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Video was originally exclusively live technology. Live video cameras used an electron beam, which would scan a photoconductive plate with the desired image and produce a voltage signal proportional to the brightness in each part of the image. The signal could then be sent to televisions, where another beam would receive and display the image. [4]
Digital video is an electronic representation of moving visual images in the form of encoded digital data. This is in contrast to analog video, which represents moving visual images in the form of analog signals. Digital video comprises a series of digital images displayed in rapid succession, usually at 24, 25, 30, or 60 frames per second ...
This category comprises articles pertaining to the technology used to produce video programming and films. For articles pertaining to the broadcast transmission of television or video signals, see the broadcast engineering category.
MPEG-2 video format and Dolby Digital or Digital Theatre System (DTS) audio format stored on a DVD: 2003 DualDisc: One side DVD, one side CD - It's the DualDisc Digital. Multiple formats encoded onto the same disc 2005 HD DVD: An HD DVD Digital. Uses VC-1, H.264/MPEG-4 AVC, or H.262/MPEG-2 Part 2 video formats and Dolby TrueHD, DTS-HD Master ...
The range of signal frequencies that a piece of audio or video equipment can encode or decode; the difference between the limiting frequencies of a continuous frequency band. Video uses higher frequency than audio, thus requires a wider bandwidth. [2] Bar Test Pattern Special test pattern for adjusting color TV receivers or color encoders.
Video production is the process of producing video content. It is the equivalent of filmmaking , but with video recorded either as analog signals on videotape , digitally in video tape or as computer files stored on optical discs, hard drives, SSDs, magnetic tape or memory cards instead of film stock .