Wiring Info
Here we go.
From the FPV transmitter you are working with the ground (black) and the video (yellow)
If you opt to not power the camera from the transmitter you could even change the wire colours to green and white.
I tend to remove all unused wires.
The video USB cable used the video + (white) and the video - (green)
So for the video feed you want to connect the white and yellow wires.
And for ground the black and green.
Finally select TV out.
Hope this helps.
Andre.