I wanted a couple of YouTube classic audio recordings for my archive, which natively come out as #opus audio files. THEN I wanted to add cover art. Oh my, it's awkward.
#exiftool can add cover art but not for opus.
#VLC can edit cover art, but fails for opus.
#ffmpeg should be able to do it, but it failed.
Installing, #opusdec and #opusenc worked, but it decodes the opus to a huge wav file then recodes with the "--picture" tag pulling in the cover art.
Too hard!
