FFMPEG 5.0 support

[LWinterberg]

https://ffmpeg.org/download.html#release_5.0

[CanadianJeff]

i'm confused why would you create a duplicate issue that I already started and close mine it's kinda rude

Should to be an important task because Audacity doesn't work on Fedora 36 due to this distro provides ffmpeg 5.0.