A vision mixer (also called video switcher,video mixer or production switcher) is a device used to select between several different video sources and in some cases compositing (mix) video sources together to create special effects. This is similar to what a mixing console does for audio.
Also called a vision mixer, a video switcher is a hardware deviceused in video and film production or broadcasting an ddisplays to switch between different video or audio sources. This allows the producer to mix video and also add in special effects or footage captured on a secondary source.
