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The different CCTV Formats

TVI vs. Analog/SDI/CVI/IP

HD-TVI means High Definition Transport Video Interface, HD-TVI is High Definition through traditional coaxial cable for video audio and data transmission which support 960H/720P/1080P signals simultaneously along with data (ptz control) and audio for TVI cameras with directly interfaced microphones. Tri-Bryd technology makes TVI DVR's work with traditional analog cameras, 720p/1080p TVI cameras, and IP cameras, with our top of the line TVI DVR boasting 16 tvi/analog fully universal bnc connections and 2 networkable IP camera slots, all at 1080P 30fps maximum resolution.

Background Study

At time/date of this article (USA), there are approximately 100 million coaxial cable runs deployed for analog closed circuit television systems. In the next 3-5 years, they will be replaced with high definition cameras, either over coax or UTP. However, some users were worried about expensive upgrade costs with the shift to a new camera and DVR technology, such as the enormously high price of SDI, but TVI is being made very affordable, very much comparable to the price of traditional analog systems. Along side the price drop while still holding 1080P resolution, the TVI DVR's work with analog cameras and IP cameras and the TVI cameras will work on traditional analog DVR's. The resolution you get is limited to the weakest link, until you get all tvi cameras and a tvi dvr. This means you can upgrade the DVR and then one camera at a time to spread out costs if need be.

HD-TVI Advantages

Among current HD solutions, the distance of transmission, compatibility and cost have always been a problem for both manufacturers, installers, and end-users. In this context, HD-TVI technology as a brand new analog HD solution emerges in the market with great support and potential. Overall, the HD-TVI technology can provide a more economical, easier to install and use solution for high definition analog surveillance system over coaxial cable.

The HD-TVI can convert digital signal to analog signals for expanding its transmission distance, lowering total cost, and reducing total video storage space. Through coaxial cable, the video transmission distance can reach up to 300~500 meters without obvious video quality loss. In addition, the HD-TVI can transmit CVBS 75Ohm analog video signals with resolution of 720P and 1080P at 30fps, which are difficult tasks to adopt with other HD coaxial solutions. Merely replacing the existing analog camera and DVR with the latest HD-TVI cameras and DVR allows users to upgrade their surveillance system to a brand new 720P and/or 1080P HD system which doesn't require any extra installation knowledge or cost.

  • Analog HD high video quality 720P/1080P resolution
  • Transmit video, audio, and data signals over coaxial cable
  • No quality loss or delay for HD video transmission
  • Impressive long distance transmission capability
  • Easy to upgrade your existing analog system to HD system

HD-TVI vs Analog

HD-TVI vs Analo

In summary, the advantage of HD-TVI compared with Analogue is:

  • HD resolution on 720P/1080P at 25/30fps (pal/ntsc)
  • Long distance transmission for HD video
  • No video quality loss and delay for transmission



Obviously, HD-TVI and HD-CVI have very similar features, both of them can provide analog high definition solutions. HD-TVI is derived from an American based company that does not supply to only one manufacturer. Therefore we are expecting that many analog camera manufacturers will release a wide range of HD-TVI based cameras to market.

Therefore, HD-TVI is more likely to become an industry standard, not a proprietary technology/solution.



In conclusion, comparing TVI with HD-SDI:

  • Longer video transmission distance up to 1000ft (300m) over regular coaxial cable
  • 700ft (200m) distance for video transmission over UTP (Cat5, twisted cable)
  • Much cheaper price for an analog HD system
  • Support twisted cable installation

HD-TVI vs IP Camera

HD-TVI vs IP Camera

Hence, compared with IPC, the advantages of HD-TVI are

  • No network bandwidth requirement/influence
  • No network configuration, as easy as analog system
  • No video quality loss and compression
  • No video latency issue, real time live-view
  • Long video transmission distance
  • More affordable price for camera and video storage devices

Page last updated 23/04/2017