Alternatively referred to as Y/C video, S-Video is short for Super Video. It is a video transmission format, and a type of connection found on video devices. It uses a round connector interface, and cable that transmits video luminance (Y) and chrominance (C) signals separately. When received by the TV or other display devices, this generates a better picture compared to composite video. The picture shows an example of an S-Video connector on the back of a video card.