I’ve got a set of audio recordings, each for one individual in the session (I’ve compressed them individually to mono), I import them to Audacity and it auto-labels them with the file name (which is perfect as the filename is the persons’ name already).
The problem is when I export it (into m4a or flac, a format that supports metadata), I select custom channel mapping… There is no option to set the channel metadata, i.e. title or author, something to indicate who that channel is. This is the feature request part…
so, ok, I check the order of the mapping (alphabetical based on channel name) and tag them myself, e.g.:
ffmpeg -i 20251211.m4a -map 0:a -metadata:s:a:0 title=“person1” -metadata:s:a:1 title=“person2” -metadata:s:a:2 title=“person3” -c:a copy -y test.m4a
The next problem is when importing back to Audacity (for later editing) it does not read the channel title metadata and instead names them [filename][stream#]. I consider this a bug…