Found on DVD players, DBS receivers, Super VHS VCRs, TVs, and other
kinds of A/V gear, S-video inputs and outputs use a round, 4-pin jack
to pass video signals. The "S" in S-video stands for "separate":
S-video connections transmit the chrominance (color) and luminance
(brightness) portions of a video signal along different paths,
allowing them to be processed separately.