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The Analog Protection System (APS), also known as Analog Copy Protection (ACP), Copyguard or Macrovision, [ 1] is a VHS [ 2] and DVD copy protection system originally developed by the Macrovision Corporation. Video tapes copied from DVDs encoded with APS become garbled and unwatchable. The process works by adding pulses to analog video signals ...
A VCR/Blu-ray combo is a multiplex or converged device, convenient for consumers who wish to use both VHS tapes and the newer high-definition Blu-ray Disc technology. [1]When Blu-ray Disc players went on the market in mid-2006, the final major Hollywood motion picture on VHS (David Cronenberg's A History of Violence) had already been released. [2]
^ g DVD supports any valid MPEG-2 refresh rate as long as it is packaged with metadata converting it to 576i50 or 480i60, This metadata takes the form of REPEAT_FIRST_FIELD instructions embedded in the MPEG-2 stream itself, and is a part of the MPEG-2 standard. HD DVD is the only high-def disc format that can decode 1080p25 while Blu-ray and HD ...
The Blu-ray/HD DVD conflict resembled the earlier videotape format war between VHS and Betamax, partly because of Sony's strong involvement in both episodes. These format wars have often proved destructive to both camps because consumers, afraid of committing to a losing standard, would refrain from purchasing either. [3]
Time base correction (TBC) is a technique to reduce or eliminate errors caused by mechanical instability present in analog recordings on mechanical media. Without time base correction, a signal from a videotape recorder (VTR) or videocassette recorder (VCR), cannot be mixed with other, more time-stable devices such as character generators and video cameras found in television studios and post ...
"VCR"-format cassettes in case (left) and on own (right). A full-size CD is shown for scale. Size comparison between a Betamax cassette (top) and a VHS cassette (bottom) The videotape format war was a period of competition or "format war" of incompatible models of consumer-level analog video videocassette and video cassette recorders (VCR) in the late 1970s and the 1980s, mainly involving the ...
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