Media Format

DVD (also known as "Digital Versatile Disc" - see Etymology) is a popular optical disc storage media format. Its main uses are video and data storage. Most DVDs are of the same dimensions as compact discs (CD) but store more than six times as much data. Variations...

Videotape is a means of recording images and sound onto magnetic tape as opposed to movie film. In most cases, a helical scan video head rotates against the moving tape to record the data in two dimensions, because video signals have a very high bandwidth, and static...

Laserdisc (LD), previously known Laser Videodisc, Laservision and Discovision was the first commercially available optical disc storage medium. The format offered large storage capacity, but its use as a backup medium was limited; the technology was used primarily as a...