ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Jun 20 00:05:12 2024 +0200| [0993ef675f06042402a97b08a60155c65dae8ba7] | committer: Michael Niedermayer
avcodec/mpeg12enc: Use av_rescale() in vbv_buffer_size computation Fixes: signed integer overflow: 20 * 2314885530818453759 cannot be represented in type 'long' Fixes: 69098/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG2VIDEO_fuzzer-6107989688778752 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0993ef675f06042402a97b08a60155c65dae8ba7 --- libavcodec/mpeg12enc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c index e35c916b61..42c0f94930 100644 --- a/libavcodec/mpeg12enc.c +++ b/libavcodec/mpeg12enc.c @@ -330,7 +330,7 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s) else /* VBV calculation: Scaled so that a VCD has the proper * VBV size of 40 kilobytes */ - vbv_buffer_size = ((20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024; + vbv_buffer_size = av_rescale_rnd(s->bit_rate, 20, 1151929 / 2, AV_ROUND_ZERO) * 8 * 1024; vbv_buffer_size = (vbv_buffer_size + 16383) / 16384; put_sbits(&s->pb, 18, v); _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
