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Please note that in order to achieve megapixel definition monitoring (720P), the AHD cameras also need to work with AHD DVR. Hit a nutshell, AHD and HD-CVI are very similar. Compared with HD-CVI, it has advantages of great compatibility. Since the AHD cameras can be backward compatible with all traditional analog equipment. It seems, the HD-AHD cameras support 960H output mode, which is very convenient for test and installation. For video live view/recording/playback, HD-CVI cameras need to work with HD-CVI DVR. HD-CVI camera connects to traditional CRT, it doesn't show images. In addition to the difference of solution, the price vary greatly, OV9712 + NVP2431 of AHD camera module only costs US$6.5, and PO3100K + DH9801 camera module costs approximate US$10.Īdditionally, AHD camera can connect to CRT display directly, the image can display properly. The main difference: 1.0 megapixel AHD camera adopts OV9712 + NVP2431H solution, while HD-CVI camera adopts the PO3100K + DH9801 solution. Today, we are going to discuss the difference between HD-CVI cameras and HD-AHD cameras. We have already written some articles to introduce each of these technologies, and the difference between them. Compared with HD-SDI, the cameras based on other three technologies are very competitive. HD-SDI cameras and HD-SDI DVR are the most expensive HD analog equipment among them, which is the main reason HD-SDI technology doesn't widely used in HD analog surveillance system. All of them can deliver 720P/1080P high definition images, and transmitting the video over traditional coaxial cable. More and more security camera manufacturers launch new high definition analog solutions, which are, HD-SDI, HD-CVI, HD-TVI, and now HD-AHD. Since the popularity of CMOS image sensor, the traditional analog video surveillance is undergoing tremendous transformation.