mpv GUI to modify the parameters to downmix surround sound to stereo
a GUI video player that allows to fine-tune the coefficients of the downmix formula while the video keeps playing
mpv with interactive control of the audio filter option
mpv --af='pan="stereo|..."' video.mp4
aka: equalizer for surround audio channels
please remember to normalize the volume. in most movie releases, audio tracks are too quiet
- downmix to stereo:
ffmpeg -af pan=... - analyze volume:
ffmpeg -af loudnorm=i=-14:lra=7:tp=-2:offset=0:linear=true:print_format=json - downmix to stereo and normalize volume:
ffmpeg -af pan=...,loudnorm=...
see also