AtomicParsley is a lightweight command line program for reading, parsing and setting metadata into MPEG-4 files supporting these styles of metadata:

* iTunes-style metadata into .mp4, .m4a, .m4p, .m4v, .m4b files * 3gp-style assets (3GPP TS 26.444 version 6.4.0 Release 6 specification conforming) in 3GPP, 3GPP2, MobileMP4 & derivatives * ISO copyright notices at movie & track level for MPEG-4 & derivative files * uuid private user extension text & file embedding for MPEG-4 & derivative files