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A videocassette recorder (VCR) or video recorder is an electromechanical device that records analog audio and analog video from broadcast television or other AV sources and can play back the recording after rewinding. The use of a VCR to record a television program to play back at a more convenient time is commonly referred to as time shifting.
The central concept of the system is a unique number, a PlusCode, assigned to each program, and published in television listings in newspapers and magazines (such as TV Guide). To record a program, the code number is taken from the newspaper and input into the video recorder, which would then record on the correct channel at the correct time.
Video Cassette Recording (VCR) is an early domestic analog recording format designed by Philips. It was the first successful consumer-level home videocassette recorder (VCR) system. Later variants included the VCR-LP and Super Video (SVR) formats. The VCR format was introduced in 1972, just after the Sony U-matic format in 1971. Although at ...
DV (from Digital Video) is a family of codecs and tape formats used for storing digital video, launched in 1995 by a consortium of video camera manufacturers led by Sony and Panasonic. It includes the recording or cassette formats DV, MiniDV, DVCAM, Digital8, HDV, DVCPro, DVCPro50 and DVCProHD. DV has been used primarily for video recording ...
Samsung SV-DVD440, a combo DVD player and VCR unit introduced to consumers in 2004. A VCR/DVD combination, VCR/DVD combo, or DVD/VCR combo, is a multiplex or converged device that allows the ability to watch both VHS tapes and DVDs. Many such players can also play additional formats such as CD and VCD.
Ampex's quadruplex magnetic tape video recording system has certain limitations, such as the lack of clean pause, or still-frame, capability, because when tape motion is stopped, only a single segment of the picture recording is present at the playback heads (only 16 lines of the picture in each segment), so it can only reproduce recognizable ...
Many are designed to record audio as well. DVRs have evolved into devices that are feature rich and provide services that exceed the simple recording of video images that was previously done through VCRs. A DVR CCTV system provides a multitude of advanced functions over VCR technology including video searches by event, time, date and camera.
A number of DVD recorders are also capable of recording to SVCD, VCD and Audio CD formats. Recording to DVDs can be done at different speeds that may take between 1 and 6 hours (even up to 8 hours on certain models) on a standard (single sided 12 cm) blank DVD. A trade off exists between recording time and video quality.