Capture Device Links:
Pinnacle makes both external boxes that connect between the video device and your computer's FireWire or USB-2 port as well as cards (PC boards) that plug into a PCI slot inside your PC.
I have a
Hauppauge PVR-250 video capture card which has a built-in hardware MPEG-2 encoder. This means your CPU doesn't have to do any work to encode, and I don't have any dropped-frame problems. But, it only captures in MPEG-2 which doesn't edit very well.
The most popular video capture cards are the various TV-Wonder and All-In-Wonder cards made by
ATI.
Most of the internal cards have a TV tuner, so you can watch TV on you TV, or use it as a TiVo.