ATEM 1 M/E Constellation HD is a professional 1 M/E live production switcher for HD productions. It offers 10 3G-SDI inputs with standards conversion on every input, 6 independently routable 3G-SDI outputs, 4 ATEM Advanced Chroma keyers, 1 multiview, 2 media players, talkback and a Fairlight mixer with 28 channels. It is operated from the front panel, with…
ATEM 1 M/E Constellation HD is a professional 1 M/E live production switcher for HD productions. It offers 10 3G-SDI inputs with standards conversion on every input, 6 independently routable 3G-SDI outputs, 4 ATEM Advanced Chroma keyers, 1 multiview, 2 media players, talkback and a Fairlight mixer with 28 channels. It is operated from the front panel, with ATEM Software Control or with ATEM panels.
ATEM 1 M/E Constellation HD combines 1 M/E, 10 3G-SDI inputs with standards conversion and re-sync and 6 independently routable 3G-SDI outputs. It works in program/preview mode like a television control room: you set up the source on preview and take it to air with the CUT or AUTO button.

The front panel has a 5-pin XLR headset connector and the rear an RJ45 for talkback systems such as ClearCom or RTS. You get production and engineering loops, sidetone and program mix, plus two-way communication with Blackmagic Design cameras over SDI channels 15 and 16.
20 stills and clips for two media players with fill and key – graphics do not take up SDI inputs.
Each of the 6 3G-SDI outputs can be independently routed to any input or internal source. They carry program audio, RP-188 timecode, camera control, tally and talkback.
With 10 inputs you can place cameras all around the stage and build multi-layer compositions from many sources and DVEs. Internal graphics and ATEM Advanced Chroma keyers handle demanding programs, yet operation is simple enough for a trained volunteer crew.

The front panel has source buttons, CUT and AUTO, controls for keyers, media players and fade to black, a 2.2" LCD for preview and menus and a 5-pin XLR headset connector with talkback buttons. The switcher can be set up and used for emergency switching without a computer; the buttons are the same type as on large ATEM panels.

The built-in multiview shows sources on a single monitor. The model has one multiview output. Each multiview can be set to 4, 7, 10, 13 or 16 views, and every view can have a tally border, source label and VU meters.

You get broadcast mix, dip, wipe, DVE and stinger transitions with adjustable duration, border color and width, position and direction. The DVE processor allows picture in picture with 3D borders, shadows and lighting in real time as well as squeeze and swoosh transitions. Transitions can be previewed before going to air.

4 ATEM Advanced Chroma keyers – four per M/E row – handle high quality chroma and luma keying. A color picker samples the background color and sets the key parameters, with precise edge controls and a foreground color corrector to match the foreground to the background. Even a single M/E row is enough for a four camera virtual set.

The USB-C connection works as a webcam: the computer sees the switcher as a regular camera and receives the program in 720p or 1080p at the program frame rate. It works with any video software – Zoom, Microsoft Teams, Open Broadcaster or XSplit Broadcaster – and gives presentations a professional multi-camera look.

The built-in mixer handles 28 channels; every SDI input has a 6-band parametric EQ, compressor, limiter, noise gate and expander, and the mixer also takes the analog input and the talkback microphone. Audio can be sent over USB-C to Fairlight Live, a software mixer for stereo, surround and immersive audio.

ATEM Software Control for Mac and Windows is included: over Ethernet or USB it controls the switcher, media, audio, macros, cameras and HyperDeck recorders, and several people can work in it at once. For hands-on control you can add an ATEM Advanced Panel, ATEM Micro Panel or ATEM Camera Control Panel; the ATEM SDK allows custom automation. All features are included with no license fees.

The rear panel has 10 3G-SDI inputs, 6 3G-SDI outputs, 1 multiview output, a reference input, Ethernet for control, RJ45 for talkback, USB-C and two balanced 6.35 mm analog inputs. It is powered by an internal 100–240 V supply.


280.5 × 176.3 × 44.2 mm (width × depth × height), 1.87 kg. 1 RU high and 2/3 rack wide; it mounts in a 19" rack on a Blackmagic Universal Rack Shelf.

Key details for larger productions
This HD 1 M/E model offers 10 3G‑SDI inputs, standards conversion on the inputs, four keyers and a DVE, USB‑C webcam output and Fairlight audio.
The front panel and LCD simplify setup and smaller productions, while Ethernet connects software and dedicated control panels.
The ATEM 1 M/E Constellation HD is a professional HD production switcher equipped with 10 3G-SDI inputs and advanced features such as Fairlight audio mixing.
Cameras and Studio Sources - Cameras with native SDI output ensure seamless connectivity to the production switcher without the need for additional adapters.
Signal Converters - Essential accessories for converting signals between SDI and HDMI interfaces for monitoring or connecting consumer electronics.
| Manufacturer: | Blackmagic Design |
| Category: | Switchers |
| Number of inputs | 10 |
| Switcher inputs | 3G-SDI |
| Switcher outputs | 3G SDI · USB |
| Scaler on inputs | Yes |
| Resolution | HD |
| Features | Virtual studio · DSK · AUX · Chroma Key · Built-in display · Audio mixing · Media player · Multiviewer |
| Control panel | Yes |
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