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avcodec/utils: Use 64bit for aspect ratio calculation in avcodec_string()

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Fixes integer overflow
Fixes: 3a45b2ae02f2cf12b7bd99543cdcdae5/asan_heap-oob_1dff502_8022_899f75e1e81046ebd7b6c2394a1419f4.mov

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 4f03bebc79)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-11-28 17:26:05 +01:00
parent c1d29678f1
commit 6c25411c06
1 changed files with 2 additions and 2 deletions
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4
libavcodec/utils.c
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@ -3115,8 +3115,8 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
if (enc->sample_aspect_ratio.num) {
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
enc->width * enc->sample_aspect_ratio.num,
enc->height * enc->sample_aspect_ratio.den,
enc->width * (int64_t)enc->sample_aspect_ratio.num,
enc->height * (int64_t)enc->sample_aspect_ratio.den,
1024 * 1024);
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" [SAR %d:%d DAR %d:%d]",