ViewCast Osprey 440 — 4-channel analog video and audio capture card. Part number 94-00195.
Features:

4x independent analog video inputs (composite/S-Video via BNC)
Simultaneous capture from all 4 channels
64-bit PCI interface
Hardware video scaling and colour space conversion
Compatible with Windows DirectShow and AVStream applications
Used in broadcast, streaming, surveillance, government, and medical applications

Pulled from working Red Bee Media broadcast playout infrastructure. Untested, sold as used. Multiple available, message for quantity discount.