HD-TVI (High Definition Transport Video Interface), AHD (Analog High Definition), and HD-CVI (High Definition Composite Video Interface) are all high-definition video surveillance technologies that enable analog cameras to transmit high-quality video over coaxial cables. These technologies were developed as alternatives to traditional analog CCTV systems, offering improved resolution and image quality. Here are the key differences among them:

Maximum Resolution
HD-TVI: Supports resolutions up to 1080p (1920x1080).
AHD: Supports resolutions up to 1080p (1920x1080), and some variants even support higher resolutions.
HD-CVI: Supports resolutions up to 1080p (1920x1080), with certain variants supporting higher resolutions.

Transmission Distance
HD-TVI, AHD, and HD-CVI all support longer transmission distances over coaxial cable compared to traditional analog systems. However, the exact distances can vary depending on cable quality and other factors.

Signal Quality
All three technologies offer improved signal quality and higher resolution compared to traditional analog CCTV systems.

Backward Compatibility
HD-TVI, AHD, and HD-CVI DVRs often maintain backward compatibility with lower-resolution analog cameras, facilitating gradual system upgrades.

Interoperability and Compatibility
HD-TVI, AHD, and HD-CVI systems are generally not compatible with each other due to their use of different proprietary technologies. However, many manufacturers provide all three systems, along with 960H and CVBS, in their cameras, DVRs, monitors, converters, and other equipment.

See our prices for HD-TVI / AHD / HD-CVI equipment.