Arduino composite video

Hi,
I have a signal from av input(from a cc camera) and i want to use arduino to somehow show that signal on the pc screen via usb connection from the arduino UNO.
For further pecification, this is my av line:

Thank you for your help.

No chance.

You could program the Arduino to detect the presence of a valid video signal, and display "signal" or "no signal" on the PC.

Buy a video input pc card or device. Plug into the pc. Skip the Arduino. It's utterly pointless.