I need to mux a video signal that is all positive (0V to 2V).
It is possible use ADV3220 with supply 0/5V or we must use Dual supply and so -5V/5V?
The specifications for the ADV3220 are with +-5V rails.
It is also spec'd at 0-12V rails but the real problem here is the video signals would have to be AC coupled and biased to ~mid-point for proper operation. This is a more complex circuit.
The device is not spec'd with 0-5V rails.
It is best to keep the video signal DC coupled so the black level is 0V. And best to run the ADV3220 with +-5V rails.
If you need to generate 5V DC then you might look at devices like the LTC1983
Pay attention to the output ripple voltage and you should be good.