[FFmpeg-user] Converting wma to mp3, avoiding joint stereo

Alan Corey alan01346 at gmail.com
Sat Apr 17 20:42:02 EEST 2021

New to the list, I've used ffmpeg for years on video files.  But I got
from a torrent a bunch of classical wma files which not much in Linux
can deal with.  So I did the basic
ffmpeg -i somefile.wma somefile.mp3
And it works, but mpg123 tells me the file is joint stereo.  It's
quite possible the wma files are joint stereo, I don't know anything
about them, but when I convert a flac file (to wav then mp3) I can at
least nominally output true stereo.  Maybe it doesn't actually
accomplish anything but I call LAME with -m s.  Is that possible with
ffmpeg?  How?  Do I need to get into channel mapping?

Joint stereo I remember from the early days of fm stereo that had to
also be playable on mono radios.  Better than mono but not as good as
true stereo.


Education is contagious.

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