HDCVI Cameras or HD-SDI Cameras are getting more and more popular these days as they are replacing traditional analogue HD-SDI stands for HD-Serial Digital Interface, which is derived from HDCVI&SDI foundation technology, developed for the professional HDTV market and widely deployed and defined as an international standard protocol. HDCVI&HDSDI transmission is the best way to deliver a lossless HD quality image for CCTV applications.