[FFmpeg-trac] #10985(avcodec:new): Divide by zero in libavcodec/dovi_rpuenc.c:251

[FFmpeg]

#10985: Divide by zero in libavcodec/dovi_rpuenc.c:251
-------------------------------------+-------------------------------------
             Reporter:  Levon        |                     Type:  defect
  Gevorgyan                          |
               Status:  new          |                 Priority:  important
            Component:  avcodec      |                  Version:  git-
             Keywords:  dolby_e      |  master
  libsvtav1                          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 How to reproduce:
 {{{
 % ffmpeg -i "fail.mkv" -y -pix_fmt yuv420p10le \
     -c:V libsvtav1 -dolbyvision 1 "av1_fail.mkv"

 libsvtav1 Cmake flags
 -DCMAKE_BUILD_TYPE=Release -DSVT_AV1_LTO=ON \
           -DENABLE_AVX512=ON -DBUILD_TESTING=OFF \
           -DCOVERAGE=OFF \
           -DCMAKE_C_FLAGS="-O3 -march=native" \
           -DCMAKE_CXX_FLAGS="-O3 -march=native"

 ffmpeg configure flags
 ffmpeg version git-2024-04-29-08781eb
   built with gcc 12 (Debian 12.2.0-14)
   configuration: --enable-libsvtav1 --enable-librav1e \
     --enable-libaom --enable-libvmaf --enable-libdav1d \
     --enable-libopus --arch=x86_64 --cpu=native --enable-lto \
     --extra-cflags='-O3 -march=native' --extra-cxxflags='-O3
 -march=native' \
     --disable-doc --disable-htmlpages --disable-podpages --disable-
 txtpages
 }}}

 This results in a crash of ffmpeg due to divide by zero.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10985>
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