Are you sure you didn't get the wires mixed up? I believe the center pin goes to your video source, and the outside ring goes to ground. Try switching the wires around, in case you did have them backwards.
I soldered the center wires to the video out. There is a sheath that surrounds those center wires and then a bunch of other wires that surrounds that. I didnt connect those wires to anything, but youre saying those wires should be connected to ground? I'll give that a try but shouldn't I have gotten some sort of signal even without connecting ground?