The Blackmagic Design ATEM 1 M/E Constellation 4K is a high-performance live production switcher designed for professional 4K Ultra HD broadcast, live event, and studio production. It provides a robust and scalable platform with a single, fully-featured Mix Effects (M/E) bank, offering comprehensive switching, keying, and effects capabilities tailored for high-resolution workflows. The switcher supports a substantial number of 12G-SDI and HDMI inputs, allowing seamless integration of multiple 4K cameras, graphic servers, and playback devices, with all processing and output in pristine 4K resolution at up to 60 frames per second.

At the heart of the system is its powerful M/E bank, which includes multiple upstream and downstream keyers for graphics and chroma key, an advanced 2D/3D Digital Video Effects (DVE) system for picture-in-picture and complex motion, and dedicated media players for clips and stills. A defining feature is the integrated Fairlight audio mixer, which provides professional-grade audio processing with EQ, dynamics, and mixing across numerous channels, effectively consolidating video and audio production into a single unit. Control is highly flexible, available through dedicated hardware control panels for tactile operation or via software on a computer, with a built-in multi-viewer output providing comprehensive monitoring of all sources and outputs.

Housed in a 1RU rackmount chassis with optional redundant power supplies, the ATEM 1 M/E Constellation 4K is engineered for reliability in continuous broadcast environments. It features dual control network ports for redundancy and supports advanced workflows like upstream keying for adding graphics before the M/E bank and downstream keying for final overlays. By combining extensive 4K video processing, integrated broadcast audio, and robust construction, this switcher delivers a versatile and professional solution for high-quality live production in demanding UHD environments.