Which device is typically used to switch between multiple video inputs in an AV system?

A matrix switcher is the device typically used to switch between multiple video inputs in an AV system. This device allows for the routing of video signals from several sources, such as cameras, projectors, and media players, to one or more output destinations, such as displays or projectors. The flexibility of matrix switchers is a significant advantage, enabling users to choose which sources are sent to specific displays without requiring physical reconnections of cables.

The versatility of a matrix switcher also supports multiple formats and resolutions, managing various content sources simultaneously, allowing seamless transitions between inputs. This capability is essential in setups where different presentations, video feeds, or media types are used interchangeably, making it a critical component in advanced AV systems.

While other devices such as video wall processors, signal amplifiers, and control processors serve essential functions within an AV system, they do not fulfill the primary role of selecting and routing multiple video inputs to outputs as effectively as a matrix switcher. Video wall processors focus on managing content across large display arrays, signal amplifiers boost signal strength for long-distance transmission, and control processors are responsible for automating and managing device commands rather than switching video sources.