Video Single Disc
Encyclopedia
Video Single Disc was a disc-based format that carried the same analog video information as a laserdisc
Laserdisc
LaserDisc was a home video format and the first commercial optical disc storage medium. Initially licensed, sold, and marketed as MCA DiscoVision in North America in 1978, the technology was previously referred to interally as Optical Videodisc System, Reflective Optical Videodisc, Laser Optical...

, but on a 12-centimetre (4.72 inch) diameter CD-DA-sized disc. It was a variation on the CD Video
CD Video
CD Video was a format introduced in 1987 that combined the technologies of compact disc and laserdisc. CD-V discs were the same size as a standard 12 cm audio CD, and contained up to 20 minutes worth of audio information that could be played on any audio CD player...

 (CD-V) format, except VSD disc carried only video. It did not have any additional audio
Red Book (audio CD standard)
Red Book is the standard for audio CDs . It is named after one of the Rainbow Books, a series of books that contain the technical specifications for all CD and CD-ROM formats.The first edition of the Red Book was released in 1980 by Philips and Sony; it was adopted by the Digital Audio Disc...

 tracks like CD-V. Like CD-V, VSD discs could be played back by laserdisc players that had VSD playback capability.

VSD was popular only in Japan and other parts of Asia, and was never marketed or introduced elsewhere in the world, but the format did get used once in the United States for a promotional movie Teaser and Trailer disk to accompany early pressings of the Terminator 2 movie when it was released on Laserdisc in 1991.
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