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set wrong_dts for iMovie created files which has huge ctts delay, fix ffmpeg_sample.m4v 

Originally committed as revision 18181 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2009-03-25 06:07:13 +00:00
parent 1bbeb23356
commit f03a081df0
1 changed files with 6 additions and 0 deletions
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6
libavformat/mov.c
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@ -1281,6 +1281,12 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
int rescaled = sc->time_offset < 0 ? av_rescale(sc->time_offset, sc->time_scale, mov->time_scale) : sc->time_offset;
assert(sc->time_offset % sc->time_rate == 0);
current_dts = - (rescaled / sc->time_rate);
if (sc->ctts_data && sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
/* more than 16 frames delay, dts are likely wrong
this happens with files created by iMovie */
sc->wrong_dts = 1;
st->codec->has_b_frames = 1;
}
}
/* only use old uncompressed audio chunk demuxing when stts specifies it */