The Digital Story has a short post on how to painlessly snag still frames from DSLR footage with Aperture 3, which now supports video. For what it’s worth, 1080p footage is approximately 2 megapixels (2.1 MP) and 720p is about 1 megapixel (0.9 MP).

Rodney's Adsense-Deluxe Add ons plugged in.