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Digital videotape recorder

A device that can store an electronic representation of moving visual images (video) in the form of encoded digital data.

A device that can store an electronic representation of moving visual images (video) in the form of encoded digital data. Digital video is an electronic representation of moving visual images (video) in the form of encoded digital data. This is in contrast to analog video, which represents moving visual images with analog signals. Digital video comprises a series of digital images displayed in rapid succession.

Digital video was first introduced commercially in 1986 with the Sony D1 format, which recorded an uncompressed standard definition component video signal in digital form. In addition to uncompressed formats, popular compressed digital video formats today include H.264 and MPEG-4. Modern interconnect standards for digital video include HDMI, DisplayPort, Digital Visual Interface (DVI) and serial digital interface (SDI).

Digital video can be copied with no degradation in quality. In contrast, when analog sources are copied, they experience generation loss. Digital video can be stored on digital media such as Blu-ray Disc, on computer data storage or streamed over the Internet to end-users who watch content on a desktop computer screen or a digital smart TV. In everyday practice, digital video content such as TV shows and movies also includes a digital audio soundtrack.

List of digital videotape formats:


Betacam SX, Betacam IMX, Digital Betacam, or DigiBeta — Commercial video systems by Sony, based on original Betamax technology

  • D-VHS — MPEG-2 format data recorded on a tape similar to S-VHS
  • D1, D2, D3, D5, D9 (also known as Digital-S) — various SMPTE commercial digital video standards
  • Digital8 — DV-format data recorded on Hi8-compatible cassettes; largely a consumer format
  • DV, MiniDV — used in most of today's video tape-based consumer camcorders; designed for high quality and easy editing; can also record high-definition data (HDV) in MPEG-2 format
  • DVCAM, DVCPRO — used in professional broadcast operations; similar to DV but generally considered more robust; though DV-compatible, these formats have better audio handling.
  • DVCPRO50, DVCPROHD support higher bandwidths as compared to Panasonic's DVCPRO.
  • HDCAM was introduced by Sony as a high-definition alternative to DigiBeta.
  • MicroMV — MPEG-2-format data recorded on a very small, matchbook-sized cassette; obsolete
  • ProHD — name used by JVC for its MPEG-2-based professional camcorders

Key Terms

contrast
device
digital video
digital videotape recorder
electronic representation
form encoded digital data
series digital images
video
visual images
visual images analog signals

Additional Resources

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Acronymn

DVTR

Synonymns

Digital videotape recorder
(none found)

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Sources & Credits

Last modified on February 17 2020
Content adapted from Wikipedia
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