Displays images from multiple live cameras at the same time.
Displays images from up to 6 cameras at the same time.
It can be used if it supports Real Time Streaming Protocol (RTSP) .

Camera manufacturer and performance do not matter
You can use it if the camera supports onvif.

See below for onvif.
https://www.onvif.org/

Just enter the string that starts with "rtsp: //".
There is a description in the manual of the camera that supports onvif.

Please set all the servers you want to browse (up to 6).
After entering all the settings, select the screen for the number of cameras you want to display on the screen. The screen can display 2 to 6 servers.
Streaming reception starts automatically when the screen changes.

If streaming does not start, check if it can be received normally with other streaming reception software.
Depending on the performance of the streaming server, it may take some time to start streaming.
Streaming may be interrupted depending on the network load.