Many are ready for you to try out at http://www.moviecodec.com
Your post didn't offer any criteria so not much can be offered other than some info site.
I have a PixelView Play TV Pro Card (ChipSet BT878/Philips) Rev. 8d. I can capture video in raw mode (without compression), using the software that comes with the card. But I would like to capture video in compressed mode. What free software/CODECs do you suggest me ?