[HDVR-430/830/1630(v2)] What should I do if red “X” appears in live view of local user interface?

When the current resolution of the channel is over the limit, the system will show red “X” on the screen. Firstly, please adjust video settings of the camera with H.264 compression, 1280 x 720 resolutions, 30fps, constant bit rate (CBR) and 2048kbps for main-stream. Next, confirm sub-stream of the camera is enabled. The video settings with H.264 compression, 640 x 480 resolutions, 30fps, CBR and 1024kbps for sub-stream are recommended.