Hello all! I am using the Conexant Fusion 878a chip on a 4 input video capture card. I am trying to access the mux on the chip from Windows (XP) that changes the input feeds. I am able to acquire the images into Matlab from the first input on the card with no problems, but I can not access the other 3 inputs. I was told that I need to find the hook on the driver for the mux. Can anybody give me any help or advice? Thanks in advance!