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janglapuk/ffmpeg-downmix.md

Created October 17, 2024 00:14
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FFmpeg Downmix 5.1 to 2.1 Stereo
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ffmpeg-downmix.md 
ffmpeg -i input.mp4 -af \
  "pan=stereo|FL<1.0*FL+0.707*FC+0.707*BL|FR<1.0*FR+0.707*FC+0.707*BR" \
  -c:v copy \
  -c:a aac -b:a 128k \
  output.mp4
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