The Blackmagic Design MultiView 4 HD is a switcher that allows you to view up to four different SDI video sources on a single display. It features four SD/HD/3G-SDI inputs and two outputs, one SDI and one HDMI. The switcher automatically detects the input signal format and re-clocks it to the output. It also features an audio de-embedder and an audio embedder. The MultiView 4 HD is compatible with PC, laptop, and Mac systems.