I have a bunch of avi's I am converting to m4v, and I can do this in QuickTime by opening the video and then go 'Save As', select a folder, select the type (iPhone, Movie, etc), blah blah blah. But I have around 100 videos I want to do this with. Command line options? Or batch processing options in the GUI? Enlighten me, please.
This is QuickTime X on Snow Leopard.