If your camera has video out, you should be able to get a cable to make the connection. My Sony has a miniature jack socket, my daughters Nikon uses the USB socket. You need to refer to the manual for your Fuji.
Sorry, I assumed that bit correctly, but I think you mean a digital signal from the camera. I'm referring to analogue sigals. Unless your camera has digital outputs, I don't think you will get an analogue to digital converter without spending a lot of money.