Cocoa source code showing how to use a QuickTime Sequence Grabber (e.g. an iSight camera) from your Cocoa application.
Update. I’ve uploaded a new version of the SequenceGrabber source code that should compile cleanly on any Mac OS X 10.3 machine. Thanks to “jlecuyer” for pointing out the original version was broken.
Update: Information on new version here
Update: Link to source deleted, see my ToxicMedia page.