Video

Video generally refers to various technologies that capture, record, process, store, transmit and reproduce a series of still images in the form of electrical signals. When the continuous image changes more than 24 frames per second, the human eye cannot distinguish a single static picture according to the principle of visual persistence; It looks like a smooth and continuous visual effect. Such a continuous picture is called video. Video technology was first developed for TV system, but now it has been developed into various formats to facilitate consumers to record video. With the development of network technology, video recording clips exist on the Internet in the form of streaming media, and can be received and played by computers. Video and film belong to different technologies. The latter uses photography to capture dynamic images into a series of static photos.