How does s-video cable work between TV and computer? Does it carry Video signal as well as audio signal?
S-video (the S stands for “separate” as opposed to “composite”) is just a higher-quality way of getting a video signal from one place to another via cables. Video for television in the home is usually composite video, which is carried on those cables with RCA connectors that everyone’s seen connecting DVD players and game consoles to the video inputs of TVs everywhere. Composite video suffers from a problem called crosstalk, where the chrominance (color) subcarrier interferes with the luminance (black and white) signal because they’re mixed together on the same cable. In practice, manufacturers generally put filters in line to limit the bandwidth of the luminance signal to reduce the interference, and this limits the sharpness of the picture. S-video splits the luminance and chrominance signals (generally called Y and C by engineers) onto separate cables and combines those cables onto a single connector. Keeping the signals separate eliminates the crosstalk and allows full resolution f
