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Item #: ATOMNI512
MSRP: $1,600.00

Dual-Channel Networked AV Encoder

OmniStream™ 512

  • Best-in-class AV over IP performance and reliability over Gigabit Ethernet
  • Dual-channel AV encoder for HDMI® up to 4K/UHD, plus embedded audio and RS-232 or IR control pass-through
  • Supports UHD @ 60 Hz plus HDR formats
  • Simplify integration with plug-and-play network switch compatibility
  • Local or PoE (Power over Ethernet) powering



The Atlona OmniStream™ 512 (AT-OMNI-512) is a networked AV encoder with two independent channels of encoding for two HDMI 2.0 sources up to 4K @ 60 Hz and HDR (High Dynamic Range), plus embedded audio and RS-232 or IR control pass-through. It is part of the OmniStream R-Type Series, designed for high performance, flexible distribution of AV over standard, off-the-shelf Gigabit Ethernet switches in residential and light commercial audiovisual applications. The OmniStream 512 is HDCP 2.2 compliant and ideal for the latest Ultra High-Definition and HDR sources. It features advanced high-quality, VC-2 visually lossless video compression, optimized for motion video content. The Atlona OmniStream 512 achieves extremely low, sub-frame latency when paired with OmniStream AV decoders. This dual-channel encoder is housed in a half-width rack enclosure with front-to-back air flow, and is ideal for high-density, compact installation in a centralized equipment location.

Easy to configure, simple to manage

OmniStream AV over IP systems are remarkably easy to set up and manage – whether for a meeting room, residence, divisible room, or an entire university campus. Atlona Management System (AMS) 2.0features automatic network device discovery, plus an intuitive web-based GUI that lets you configure virtual routing for AV, control, and data over the network – just as easily as you would with conventional AV matrix switching. AMS also streamlines and simplifies management of OmniStream systems through continuous system monitoring, notifications and alerts, event logging, multi-device configuration and backup, automated firmware updates, remote device control, and more.

OmniStream product compatibility

The OmniStream 512 is compatible with the OmniStream 521 decoder as well as OmniStream audio interfaces.


  • Multi-room or whole-house AV systems – OmniStream R-Type enables cost-effective system design, allowing the connection of any number of sources to any number of displays, throughout a residence. OmniStream delivers equal performance over new or legacy network cable infrastructure, including CAT 5e.
  • Bars, restaurants, offices, meeting spaces, and other commercial environments – Expand the system by adding encoders and decoders, making video wall, digital signage, and many other applications simple and easy.
  • Home theater and gaming – OmniStream R-Type delivers the uncompromising performance of traditional baseband video systems, making it ideal for applications where both image quality and low latency are crucial.

Atlona AV Over IP Certification

Atlona is pleased to offer Atlona AV Over IP Certification through free, InfoComm-certified and accredited online education courses. With AV Over IP Certification, you’ll have the credibility, knowledge, and confidence to inform your customers on the ideal networked AV system solutions for their requirements, and deliver quality sales and technical support whenever necessary.

Being certified by Atlona gives you priority and key advantages in selling and supporting OmniStream systems. For more information, please contact your Atlona sales representative.

Atlona Professional Services

Atlona provides project design, configuration and management services to system designers and integrators working with OmniStream AV over IP products. A trusted authority in providing support and guidance during the system design and deployment phases, Atlona will work with you to ensure optimal performance and efficiency in your AV over IP projects.

Contact us to get started and we will assign a dedicated engineer to guide you through the project from beginning to end. From creating a customized planner through commissioning to final on-site training, Atlona will provide each customer with the same exceptional level of care and support regardless of size. See our overview of our OmniStream Professional Services:


Best-in-class AV over IP performance and reliability over Gigabit Ethernet

  • Delivers pristine image quality and ultra-low latency over 1 Gbps (GbE) networks
  • Ideal for integration over new or legacy network cable infrastructure – including CAT 5e

AV encoder for HDMI up to 4K/UHD, plus embedded audio and RS-232 or IR control pass-through

  • Streams video, audio, and control, with the flexibility of transmitting them together or to separate network destinations
  • Allows wide-ranging versatility for integrators to design systems to specific requirements

Dual-channel AV encoding

  • Two independent channels of encoding in a single box, with dedicated processing for each channel
  • Allows high-density rack installations and reduces box count for locations with limited space for equipment

Supports UHD @ 60 Hz plus HDR formats

  • Ideal for new and emerging UHD and HDR-capable sources and displays
  • Supports HDR10 @ 60 Hz and 10-bit color, as well as HLG (Hybrid Log-Gamma) for 60p HDR broadcast services
  • Supports Dolby Vision™ @ 60 Hz and 12-bit, delivering a best-in-class dynamic HDR experience. A separate license is required.

High performance, visually lossless video compression

  • SMPTE 2042 VC-2 light video compression with absolutely minimal, sub-frame latency from encode to decode
  • Ensures optimal, pristine-quality graphics and motion video presentations, and is ideal for applications requiring interactivity

HDCP compliance

  • Adheres to the latest HDCP 2.2 specification for High-bandwidth Digital Content Protection
  • Allows protected content streams to pass between authenticated devices
  • HDCP can be disabled through AMS, allowing content to pass to non-compliant displays and teleconference systems. Protected content is not transmitted.

Simplify integration with plug-and-play network switch compatibility

  • Streamline system setup by using Atlona Certified Switch configurations for popular models from Cisco, Pakedge, and many others
  • Saves installation time and costs without the need to manually configure a network switch

Local or PoE (Power over Ethernet) powering

  • With PoE, encoders can conveniently be powered over the network from a PoE-equipped network switch
  • PoE simplifies integration without the need for local AC power, and allows centralized power monitoring and management
  • Optional AT-PS-48083-C power supply available

Secure content distribution with AES-128 encryption

  • Any AV presentation content can be secured by scrambling IP streams
  • Ensures secure content delivery across the network

Supports industry-standard, network security features and protocols

  • HTTPS, SSH, SCP, WebSockets with TLS, and AES-128 encryption

AES67-compatible audio over IP streaming

  • OmniStream features industry standard, AES67-compatible networked audio streaming between encoders, decoders, and audio interfaces
  • Simultaneously stream AES67 and native RTP

Simultaneous OmniStream and AES67 audio streaming

  • OmniStream encoders can deliver native OmniStream RTP networked audio alongside an AES67-compatible audio stream
  • Encoders also can provide multi-channel PCM audio downmixing
  • Allows for streaming multi-channel PCM to OmniStream decoders, plus downmixed PCM audio to an OmniStream 238 audio bridge

Enhance AV presentations with visual enhancements

  • Provide corporate or institutional branding by overlaying a logo
  • Display a full-screen image as a backup in an event of an interruption in an AV stream, or between presentations
  • Identify and label presentation content with static or scrolling text

EDID management

  • Manages EDID communications between source and encoder; allows integrators to force a source to a preferred resolution
  • Ensures desired audio formats and video resolutions are provided to the AV system
  • EDID can be assigned from a display connected to an OmniStream decoder

Audio processing and pass-through

  • Streams PCM, Dolby® Digital, Dolby Digital Plus™, Dolby TrueHD, Dolby Atmos®, DTS® Digital Surround™, DTS-HD Master Audio™, and DTS:X®
  • Supports multi-channel PCM audio downmixing to two-channel PCM

System management

  • Intuitive standalone web GUI
  • Atlona Management System (AMS) – web-based interface for configuration and management of OmniStream systems, and AV over IP cross-connections

Compact enclosure

  • Installs side-by-side in a rack with the optional AT-OMNI-1XX-RACK-1RU rack mount shelf

Included accessories

  • Installation guide, surface mounting brackets, and RS-232 / IR captive screw connector

Award-winning 10 year limited product warranty

  • Ensures long-term product reliability and performance in residential and commercial systems
  • Specify, purchase, and install with confidence



HDMI Specification HDMI 2.0, HDCP 1.4 / 2.2
UHD/HD 4096×2160(DCI)@60/30/24 Hz, 3840×2160(UHD)@60*/50/24/25/30 Hz, [email protected]/24/25/29.97/30/50/59.94/60 Hz, 1080i**@25/29.97/30 Hz, [email protected]/50/59.94/60 Hz
Color Space YUV, RGB
Density Two encoding engine
Decoding Format VC-2 (SMPTE-2042)
Video Quality Optimization Motion Video
Color Depth 8-bit, 10-bit, 12-bit
HDR HDR10, HLG, Dolby Vision***
Bit Rate 900 Mbps
Latency 0.5 frame (e.g. 1080p @ 60 Hz latency is < 8 ms between encoder and decoder) 
1.5 frames in Fast Switching mode (e.g. 1080p @ 60 Hz latency is < 24 ms between encoder and decoder) 
Note: Unusual network configurations may increase overall latency
Pass-through LPCM 2.0, LPCM 5.1, LPCM 7.1, Dolby® Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos®,
DTS®, DTS-HD Master Audio™
Down-mixing Multichannel LPCM to two-channel LPCM
Sample Rate 32 kHz, 44.1k Hz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
Bit Depth Up to 24-bit
Audio/Video Streaming RTP
Addressing DHCP, static
Encryption AES-128
Management HTTPS, SSH, SCP, and WebSockets with TLS
Graphics Features
Text Insertion Adjustable height/width, scrolling (speed, direction, or static), iterations (up to infinite), positioning, and
adjustable color and alpha (transparency) channels.
Slate / Logo Insertion PNG file format, adjustable aspect ratio (keep or stretch), horizontal/vertical size, screen position; slate
mode can be set to off, manual (image always displayed, superimposed on the source signal, and will remain if source signal is lost), auto (image will only be displayed when source signal is lost).
RS-232 Device control and configuration; supports baud rates from 2400 to 115200

Bidirectional pass-through from control system to network
IR Pass-through from control system to network

Pass-through from network to control system
HDMI 2 – Type A, 19-pin, female, locking
ETHERNET**** 2 – RJ45, 10/100/1000 Mbps
RS-232 / IR 1 – Phoenix, 6-pin (2 ports); RS-232 on port 1 and 2, IR on port 2 only
Power 1 – Phoenix, 2-pin
Indicators and controls
PWR 1 – LED, tricolor (red, amber, green)
HDMI 1 – LED, tricolor (red, green)
LINK 1 – LED, bicolor (red, green)
ID 1 – momentary, tact-type, backlit (blue); sends an identification broadcast message over the network to
any listening devices.
Reboot 1 – Momentary, tact-type
PoE IEEE 802.3af
Consumption Up to 12 W
Optional External Supply Input: 110 – 220 V AC, 50/60 Hz

Output: 48 V DC, 0.83 A
Safety CE, FCC, cULus, RoHS, RCM
Fahrenheit Celsius
Operating Temperature +14 to +122 -10 to +50
Storage Temperature -14 to +140 -10 to +60
Humidity (RH) 20 to 95% non-condensing
Weight Pounds Kilograms
  1.5 0.7
Dimensions Inches Millimetres
H x W x D 1.34 x 8.19 x 4.41 34 x 208 x 112
Safety CE, RoHS, FCC

*UHDp60 only supports 4:2:0.

**Scaling and deinterlacing is not supported at 1080i.

***Dolby Vision requires a separate license.

****Maximum distance per hop 300ft (100m), depending upon network connection.




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