Basically,I am doing a project involve in a camera board with a BNC connector.I wonder if its safe to connect the analog pin (of the camera board),to one of my arduino analog pin.The voltage is 1V.Also,I wonder if the analog pin support transferring video.Thanks.
Sure it's safe, but what is the point of doing it? It's not a digital signal, it's a composite analog signal. Google RS-170 video.
Paul
In PAL or NTSC a whole video line is about 64us long.
An analogRead takes about 100us.
What are you hoping for?
(The negative going elements of the waveform are unlikely to irretrievably damage your Arduino, but I advise level-shifting your signal)