ATEM 4 M/E Constellation IP is a native SMPTE-2110 live production switcher with 4 M/E for large broadcast and live event productions. It offers 32 inputs and 32 outputs over 8 100G Ethernet QSFP28 connections with SMPTE 2022-7 redundancy, standards conversion and re-sync on every input, 16 ATEM Advanced Chroma keyers, 4 multiviews, 2 SuperSource processors…
ATEM 4 M/E Constellation IP is a native SMPTE-2110 live production switcher with 4 M/E for large broadcast and live event productions. It offers 32 inputs and 32 outputs over 8 100G Ethernet QSFP28 connections with SMPTE 2022-7 redundancy, standards conversion and re-sync on every input, 16 ATEM Advanced Chroma keyers, 4 multiviews, 2 SuperSource processors (12 DVEs in total) and a Fairlight mixer with 68 channels.
ATEM 4 M/E Constellation IP is a 4 M/E switcher for SMPTE-2110 networks: 32 inputs and 32 outputs over redundant 100G Ethernet, standards conversion on every input and the features you know from ATEM Constellation – DVEs, keyers, media players, multiviews and SuperSource.

SMPTE 2022-7 on all video ports, redundant PTP clock and control Ethernet connections, two internal power supplies and front-to-back cooling.
The rear USB-C sends the program to a computer as a 720p or 1080p webcam at the program frame rate – for Zoom, Teams, OBS and XSplit.
NMOS IS-04 and IS-05 for device discovery and connection management, PTP clock to IEEE 1588-2008 and SMPTE ST 2059 over two dedicated RJ45 ports.
8 QSFP28 connectors form 4 100G Ethernet pairs, and each pair carries eight input and eight output Ultra HD channels. The two connectors of a pair can go to two different network switches: SMPTE 2022-7 Seamless Protection Switching sends two identical copies of video and audio and the receiver builds the frame from the packets that arrive first, so losing one path is completely seamless.

In real productions not all network sources run in the same format. Each input channel therefore has its own standards converter that automatically converts the source to the switcher standard. Formats 720p, 1080i, 1080p and 2160p up to 60p are supported; with a Blackmagic SDI Expander 8x12G you can also connect 12G-SDI equipment including program return, tally, talkback and camera control.

The built-in multiview shows sources on a single monitor. The model has four independent multiviews for up to 64 views on four monitors; multiviews can be routed to any 2110 output and follow the switcher standard. 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.

In addition to the DVEs in the M/E rows, the model has two completely independent SuperSource processors 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 12 DVEs.

16 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 switcher mixer has 68 channels with EQ and dynamics and fully integrates with Fairlight Live – a 2110 software mixer for stereo, surround and immersive audio connected over USB. Fairlight Live adds as many talkback busses as you need; the built-in talkback uses audio channels 15 and 16 for two-way communication with Blackmagic Design cameras.

Front-to-back cooling leaves only an LCD preview, menus, USB-C, headphones and a speaker on the front panel. Classic buttons come with the optional ATEM Monitoring Rack Panel: it has the same controls as the SDI models, its own Ethernet port, a redundant 10G Ethernet SMPTE-2022-7 to 12G-SDI and HDMI converter for local monitoring and a 5-pin talkback interface.

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 8 100G QSFP28 connectors (4 redundant Network 1 and Network 2 pairs), two RJ45 ports for the 2110 PTP clock, two 10G RJ45 control ports, a 1G management port, USB-C and two IEC C14 power connectors. The front has USB-C, a 6.35 mm headphone output, a speaker, an LCD and menu buttons.


482.6 × 220 × 88.4 mm (width × depth × height), 5.67 kg. It takes 2 RU in a 19" rack.

Network redundancy and production workflow
They are designed for high-end broadcast and live production, and their design includes front-to-back cooling, extensive redundancy, SMPTE-2022-7 support on all 100G video ports, redundant PTP clock connections, 2× 10G Ethernet for control ports, and redundant AC power supplies.
The ATEM 4 M/E Constellation IP has a significantly different design, as it is intended for high-end broadcast operations. The design utilizes front-to-back cooling with 4 very quiet fans. All connections feature full redundancy with SMPTE-2022-7 on all video ports, plus additional redundancy on control and PTP Ethernet ports. The built-in LCD display shows all standard ATEM Constellation status information and provides access to settings. The front panel also includes a headphone output and a built-in speaker for local program monitoring.
The standard 4 M/E model features 32 inputs with standard SMPTE-2022-7 conversion via 4 sets of dual redundant 100G Ethernet connections. It also offers 32 SMPTE-2110 outputs, 16 ATEM Advanced Keyers, 4 multiview previews, and 2 SuperSources, for a total of 12 DVEs.
The ATEM 4 M/E Constellation IP supports multiple SMPTE-2110 connections via 100G Ethernet, with each connection supporting 8 input and 8 output video channels. The switcher maps inputs and outputs across multiple 100G Ethernet connections. Each 100G Ethernet connection has two separate connectors to support SMPTE-2110 redundancy, so each port can be connected to a different switch. SMPTE 2022-7 Seamless Protection Switching sends two identical copies of video and audio over two paths and, on the receiving end, compares RTP packets by order and reconstructs the image from the first packet received. The switching is completely seamless.
One of the advantages of SMPTE-2110 is that network video sources use the same standard. In practice, however, live production isn’t always straightforward, and sources often operate in different formats. The ATEM 4 M/E Constellation IP solves this problem because each input has a dedicated format converter. All inputs are thus automatically converted to the switcher’s standard, allowing any source to be connected.
The ATEM 4 M/E Constellation IP supports all common broadcast standards. Thanks to conversion on all inputs, you can work with different formats simultaneously. It supports both HD and Ultra HD standards, including 720p, 1080i, 1080p, and 2160p up to 60p. This is essential for working on various productions around the world. Talkback, tally, and control signals can also be sent to SDI devices when the Blackmagic SDI Expander 8x12G is connected, enabling feedback to cameras for program return, camera control, and communication.
Fairlight Live is the most powerful 2110 software audio mixer for broadcast and live events. It supports audio routing to and from ATEM switchers via USB and, unlike hardware mixers, natively supports stereo, surround, and immersive audio. It offers support for third-party plugins, AFL/PFL Solo, talkback, and advanced input features such as remote gain and dual inputs. It also includes a cue player, snapshots, an internal matrix, and other features. Multiple systems can be run for multiple users or full redundancy.
All ATEM 4 M/E Constellation switchers feature a simple built-in talkback system that uses audio channels 15 and 16 for two-way communication with Blackmagic Design cameras. However, Fairlight Live offers multiple talkback buses and full audio routing to the ATEM 4 M/E Constellation IP, allowing you to create any number of talkback buses. This enables even more advanced communication, including camera and technical loops, commentator buses, and separate mixes for each user. Simply route the talkback bus to channels 15 and 16 of any ATEM output and send it to cameras or commentators.
The front-to-back cooling design of the ATEM 4 M/E Constellation IP limits the space available for front-panel controls. The ATEM Rack-Mount Monitoring Panel solves this problem by combining control and monitoring functions. It offers the same controls as the SDI models and functions as a standalone monitoring converter and control panel. It features a rack-mount design with professional buttons, a dedicated Ethernet port, a redundant 10G Ethernet SMPTE-2022-7 to 12G-SDI and HDMI converter for local monitoring, and a 5-pin talkback interface on the front panel.
Key features
| Manufacturer: | Blackmagic Design |
| Category: | Switchers |
| Number of inputs | 32 |
| Switcher inputs | SMPTE 2110 (100G Ethernet) |
| Switcher outputs | USB · SMPTE 2110 (100G Ethernet) |
| Scaler on inputs | Yes |
| Resolution | 4K 60p |
| Features | Virtual studio · DSK · AUX · Chroma Key · Built-in display · Audio mixing · Media player · Multiviewer |
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