We are in the UK , we’ve bought a common camera. The output screen is just a 4.7″ car display and we’re using the arduino nano v3. The problem is we have (what i think is) vsync issues. When I switch it to sync only mode the text appears fine , I’m guessing its because its getting its sync rate from pin D9 but then we move the jumper and put it into overlay mode we get some wired issues which are shown in the video below.
What code are you running? The examples that come with TVout (the rotating cube) will not work in overlay mode. You need to use a sketch that uses the special version of TVout that is for the Video Experimenter.