[FFmpeg-trac] #10294(avfilter:new): convolution filter's rdiv option ignored

[FFmpeg]

#10294: convolution filter's rdiv option ignored
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             Reporter:  Mark      |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avfilter  |                  Version:  6.0
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 Summary of the bug:

 convolution filter "0rdiv" option seems ignored, instead the default "sum
 of all matrix elements" value is always used.

 Simple example using ffplay below, a 3x3 box blur with an rdiv that should
 result in the image roughly half as bright as original. I can see the
 matrix is applied, but the brightness is always the same as original
 regardless of the 0rdiv value specified.

 Result is the same when using ffmpeg to actually produce a new video.

 How to reproduce:
 {{{
 % ffplay.exe -i .\in.mp4 -vf "convolution=0m=1 1 1 1 1 1 1 1 1:0rdiv=5"
 ffplay version 6.0-full_build-www.gyan.dev Copyright (c) 2003-2023 the
 FFmpeg developers
   built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
   configuration: --enable-gpl --enable-version3 --enable-shared --disable-
 w32threads --disable-autodetect --enable-fontconfig --enable-iconv
 --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma
 --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt
 --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray
 --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d
 --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e
 --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265
 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl
 --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-
 libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-
 liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-
 amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec
 --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-
 libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-
 libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-
 libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora
 --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-
 libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex
 --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite
 --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-
 chromaprint
   libavutil      58.  2.100 / 58.  2.100
   libavcodec     60.  3.100 / 60.  3.100
   libavformat    60.  3.100 / 60.  3.100
   libavdevice    60.  1.100 / 60.  1.100
   libavfilter     9.  3.100 /  9.  3.100
   libswscale      7.  1.100 /  7.  1.100
   libswresample   4. 10.100 /  4. 10.100
   libpostproc    57.  1.100 / 57.  1.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\in.mp4':q=    0B f=0/0
 }}}

 Regards,
 Mark.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10294>
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