music video, videotaped performance of a recorded popular song, usually accompanied by dance or a fragmentary story and sometimes employing concert footage. Typically three to five minutes long, music videos frequently include quick cuts, stylizations, fanciful and often erotic imagery, and computer graphics. Originally vehicles for promoting singles, most music videos are in the rock idiom. Although many examples of the genre feature the macho rock stars and scantily clad dancers that have become cultural clichés, certain music videos are notable for their cutting-edge techniques and artistic innovations, and some of their directors have achieved auteur status.

The music video form was popularized by the MTV cable network (est. 1981) and began to have wide popularity and influence in the early 1980s. By the 1990s many hundreds of videos, representing a cross-section of musical forms—from traditional to experimental rock, heavy metal to hip hop—were being produced yearly. Although music videos have usually been aimed at a teenage audience, many videos of ballads or "soft rock" songs are now directed at an older group of viewers. Since shortly after their inception, the style and content of music videos have strongly influenced advertising, television, film, and popular culture as a whole.

Rigid circular plate of either metal or plastic used to record video and audio signals for playback. It resembles a phonograph record and can be played on a machine attached to a conventional television receiver. There are two major classes of videodiscs, magnetic and nonmagnetic. Magnetic videodiscs have an oxide-coated surface onto which input signals are recorded as magnetic patterns in spiral tracks. Nonmagnetic videodiscs use either a mechanical recording system analogous to that used in phonograph records, or optical technology that uses a laser to read data coded as a sequence of pits on the disc. The most common type of videodisc today is the DVD.

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in full videocassette recorder

Electromechanical device that records, stores on a videotape cassette, and plays back on a TV set recorded images and sound. The first commercial VCRs were marketed by Sony Corp. in 1969. VCRs are used to record broadcast TV programs for later viewing and to play commercially recorded cassettes. They have from two to seven tape heads that read and inscribe video and audio tracks on magnetic tape. Home movies can be made with a camcorder system, a VCR connected to a simple video camera.

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