[FFmpeg-trac] #9342(undetermined:new): Audio clipping when joining segments with aselect filter

[FFmpeg]

#9342: Audio clipping when joining segments with aselect filter
-------------------------------------+-------------------------------------
             Reporter:  xamarin      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 How to reproduce:
 Create a destination video by cutting 2 pieces of video from a big file
 and merging them together. In they place where they join, it produces a
 clipping noise on speakers, due to the sound waveform.
 {{{
 % ffmpeg -report -y -i in.mp4 -vf
 "select='between(t,72.75,74)+between(t,644.7,670)',
 setpts=N/FRAME_RATE/TB" -af
 "aselect='between(t,72.75,74)+between(t,644.7,670)', asetpts=N/SR/TB" -c:v
 libx265 -x265-params pass=1 -b:v 1700k -c:a aac -b:a 160k -f mp4 NUL &&
 ffmpeg -y -i in.mp4 -vf
 "select='between(t,72.75,74)+between(t,644.7,670)',
 setpts=N/FRAME_RATE/TB" -af
 "aselect='between(t,72.75,74)+between(t,644.7,670)', asetpts=N/SR/TB" -c:v
 libx265 -x265-params pass=2 -b:v 1700k -c:a aac -b:a 160k -f mp4 out.mp4
 $ ffmpeg --version
 ffmpeg version 2021-07-21-git-f614390ecc-full_build-www.gyan.dev Copyright
 (c) 2000-2021 the FFmpeg developers
   built with gcc 10.3.0 (Rev5, Built by MSYS2 project)
   configuration: --enable-gpl --enable-version3 --enable-static --disable-
 w32threads --disable-autodetect --enable-fontconfig --enable-iconv
 --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-
 libsnappy --enable-zlib --enable-librist --enable-libsrt --en
 able-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-
 libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e
 --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265
 --enable-libxvid --enable-libaom --enable-libopenjpe
 g --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype
 --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg
 --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec
 --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva
 2 --enable-libmfx --enable-libglslang --enable-vulkan --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      57.  1.100 / 57.  1.100
   libavcodec     59.  3.102 / 59.  3.102
   libavformat    59.  4.101 / 59.  4.101
   libavdevice    59.  0.100 / 59.  0.100
   libavfilter     8.  0.103 /  8.  0.103
   libswscale      6.  0.100 /  6.  0.100
   libswresample   4.  0.100 /  4.  0.100
   libpostproc    56.  0.100 / 56.  0.100
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9342>
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