Whats the easiest way to display an SVideo or Composite video signal real time on my Mac? I'd like to use my Powerbook as a TV, but mostly for things like a Gamecube. A TV tuner is not required. Since this is for my Powerbook, PCMCIA, USB, or Firewire is a connection possibility.
The slimmer the device, the better. I've found quite a few solutions, but none seem to be Mac compatible, or are geared more towards video editing (thus they automaticially add $200 to the price)