I noticed there was also a question on how to capture a video 'stream'. Quicktime Broadcaster (
http://www.apple.com/quicktime/broadcaster/) is FREE, and encodes video from a 'stream' (any firewire video source such as camera or Analog-to-DV converter) in real time. A little-known feature, however, is the option to save this stream to disk while broadcasting. So you can actually set this up to 'stream' to the 'bit bucket' if you will (showing my age here) at whatever your desired resolution is (320 x 180 for iPod video), and have Quicktime Broadcaster save this to a .MOV file automatically. You have a lot of choices for encoder codec's and quality settings which will affect your quality / size ratio.
Cheers!
PowerMac: Dual 1ghz G4, Superdrive, 1.5 GB Ram