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D-VHS is a digital video recording format developed by JVC, in collaboration with Hitachi, ... Another alternative is a lengthy transfer to a computer for viewing ...
Video capture is the process of converting an analog video signal—such as that produced by a video camera, DVD player, or television tuner—to digital video and sending it to local storage or to external circuitry. The resulting digital data are referred to as a digital video stream, or more often, simply video stream.
Internet Archive book scanner. Digitization [1] is the process of converting information into a digital (i.e. computer-readable) format. [2] The result is the representation of an object, image, sound, document, or signal (usually an analog signal) obtained by generating a series of numbers that describe a discrete set of points or samples. [3]
These modes are comparable to those found on VHS VCRs using standard 120-tapes, having SP, LP, SLP modes of 2, 4, 6 hour. The United States converted its over-the-air television broadcasts to digital "ATSC" in June 2009. This will have a limited impact in ending the need for DVD recorders to perform realtime MPEG-2 encoding or transcoding.
The other improved standard, called Digital-VHS (D-VHS), records digital high definition video onto a VHS form factor tape. D-VHS can record up to 4 hours of ATSC digital television in 720p or 1080i formats using the fastest record mode (equivalent to VHS-SP), and up to 49 hours of lower-definition video at slower speeds. [66]
Another form of analog copy protection, known as CGMS-A, is added by DVD players and digital cable/satellite boxes. While not invented by Macrovision, the company's products implemented it. CGMS-A consists of a "flag" within the vertical blanking interval (essentially data, like closed captioning) which digital recording devices search for.
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