Videodisc is a general term for a laser- or stylus-readable random-access disc that contains both audio and analog video signals recorded in an analog form. Typically, it is a reference to any such media that predates the mainstream popularity of the DVD format. The first mainstream official Videodisc was the Television Electronic Disc (TED) Videodisc, and the newest is the 4K Ultra HD Blu-Ray Disc. As of September 2023, the active video disc formats are Blu-ray Disc, DVD, and in other regions because of the price difference from DVD, Video CD (VCD) and SVCD.
Videodisc and VHS Cassette
The LaserDisc (LD) is a home video format and the first commercial optical disc storage medium, initially licensed, sold and marketed as MCA DiscoVision in the United States in 1978. Its diameter typically spans 30 cm (12 in). Unlike most optical-disc standards, LaserDisc is not fully digital, and instead requires the use of analog video signals.
A LaserDisc held
Used LaserDiscs for sale at a used book store in 2023. The used Laserdisc market as of 2020[update] remains supported by a "loyal following" of "thousands". In front is the release of Aladdin and the King of Thieves and the warning notice as the discs are not like vinyl records.
Constant Angular Velocity LaserDisc showing the NTSC field setup and individual scanlines. Each rotation has two such regions.
A top-loading, Magnavox-brand LaserDisc player with the lid open
![Used LaserDiscs for sale at a used book store in 2023. The used Laserdisc market as of 2020[update] remains supported by a "loyal following" of "thous](https://upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Used_laserdiscs_2023.jpg/600px-Used_laserdiscs_2023.jpg)
