I’m shocked… Maybe I’m missing some well-hidden FFmpeg flag, but for the life of me I can’t find a way to pull out the supported MIME types.
There are some commands that come sort of close, but not MIME types. For example,
ffmpeg -formats will list supported formats, which give a general idea of what types of files can be encoded/decoded, but not MIME types.
After over an hour googling (I’m really persistent…), I’ve come to the conclusion that a clean solution doesn’t exist. For that reason, I’ve developed my own unclean solution. It’s dirty, but it meets my needs. Maybe someone out there will also find it useful.