[SOLVED] Converting MIDI file to MusicXML via command line

See: https://musescore.org/it/project/batch-convert

"Convert" is not really the right terminology or idea here. I'm not just talking about words. When you import a midi file of any complexity/real composition into a notation program, you are guaranteed to get inaccuracies of many kinds, particularly rhtyhmic notation (articulation mistaken for), enharmonic note equivalents, and reconstruction of multiple voices/chords on a staff. The result of importing a midi file is, almost without exception, a mess that you have to go through and deconfuse manually. It is very unlikely that you will ever see a playable/usable score as the result of midi importation (in any application) without sustained human effort. I've been there more than a few times.

Since you use the same command to open .mscx, .mscz, .mid, .gp? and so forth, musescore has the ability to open them from the command line. Any format it's capable of writing is an option for the destination format from any type it can open. Do keep in mind that, as BSG said, midi files are a terrible format to transfer files from one program to another so user intervention is almost always called for. If you're happy with the batch results that's good, but I believe this would prove to be the exception.