(windows) command line m4a tagger?

[paultaylor]

(23-11-2017 10:20)simoncn Wrote:  I'm not sure why you think mp4 tags are in such a mess. The spec supports multiple values for all tag names and there are taggers and servers that correctly implement the spec.

It seems there are two ways to do the same thing, that always causes problems. In a similar way Wav files support both INFO LIST and ID3 metadata blocks makes things more difficult.