Matrix switches, sometimes called crosspoint switches or crossbar switches, are a special category of switches that allow many different inputs to be routed independently to any of a number of outputs. Each input can go to one output or be split to multiple outputs simultaneously.
Video matrix switches, as the name implies, switch video signals between several sources (such as cameras, computers, DVD players, and cable boxes) and displays (monitors, TVs, or projectors). This type of switch is used almost anywhere multiple video feeds are shown