I dabbled a bit with the 4 player splitter by valdarko:
Now I want to do this with Paster since it seems it's the way to go, right?
What I need to do, is switch the cameras from the example, to this:
I already did in valdarko's example by modifying this:
Though I cannot set the resolution I want (1280 X 720), it's always broken.
For now, I'm trying to "port" this to Paster, though I barely have any idea of what I will be doing, so any help with be very, very much appreciated.