To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
Show all languages
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.

Video Single Disc

From Wikipedia, the free encyclopedia

Video Single Disc (VSD)
Media typeOptical disc
CapacityUp to 800 MB
Read mechanism780 nm wavelength semiconductor laser
Developed bySony
DimensionsDiameter 120 mm (4​34 in)
Thickness 1.2 mm (​121 inch)
UsageHome video, video storage
Extended fromLaserDisc, CDV

Video Single Disc (VSD) is a disc-based format that carried the same analog video information as a LaserDisc, but on a 12-centimetre (4.75 inch) diameter CD-DA-sized disc. It was spearheaded by Sony and was released in Japan in 1990.[2][3] It was a new variety of laserdisc and variation on the CD Video (CD-V) format, except that VSD disc carried only video. The disc is the same size as a standard CD and holds five minutes of video with digital sound.[4][5] It did not have any additional audio tracks like CD-V. Like CD-V, VSD discs could be played back by multi-disc or LaserDisc players that had VSD playback capability.[6]


Upon release, the Video Single Disc was seen as a possible replacement for the failing “CD Video” format, which had confused the public with its combination of five minutes of video and 20 minutes of audio.[7]


In Japan the VSD was listed at around US$8 which was half the price of the (US$16) CD Video.[8]


VSDs were 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 disc to accompany early pressings of the Terminator 2: Judgment Day movie when it was released on LaserDisc in 1991.

See also


  1. ^ Video Magazine - Volume 14, Issue 8 - Page 17
  2. ^ Weekly Television Digest, with Consumer Electronics - 1990 “New laserdisc format — Video Single Disc (VSD) — is due in Japan next month. The 4.75" disc is same size as standard CD, but carries 5 min. of video and audio”.
  3. ^ Weekly Television Digest, with Consumer Electronics - Google books
  4. ^ Video Magazine - Volume 14, Issue 8 - Page 17
  5. ^ Video Magazine - Volume 14, Issue 8 - Page 17. “A new variety of laserdisc called the video single disc (VSD) has hit the Japanese market. Intended for use in combi players, the five-inch CD-sized discs hold five minutes of video with digital sound, and list for about $8 in Japan. Though plans for its U.S. introduction have not been announced, VSD is seen as a possible replacement for the failing CD-Video format, which has confused the public with its odd combination of five minutes of video and 20 of audio”.
  6. ^ Telecommunications update - Volume 6 - Page 27 - “A new laserdisc format — video single disc (VSD) - is due in Japan. The 4.75 inch disc is the size of a standard CD, but carries five minutes of video and audio so it can be played in a multidisc player”.
  7. ^ Video Magazine - Volume 14, Issue 8 - Page 17 - “A new variety of laserdisc called the video single disc (VSD) has hit the Japanese market“.
  8. ^ Telecommunications update - Volume 6 - Page 27 “It differs from the failed CD-Video in the amount of audio (the latter had 20 minutes of audio and five minutes of video) and in price (in Japan it will cost half as much as CDV, or about $8 list vs. $16)”.

External links

This page was last edited on 17 April 2020, at 21:08
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.