Blackmagic Design ATEM 1 M/E Constellation 4K
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Blackmagic Design
https://www.blackmagicdesign.com
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A Modern Evolution of the 1 M/E Format, Designed for Ultra HD
Within the ATEM family, the 1 M/E format is a classic for compact control rooms. The ATEM 1 M/E Constellation 4K adopts this "all-in-one" approach and integrates it into a current workflow: 12G-SDI on all I/O, native Ultra HD processing, extended multi view, and embedded Fairlight audio. Compared to older 1 M/E generations, the experience gains flexibility thanks to conversion on each input, a USB-C webcam output directly usable for streaming, and a more ambitious keying engine for green screen studios.
A 4K Switcher for Mobile Control Rooms, Corporate, and Demanding Live Productions
This video mixer is aimed at teams who need to produce quickly, cleanly, and reliably: corporate events, houses of worship, e-sports, education, multicam recordings, small broadcasters, and mobile control rooms. The 6 routable 12G-SDI outputs facilitate distribution (program, preview, stage returns, recorders, LED walls), while the 16-view multi view secures the production by keeping all sources and key statuses under control. For online broadcasts, the USB-C webcam output simplifies integration into a computer without additional capture hardware.
Technical specifications
| Category | mixer | Inputs | 10x SDI, Ref in SDI, 2x Jack 6,35 |
| Video format | 2160p | Option to increase the number of outputs | No |
| Number of screens | 1.0000 | Option to increase the number of inputs | No |
| Video processing | 10-bits | Weight | 1.87 kg |
| Outputs | 6x SDI, SDI Multiview | Dimensions (mm) | 280 x 226 x 44 |
Questions frequently asked
Does the ATEM 1 M/E Constellation 4K support mixed HD and 4K cameras?
The 10 12G-SDI inputs feature synchronization as well as format and frame rate converters. The switcher supports HD signals up to 1080p60 and Ultra HD up to 2160p60. Sources can thus be aligned despite differing output standards.
How many cameras can be connected to this Blackmagic switcher?
This switcher has 10 12G-SDI video inputs.
Can the program be streamed to a computer without a capture card?
A USB-C output presents the program as a UVC webcam. The signal is available in 720p or 1080p at the program’s frame rate. This USB 2.0 connection facilitates use with streaming software on a computer.
What green screen options does this video switcher offer?
Four advanced chroma keyers are available for green screen setups. The engine also includes 1 DVE, 1 downstream keyer, and 5 linear or luma keyers. A total of seven layers can be managed.
How are sources controlled during a multicam live production?
The configurable multiview displays from 4 to 16 windows with labels, audio meters, and tally states. The 6 12G-SDI outputs are routable to provide program feed, preview, or returns.



