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mov: Dont try to calculate with unknown durations, fix division by 0

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-11-14 14:07:58 +01:00
parent a1b5c9634e
commit 87d073eacc
1 changed files with 3 additions and 2 deletions
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libavformat/mov.c
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@ -2232,8 +2232,9 @@ static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
((double)st->codec->width * sc->height), INT_MAX);
}
av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
sc->time_scale*st->nb_frames, st->duration, INT_MAX);
if (st->duration > 0)
av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
sc->time_scale*st->nb_frames, st->duration, INT_MAX);
#if FF_API_R_FRAME_RATE
if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))