Haikang camera osd does not support the national standard protocol. When connecting to the national standard protocol, it is recommended to use the LiveNVR national standard cascade solution. First connect the device to LiveNVR through RTSP or ONVIF protocol, and then configure the LiveNVR cascade national standard Platform. LiveNVR supports TCP streaming mode to achieve stable playback effects. You can also use the national standard hard disk video recorder hardware solution, first connect the device to the hard disk video recorder that supports the national standard protocol, and then configure the cascade national standard platform.