High Definition Composite Video Interface (HDCVI) is a standard in the CCTV and security camera industry, which is one of recent technologies for offering high definition solution to analog surveillance system (CCTV). HDCVI is a video transmission technology in high definition via coaxial cable, allowing reliable long-distance HD transmission at lower cost, while complex deployment is applicable.

As the HDCVI technology inventor and patent owner, Dahua has made it as a global open standard, providing open access for any third party, including competing manufacturers, to use HDCVI.