According to this source (vlc) lpcm dvd audio supports lower frequencies like 44100/32000 hz - useful for direct dv transcoding for example .... https://github.com/videolan/vlc/blob/master/modules/codec/lpcm.c see lines 524, 608 Does this mean that libavcodec/pcm-dvdenc.c can be trivially extended to support those ? Same question for mplex. (it only supports 48/96 khz lpcm audio). I also found this table via mjpeg-users archives: https://dvd.sourceforge.net/dvdinfo/lpcm.html it lists dynamic range/gain (?) setting equations. Not mplex nor ffmpeg support setting this to anything but hardcoded 0x80 This might be source of my "too loud" lpcm dvd experiments because I was making lpcm file via cinelerra-gg's raw pcm output format (using libsndfile internally).