What is s video (S-Video)?
S-video is an improvement over a composite video that carries all video data in a single signal over a single wire. s video transmits brightness and color information as two separate signals over two wires. Because of this separation, video transmitted over S video has a higher quality than that of composite video.
S video ports can have 4, 7, or 9 pins. You will recognize them on your computer or TV because they are around ports with several holes and a slightly flat bottom.
Two combined chrominance signals (C) over independent cables. The standard for this type of connection is a round 4-pin connector. S-Video transmission can also be arranged via Scart
S Video cable is used to transmit a video signal. Signals are transmitted not through one wire, but through different ones. This makes it possible to transmit a higher-quality image.