The Evolving HDcctv Specifications


HDcctv DT 2.0 and HDCVI 2.0 are Current

20 October 2014

HDcctv equipment is just as reliable, as convenient, and as cost-effective as sub-HD CCTV equipment. As a result, the mainstream security market is now migrating to HD surveillance. The worldwide retail market value of HDcctv equipment surpassed US$1B in 2013, and 2014 is on track to be much larger than that.


HDcctv Standard Roadmap

HDcctv Standards Roadmap


HDcctv 1.0 and HD-SDI

HDcctv 1.0 was ratified in 2009. HDcctv 1.0 is based on SMPTE 292M (HD-SDI), with the addition of rigorous compliance testing. Certified HDcctv-compliant products deliver 100% multi-vendor plug 'n' play interoperability. Not all HD-SDI cameras are certified HDcctv compliant, and non-certified products have been known to disappoint; savvy buyers know to look for the HDcctv compliance mark to be sure.

 HDcctv Base Logo

Second-Generation HDcctv Standards

HDCVI 2.0 (Analogue Transmission) and HDcctv DT 2.0 (Digital Transmission) were ratified in February 2014. Both second-generation HDcctv standards provide for up-the-cable remote control. Each 2.0 camera is a Slave, sending video to a channel that includes exactly one Master (a 2.0 DVR, matrix, IP encoder, monitor, etc) and any number of Observers. The remote control is 100% multi-vendor plug 'n' play, and the Master-Slave link is established automatically at power-up. Both variants share a common Master-Slave protocol, in order to simplify system integration.



HDcctv DT 2.0 ("DT" derives from "Digital Transmission")

HDcctv DT 2.0TM adds plug 'n' play remote control to the underlying HD-SDI-style transmission.

DT 2.0 TM

HDcctv DT 2.0 products are fully backward-compatible with HDcctv 1.0 products. HDcctv DT 2.0 transmits bit-perfect HDTV signals over the same cable distances as HDcctv 1.0.

 The following chart shows the differences and similarities among HDcctv DT 2.0, HDcctv 1.0, and HD-SDI.

DT Comparison

HDCVI 2.0 (Analogue Transmission)

HDCVI 2.0TM transmits uncompressed HDTV signals over any conventional CCTV cable, using the common HDcctv 2.0 up-the-coax remote-control protocol.

HDCVI 2.0 circle-r

HDCVI 2.0 is a refinement of HDCVI (High Definition Composite Video Interface) technology, introduced by Zhejiang Dahua Technology Co., Ltd., in 2013.

 The following chart shows the differences and similarities among HDcctv DT 2.0, HDcctv 1.0, and HD-SDI.

AT Comparison

Guide to Transmission Distance for Installers & Integrators

The following table shows a summary of the performance to be expected from any given cable for any of the HDcctv transmission solutions:

Cable Table

Future HDcctv Standards

Future versions of the HDcctv standards will build on the 2.0 transmission technologies, as well as potentially adding transmission solutions for even more media:

  • Power up the cable
  • Fibre optics: 10km, 30km, 50km laser classes
  • Wireless transmission: ~ 50m
  • Unshielded twisted pair transmission
  • Audio
  • Higher resolutions: 4K (8 megapixels), 8K (30 megapixels) and beyond, as sensors, codecs, HDDs, networks, and monitors accommodate
  • Higher frame rates: 720p240 and higher, for high-speed applications such as traffic monitoring

The contents of the HDcctv standard, and the timing of new versions of the standard, are determined collectively by HDcctv Alliance Members.