What is the difference between the imaging principle of photography and camera shooting?

Although the principle is the same, the camera shutter speed is low, and the continuous picture is not for you to observe carefully. But photography usually requires the shutter speed to be fast enough, otherwise what problems will be found when taking a photo for a long time. Think about it, the resolution of printed photos should be at least 2 million pixels of 1600* 1200, and the video resolution of 320*200 is basically acceptable, so people have different visual senses and different requirements.