mp4 (or m4a) editor

[Paul Goyette <paul%whooppee.com@localhost>]

I've got about 1000 .mp4/.m4a files with no video, only audio.  Most of
these files have embedded "album art" (presumably in .jpg format?).

But there are a few files that don't seem to have the .jpg

I can get .jpg from various sources, but (I think) I need some sort
of editor to insert the .jpg into the .m4a files.

Any recommendations?

+---------------------+--------------------------+----------------------+
| Paul Goyette (.sig) | PGP Key fingerprint:     | E-mail addresses:    |
| (Retired)           | 1B11 1849 721C 56C8 F63A | paul%whooppee.com@localhost    |
| Software Developer  | 6E2E 05FD 15CE 9F2D 5102 | pgoyette%netbsd.org@localhost  |
| & Network Engineer  |                          | pgoyette99%gmail.com@localhost |
+---------------------+--------------------------+----------------------+