The Blackmagic Design ATEM 2 M/E Production Studio 4K from Blackmagic Design is a live event multi camera production switcher with 20 video inputs built into a 2RU chassis. Supporting NTSC/PAL/HD and Ultra HD 4K (3840?2160) video formats, the switcher connects to a wide range of cameras and sources, delivering a single program stream in SD, HD, or Ultra HD video. All this is done live and in real time with no rendering required. The switcher features a reference video input for synchronizing the switcher to other equipment using tri-level or blackburst sync. Each input also features its own frame synchronizer, which allows you to use cameras that do not feature Genlock as well as input video from computer sources.