I want to switch between 2 video sources (cameras) to a common video receiver. Is general purpose optocoupler suitable for that?
In more details, the video switch is controlled by a 3.3v MCU. It will select input video source before turning on the video receiver, so there will be no question regarding video synchronization. The cameras are of standard composite NTSC video type, have 12V power supply and 2 video wires (plus and minus, where minus is actually the common ground).
So, the question is if optocouplers work well passing analog signal.