currently, IP will be main stream, lots of ip cameras will be new installed, also we can not ignore previous cctv system, e.g. BNC cameras, DVR recording system, lots of computer desktop also need to display on Video wall, so, there is a big question, how can display all these video resources to Video wall? possible?

Yes, absolutely.

Pearmain offer ip matrix,plus video encoder, to program and integrate these signal to display on video wall. 

Operation is simple like analog system.