s-video

from The Free On-line Dictionary of Computing (8 July 2008)

S-Video

   <multimedia> A {video} format offering a higher quality signal
   than {composite video}, but a lower quality than {component
   video}.  This mid-level format divides the signal into two
   channels - {luminance} and {chrominance}.

   [Used where and for what?]

   (1998-06-25)