For years I have been trying to make my Tuxedo Touch Security panel find and use
my video cans.
But No Joy!

I recently abandoned the old Swann NRV and replaced it, and it's cams, with a 
Mini PC running zoneminder and Reolink cams. 

I wanted to be able to see visitors at the front or rear door, I needed a small 
display in the entryway area.
I decided to use a 15" HD LCD running Ubuntu on a Mini PC.