[FFmpeg-user] Downmixing with low frequency channel

[Marcin Czosnek]

Hey!

I want to downmix some 2.1, 3.1, 4.1, 5.1, 7.1 music samples to stereo.


I have used -ac 2 option but it discards LFE and I want to keep it. How
should I do it? should I use pan filter? How the formula should look like?

Thanks in advance,
Marcin