I've been using VideoTag for quite a while as an excellent front end to AtomicParsley to get all of the correct metadata into my MP4/M4V files. This allows me to get the metadata in for the description, MPAA rating and release year that iTunes doesn't permit. The problem is with HD movies that are over 4GB and can't be opened by AtomicParsley. Has anyone else discovered an alternate solution for accessing all the atoms in large files?