Is This Pin-Out for S-Video or Composite Video? I have never seen a pin out utilizing video- and video+ before. My first assumption would be that it's for analog video transmission, probably composite video.

Pin Function


Video-  
Video+  
74 VDC  
AUX+
Ground
AUX-
RS-485 -/A
RS-485 +/B
I don't recognize this connector, but I can say that your assumption is incorrect. Video+/- isn't "two cables", it's just a way of notating the two wires (like say, signal and ground) needed for a complete circuit. The same is true for the AUX and RS485 circuits.