Comment # 17 on bug 1196685 from Dave Plater

(In reply to Takashi Iwai from comment #16)
> OK, I confirmed that audacity's export should work without ffmpeg binary
> when it's linked with the proper libavformat.  Then Recommends of ffmpeg-3
> itself looks superfluous to me...  At least with the currently released
> audacity package, it works fine without ffmpeg-3 (I replaced it with
> ffmpeg-4) for exporting to m4a, mp3 and ogg.

I have a tendency to accept hard requires that have been around for a long
time, I need to work on removing them.
Busy testing myself and will remove the ffmpeg requires altogether. Audacity
has a preference function to locate the correct libavformat. Will see what
happens if ffmpeg(ffmpeg-3 named ffmpeg in the case of Leap) isn't present.
I've always taken it for granted that the ffmpeg binary is required.