This makes all my songs have roughly the same volume. What the command is doing is upping the volume by the max_volume value which should make the new max volume 0 dB. I need it to use the max_volume value and I suspect it's using the other one. One is mean_volume and the other is max_volume.

If you look waaaaaay down toward the end you'll see there's two 'volumes' in the output. Video:0kB audio:42928kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown Header missing speed= 441xĮrror while decoding stream #0:0: Invalid data found when processing input Code: Select all ffmpeg -i 20-20.mp3 -af 'volumedetect' -vn -sn -dn -f null /dev/nullįfmpeg version 3.2.12-1~deb9u1 Copyright (c) 2000-2018 the FFmpeg developersīuilt with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516Ĭonfiguration: -prefix=/usr -extra-version='1~deb9u1' -toolchain=hardened -libdir=/usr/lib/x86_64-linux-gnu -incdir=/usr/include/x86_64-linux-gnu -enable-gpl -disable-stripping -enable-avresample -enable-avisynth -enable-gnutls -enable-ladspa -enable-libass -enable-libbluray -enable-libbs2b -enable-libcaca -enable-libcdio -enable-libebur128 -enable-libflite -enable-libfontconfig -enable-libfreetype -enable-libfribidi -enable-libgme -enable-libgsm -enable-libmp3lame -enable-libopenjpeg -enable-libopenmpt -enable-libopus -enable-libpulse -enable-librubberband -enable-libshine -enable-libsnappy -enable-libsoxr -enable-libspeex -enable-libssh -enable-libtheora -enable-libtwolame -enable-libvorbis -enable-libvpx -enable-libwavpack -enable-libwebp -enable-libx265 -enable-libxvid -enable-libzmq -enable-libzvbi -enable-omx -enable-openal -enable-opengl -enable-sdl2 -enable-libdc1394 -enable-libiec61883 -enable-chromaprint -enable-frei0r -enable-libopencv -enable-libx264 -enable-sharedĭuration: 00:04:09.26, start: 0.025056, bitrate: 196 kb/s

Ffmpeg python batch