Check the listing for details. Blackmagic Design ATEM 2 M/E Constellation HD Professional Video Switcher. Condition: New. Listed at 1865.00 USD. Comprehensive 20-in/12-out Video Mixer Looking to punch up your content with video switching, controls, effects, and audio tools all in one box? The Blackmagic Design ATEM 2 M/E Constellation HD is a comprehensive multimedia switcher. It makes quick work of organizing broadcasts and streams via BMD’s proven ATEM platform. This 20-in/12-out video mixer packs a spread of connectivity options. There's 20 3G-SDI inputs with automatic standard conversion, 12 3G-SDI outputs, USB connectivity, audio mix controls, streaming via Ethernet or USB, and much more. Beyond video, the ATEM 2 M/E Constellation HD is primed for multimedia work with green screen and picture-on-picture composition tools, plus a 48-channel Fairlight audio mixer with effects.