->default_duration = 0;
// This field tends to be broken, and our decoder can interpolate the
// missing timestamps anyway.
track->default_duration = 0;
sh_a->extradata = extradata;
sh_a->extradata_size = extradata_len;