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What is the difference between CVBS, AHD, HD TVI, HD CVI camera connection?

HD CVI camera connection, along with the AHD and HD TVI, belongs to the latest HD CCTV, which is a new open standard for trait HD digital video over coaxial cable. HD CCTV doesn’t require changing the existing coaxial cable infrastructure and it is only a matter of replacing the camera and a security camera recorder. Camius TRiVault series security camera recorders support not only regular CVBS analog cameras but AHD, HD TVI, and HD CVI camera connection types.

  • CVBS stands for “Composite Video Blanking and Sync”. It is a conventional analog signal delivered through an analog  BNC connector. It also can be delivered through an RCA connector or other types (older cameras sometimes used a PL-259 connector). CVBS  signal can support max. 960H video resolution. 960H represents the number of horizontal pixels in a video signal transmitted from a camera or received by a security camera recorder DVR (Digital Video Recorder). 960H represent 960 x 576 (PAL) or 960 x 480 (NTSC) pixels, you can compare it with the lower D1 resolution providing 720 x 576 pixels (PAL), or 720 x 480 pixels (NTSC).
  • AHD stands for “Analog High Definition” and means an analog closed-circuit television video surveillance standard that uses a coax cable to transmit HD 720P and 1080P video from a security camera to a security camera recorder DVR (Digital Video Recorder).
  • HD-TVI means “High DefinitionTransport Video Interface”, it is an Analog CCTV standard transmitted over coax supporting HD 720P to 3MP Video signal in real-time. HDTVI can support long-distance video transmission reaching up to 500 meters.
  • HD-CVI (High Definition Composite Video Interface), an analog transmission standard-based over-coaxial-cable delivering two HD video formats: 1920H or called otherwise Full HD 1080P (1920×1080) & 1280H or called otherwise 720P (1280×720) through progressive scanning.
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