An Essential Tool for Multi-Cam Live Video Production
A Video Switcher (aka. Vision Mixer, Production Switcher) is an essential tool for multi-camera live video production setups. Traditional hardware-based video switchers would contain a program bus and preview bus (or A/B bus) with button selectors, a transition bar or T-Bar, and a key bus for background keying over the program, all of which form the basic mixer section. Larger or more sophisticated switchers would have a Mix/Effects (M/E) section allowing further effects and enhancements to be added to the program output.