QuickTime 7.2 adds new export presets for the iPhone and an improved H.264 codec. Publishing movies on the Web and mobile devices has never been more beautiful. David Battino just published QuickTime Web Movie Secrets on O’Reilly’s Digital Media site. He’s included some great playback and embedding techniques. Definitely worth a read.
If you want to learn more about QuickTime Pro 7.2 and its capabilities, you might want to download the User Guide from Apple.