S-Video is an analog video signal.

It carries video data as two separate signals: brightness and colour. S-Video stands for "separate video," and is also known as Y/C (or erroneously, S-VHS and "super video").

S-Video signals are generally connected using an S-Video cable with 4 pin connectors. S-Video is commonly used to transfer data to/from TVs, computers, DVD players, video tape recorders and game consoles. Most TV-out connectors on computer's graphics cards are S-Video.

Since S-Video is a video-only signal and does not carry audio, a separate audio connection is required for transferring an audio signal.