S-Video, also known as Y/C, is a higher-quality video signal used by high-end
consumer video equipment. The image looks sharper and has better color than a
composite video image because S-Video keeps the color and brightness information
separate on two cables. Most low-cost analog-to-digital video interfaces have S-Video
as their highest-quality video connector. Use care when working with S-video
connectors; the four delicate pins can be bent easily.
Connecting Professional Video and Audio Equipment