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Macrovision is a company that creates electronic copy prevention schemes, established in 1983. The name is also sometimes used to refer to certain video copy prevention schemes developed by that company.

History

Macrovision Corporation was established in 1983. The 1984 film "The Cotton Club" was the first videocassette to be encoded with the Macrovision technology when it was released in 1985. By the end of the 1980s, most major Hollywood studios were utilizing the Macrovision technology. With your software not only can you copy & burn ANY DVD, you'll also be able to transfer all your VHS tapes to DVD format on CD using CDR! DVD Copying Features. The technology was extended to DVD players when they were first launched in 1997.

Macrovision for video

A VHS videotape or DVD (no laserdisc or video CD players implement it) or digital cable/satellite boxes receiving a data stream encoded with Macrovision will cause a VCR set to record it to fail (excluding very old models, modified VCRs, or those approved for "professional usage"). This is usually visible as a scrambled picture as if the tracking were incorrect, or the picture will fade between overly light and dark.

This is achieved through a signal implanted within the offscreen range (vertical blanking interval) of the video signal—either physically recorded directly on the tape (as with VHS) or created on playback by a chip in the player (as with DVDs) or the digital cable/satellite box (as with all HDTV programs being down-converted to standard definition).