Blackmagic Design ATEM 2 M/E Constellation 4K Blackmagic Design

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ATEM 2 M/E Constellation 4K is a professional 2 M/E live production switcher for Ultra HD productions. It offers 20 12G-SDI inputs with standards conversion on every input, 12 independently routable 12G-SDI outputs, 8 ATEM Advanced Chroma keyers, 2 multiviews, 2 media players, talkback and a Fairlight mixer with 48 channels. It is operated from the front panel, with ATEM Software Control or with ATEM panels.

Ultra HD 2 M/E switcher with 20 12G-SDI inputs

ATEM 2 M/E Constellation 4K combines 2 M/E, 20 12G-SDI inputs with standards conversion and re-sync and 12 independently routable 12G-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.

20× 12G-SDI input12× 12G-SDI output2 M/E · 6× DVE8× Advanced Chroma2× multiview1 RU

Broadcast-style talkback

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.

USB-C webcam

The program goes to the computer as a 720p or 1080p webcam at the program frame rate – for Zoom, Teams, OBS and XSplit.

Outputs for everyone

Each of the 12 12G-SDI outputs can be independently routed to any input or internal source. They carry program audio, RP-188 timecode, camera control, tally and talkback.

For concerts, sport and houses of worship

With 20 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.

2 independent multiviews

The built-in multiview shows sources on a single monitor. The model has two independent multiviews for up to 32 views. 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.

Transitions, DVEs and stingers

You get broadcast mix, dip, wipe, DVE and stinger transitions with adjustable duration, border color and width, position and direction. 2 independent DVE processors allow 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.

ATEM Advanced Chroma Key

8 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.

SuperSource processor

In addition to the DVEs in the M/E rows, the model has a SuperSource processor with four extra DVE layers and a background layer from the media pool. The switcher sees it as another input – ideal for picture in picture interviews while the main DVEs stay free. In total the model offers 6 DVEs.

Fairlight audio mixer

The built-in mixer handles 48 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.

Software and hardware panels

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.

Control panel and connections

The rear panel has 20 12G-SDI inputs, 12 12G-SDI outputs, 2 multiview outputs, 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.

Dimensions and weight

482 × 234 × 44.2 mm (width × depth × height), 3.64 kg. It takes 1 RU in a 19" rack.

• ATEM 2 M/E Constellation 4K
• Welcome wallet with QR code for software download

• Video inputs: 20× 12G-SDI, 10-bit
• Video outputs: 12× independently routable 12G-SDI, 2× multiview
• Standards conversion and re-sync: on all 20 inputs
• Video standards: 720p50–60, 1080i50–60, 1080p23.98–60, 2160p23.98–60; 10-bit 4:2:2, Rec. 709 and Rec. 2020
• SDI rates: 1.5G, 3G, 6G and 12G, auto detection
• M/E rows: 2 M/E
• Keyers: 8× upstream (ATEM Advanced Chroma), 2× downstream, 11× linear/luma
• DVE: 2× DVE in the M/E rows, 1× SuperSource, 6 DVEs in total; mix, dip, wipe, DVE and stinger transitions
• Multiview: 2× (4, 7, 10, 13 or 16 views)
• Media players: 2× with fill and key; 40 stills; clips up to 1600 frames in 1080 HD (3200 in 720p, 400 in Ultra HD)
• Audio: Fairlight mixer with 48 channels, 6-band EQ, compressor, limiter, expander, gate; 8 channels of embedded audio on SDI inputs, 16 on outputs
• Audio connections: 2× balanced 6.35 mm jack input
• Talkback: 5-pin XLR on the front panel, RJ45 for ClearCom and RTS systems; SDI channels 15 and 16
• Reference: Tri-Sync or Black Burst
• Timecode: internal generator
• Remote control: Ethernet
• HD down conversion: 1 selectable HD down converted output
• Webcam: USB-C, 720p or 1080p at the program frame rate
• Computer: USB-C (USB 2.0)
• Control: front panel with 2.2" LCD, ATEM Software Control (macOS 14 Sonoma, macOS 15 Sequoia or later, Windows 10 and 11), ATEM panels over Ethernet
• Tally: over Ethernet with the GPI and Tally Interface (not included); tally borders in the multiview
• Power: 1× internal 100–240 V AC supply, 140 W
• Installation: 1 RU
• Dimensions: 482 × 234 × 44.2 mm
• Weight: 3.64 kg
• Operating temperature: 0 to 40 °C
• Storage temperature: −20 to 60 °C
• Relative humidity: 0 to 90 %, non-condensing
• Warranty: 1 year limited manufacturer warranty