Capacitance Electronic Disc
The Capacitance Electronic Disc (CED) is an analog video disc playback system developed by Radio Corporation of America (RCA), in which video and audio could be played back on a TV set using a special stylus and high-density groove system similar to phonograph records.
A CED of Close Encounters of the Third Kind (1977), exposed from its protective caddy
Exposed CED disc
Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media. Video was first developed for mechanical television systems, which were quickly replaced by cathode-ray tube (CRT) systems, which, in turn, were replaced by flat-panel displays of several types.
Composite video (single channel RCA)
S-Video (2-channel YC)
Component video (3-channel YPbPr)
SCART