RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-01-03 21:42:09 +00:00
Code Issues Projects Releases Wiki Activity

avcodec/mpeg12dec: Fixes runtime error: division by zero

Browse Source 
Fixes: 1464/clusterfuzz-testcase-minimized-4925445571084288

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-11 00:49:31 +02:00
parent 60765cc42e
commit c0ece1f4ad
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
libavcodec/mpeg12dec.c
View File

@ -1242,7 +1242,8 @@ static int mpeg_decode_postinit(AVCodecContext *avctx)
if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
// MPEG-1 aspect
avctx->sample_aspect_ratio = av_d2q(1.0 / ff_mpeg1_aspect[s->aspect_ratio_info], 255);
AVRational aspect_inv = av_d2q(ff_mpeg1_aspect[s->aspect_ratio_info], 255);
avctx->sample_aspect_ratio = (AVRational) { aspect_inv.den, aspect_inv.num };
} else { // MPEG-2
// MPEG-2 aspect
if (s->aspect_ratio_info > 1) {