Since the HDCVI signal uses a dedicated transmitting chip and receiving chip, the AV interface of the usual display does not support access and needs to be decoded. The signal display of HDCVI cameras on the market is realized by Dahua’s HDCVI hard disk recorder. There are currently 4 channels and 8 channels, and the price is 400 yuan and 800 yuan. The HDCVI matrix on the market cannot be regarded as a true HDCVI matrix. According to the understanding, there are two matrixes that use an HDCVI switcher, and then add the HDCVI DVR as a decoder to display.