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avformat/timecode: use 64bit for intermediate for rounding in fps_from_frame_rate()
Fixes: 62276/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-4802790784303104 Fixes: signed integer overflow: 1768972133 + 968491058 cannot be represented in type 'int' Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit 3d8d778a68531b406455f8090d81216ef374ab75) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -210,7 +210,7 @@ static int fps_from_frame_rate(AVRational rate)
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{
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if (!rate.den || !rate.num)
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return -1;
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return (rate.num + rate.den/2) / rate.den;
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return (rate.num + rate.den/2LL) / rate.den;
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}
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int av_timecode_check_frame_rate(AVRational rate)
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