[FFmpeg-trac] #9976(avfilter:new): fftdenoiz gives corrupt results

[FFmpeg]

#9976: fftdenoiz gives corrupt results
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             Reporter:  erjiang   |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avfilter  |                  Version:  unspecified
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 Regression in the 3d FFT Denoiser filter in libavfilter, with ffmpeg 5.0.1
 as shipped with Kdenlive 22.08.1 (AppImage). When rendered, the bottom
 lines of the video are corrupted and are black, green, or garbage data.

 How to reproduce:
 {{{
 $ ffmpeg -version
 ffmpeg version 5.0.1 Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 9 (GCC)
 configuration: --enable-shared --disable-debug --disable-doc --enable-gpl
 --enable-version3 --enable-libmp3lame --cc=gcc --cxx=g++ --enable-libopus
 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265
 --enable-libass --enable-libaom --enable-libdav1d --enable-libzimg
 --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-cuvid --enable-
 vaapi --enable-vdpau --enable-libmfx
 --prefix=/home/appimage/Craft/BC/linux-64-gcc
 --libdir=/home/appimage/Craft/BC/linux-64-gcc/lib
 libavutil      57. 17.100 / 57. 17.100
 libavcodec     59. 18.100 / 59. 18.100
 libavformat    59. 16.100 / 59. 16.100
 libavdevice    59.  4.100 / 59.  4.100
 libavfilter     8. 24.100 /  8. 24.100
 libswscale      6.  4.100 /  6.  4.100
 libswresample   4.  3.100 /  4.  3.100
 libpostproc    56.  3.100 / 56.  3.100
 $ ffmpeg -i Steatocranus_casuarius_-_Buckelkopfbuntbarsch_mit_Jungen.m4v
 -vf fftdnoiz=sigma=30:amount=1.0:block=6:overlap=0.5 ffmpegout.mp4
 }}}

 The source file can be found here: https://invent.kde.org/erjiang
 /kdenlive-backcompat/-/tree/master/projects/footage

 This seems to be a regression because 4.4.2-0ubuntu0.22.04.1 does not have
 the same problem.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9976>
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