what is resistive like a Ω in ADC pin's like a A0,A1,A2...
Essentially in the Megohms as resistance goes, but with significant capacitive load.
sc20ka:
2. did some have library with ready capture and convert PAL analog signal in ADC in Arduino
I'm sorry, you seem to be greatly confused and befuddled.
This is an Arduino forum. You would appear to be interested in video processing hardware. I don't know of any such forum or how you would find it. It clearly has nothing whatsoever to do with Arduinox however.