The ATEM 4 M/E Constellation HD Live Production Switcher (2 RU) delivers powerful live-event HD switching from up to 40 individual 3G-/HD-SDI inputs in a 2RU chassis. It supports both 3G-SDI and HD-SDI signals across a wide range of cameras and sources, delivering programme output via 24 3G-SDI BNC outputs or a webcam output via USB Type-C.

Multiview and audio on every input

Four multiview outputs give up to 16 routable windows, able to display inputs, keyed video, graphics and stills from the media pool alongside the programme output. Each input connects to a built-in Fairlight audio mixer supporting up to 156 channels of audio.

Synchronisation on every input

A reference video input is built in, and every input carries its own frame synchroniser, frame rate converter and format converter, running at 10-bit across 3G/HD-SDI.

Keying, generators and control

Keying runs to 16 upstream and 4 downstream keyers, with chroma and luma keying plus colour and pattern generators built in. Control the switcher as hardware or via software for Mac and Windows.