A video switch is a device used to select and control multiple video sources, allowing users to switch between them seamlessly. It is commonly used in live events, broadcasting, and video production to manage different cameras, graphics, and other video inputs. By using a video switch, operators can create a polished final output for audiences. Video switches come in various types, including analog and digital models, each suited for different applications. They often feature buttons or a control panel for easy operation, and some advanced models include video effects and transitions to enhance the viewing experience.