Videotape is a means of recording images and sound on to 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 heads would require extremely high tape speeds. Videotape is used in both video tape recorders or, more commonly, video cassette recorders and video cameras. Tape is a linear method of storing information.
The first consumer videocassette recorders were launched in 1971, but it was not until Sony's Betamax and JVC's VHS were launched that videotape moved into the mass market.
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