Various recommendations that have come to me via email.
Dear BLOGGER checker, I am a REAL PERSON, see one of the drafts where I have given you my phone number to reach me.
QTCoffee: "QTCoffee 1.2.5 is a set of command-line Mac OS X utilities for manipulating QuickTime movies and other QuickTime readable media (AVIs, MPEGs, as well as audio files such as MP3s and AACs)."