(windows) command line m4a tagger?

[skeptic Mike]

(20-11-2017 21:30)simoncn Wrote:  Which platform are you using to run your tagging program?

Windows 10. I'd expect to use powershell for scripting. I would probably use mp3tag for those times when a GUI is convenient. I don't anticipate moving to GNU/linux for interactive computing, although I do have an old HP microserver that essentially acts as a NAS, and is running Ubuntu 16.04. I has a minimal lxde and X2Go, so I can run interactive sessions on it. e.g. I could use that to investigate the python mutagen library, before trying to figure out the best way of using this on windows if that's the only feasible route.

For clarity, I'm not using the AtomicParsley from the old soureceforge site, but the fork from http://bitbucket.org/wez/atomicparsley, for which the windows builds come from: https://bitbucket.org/jonhedgerows/atomi...downloads/

The only odd thing about the tagging I do, is that I use the unsynced lyrics tag to provide extra textual information. I set minimserver to use that as the comment tag, and BubbleUpnp will happily show that on my ageing tablet as part of the metadata. All the tagging programs that I've seen have @lyr (Lyrics) as the only standard tag which can contain a significant amount of text.