hi, there is a dvr card called HIKVISION, it is a Hybird dvr, and you can connect a hikvision matrix card, your will get 4ch output from the matrix card, and from the software you can decide which camera channels to display on the outputs of the matrix card.
on the matrix card you can set for rotation or single, quad view,6,9,16,24,33. its your choice
regrds
Mohamed