several months back I was asked if there was a way to use QuickTime and Applescript to perform some specific tasks. I had promised a link to the scripts and finally got my act together to post this message... better late than never (or is that supposed to be better never late?)
here is a link, from apple's website, to a collection of Applescripts which tap into a lot of hidden features of QuickTime that are well worth exploring!
http://www.apple.com/applescript/quicktime/
In particular, scroll down to the Script menu scripts section of that page.
Using the scripts requires Apple's Script menu be installed which may be downloaded from this link