How do movie cameras and display screens display pictures wirelessly?

This question is a bit difficult. The picture of TV and projector is 25 frames per second, which means there are 25 pictures per second. So your shutter speed should be between 1/25- 1/30 seconds. Knowing this, you will know what to do, that is, the shutter speed of the camera should be synchronized with the picture of the TV projector. It is difficult because the shutter of a general household camera is not manually controlled. Maybe some good cameras have manual aperture control, that's fine, and the shutter speed is indirectly controlled by controlling the aperture. Try more, maybe it will work.