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movdec: Try to recover from overreading atoms

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Fixes Ticket1596

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-08-15 03:21:19 +02:00
parent f952ae1400
commit 6093960ae3
1 changed files with 4 additions and 0 deletions
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4
libavformat/mov.c
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@ -2666,6 +2666,10 @@ static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
left = a.size - avio_tell(pb) + start_pos;
if (left > 0) /* skip garbage at atom end */
avio_skip(pb, left);
else if(left < 0) {
av_log(c->fc, AV_LOG_DEBUG, "undoing overread of %d in '%.4s'\n", -left, (char*)&a.type);
avio_seek(pb, left, SEEK_CUR);
}
}
total_size += a.size;