I was recently able to supply DuronClocker with a partial pinout for the Rage Theater chip found on Radeon 8500s.

Technically, the RT1 ("Ripper") can capture CVBS/SVHS video - the feature just isn't used on 8500s apart from the AIW/VIVO versions.

Theoretically, all you need to do is connect the right pins up for signalling, flash the BIOS to a VIVO-enabled one, install the necessary drivers and cross your fingers.

No pressure, dude.

MuFu.

P.S. Hehehehehee...