AT-OMNI-521 * Discontinued *

AT-OMNI-521 * Discontinued *

AT-OMNI-521

Best-in-class AV over IP performance and reliability over Gigabit Ethernet
AV decoder for HDMI^® output up to 4K/UHD, plus embedded audio and RS-232 or IR control pass-through
Supports 4K/60 4:4:4 plus HDR formats
Advanced VCx™ codec delivers artifact-free presentation of computer-generated content and fast-motion video
Ultra-fast switching between 4K/60 video streams
Thumbnail preview of encoded video streams through Velocity™ AV control or web GUI
Remotely powered via PoE (Power over Ethernet)
Video wall processing and other visual enhancements

SKU: AT-OMNI-521 Category: Discontinued

NOTE: The AT-OMNI-521 is discontinued. The AT-OMNI-121 is the recommended replacement product. For compatibility with the AT-OMNI-512 encoder, the OMNI-121 must be configured with VC-2 Video Optimization set to Video mode.

Unsurpassed AV over IP Performance and Reliability over Gigabit Ethernet

Artifact-free graphics and video

OmniStream is powered by the advanced VCx codec which delivers 4K/60 4:4:4 from encode to decode, with pristine-quality presentation of computer-generated and fast-motion video content.

Ultra-fast switching

A user can switch between video streams up to 4K/60 from OmniStream AV encoders with less than a half-second transition. Fast switching works between video streams at different resolutions and frame rates.

Designed for system expansion

The VCx codec is highly efficient, allowing numerous 4K and 1080p streams over 10 Gigabit uplinks between network switches. This is a powerful advantage when designing systems for scalability.

Additional Features

The Atlona AT-OMNI-521 is a networked AV decoder for HDMI output up to 4K/60 4:4:4 and HDR. It features the advanced VCx™ codec which delivers artifact-free image presentation, ultra-fast switching, and ultra-low latency.

Thumbnail preview

View encoded source streams on a touch panel or web GUI before selecting a source for display.

Ethernet link testing

A built-in tool to evaluate integrity of the network infrastructure for your OmniStream system.

Power over Ethernet

OmniStream endpoints can be remotely powered by a network switch through standard PoE.

Network security

Industry-standard, network security features and protocols including HTTPS, SSH, and AES-128.

See more technical details

Videos

OmniStream 2.0 New Features

Introducing OmniStream 2.0, a major technology update with new features and performance capabilities.

OmniStream 2.0 Technology Update

A comprehensive overview of the new features and performance capabilities with OmniStream 2.0.

High Efficiency Coding

Learn about the benefits of highly efficient video coding over Gigabit Ethernet.

Fast Switching

Here is a demonstration of OmniStream’s fast switching capabilities.

Details

The Atlona AT-OMNI-521 is a networked AV decoder for HDMI output supporting resolutions up to 4K/60 4:4:4 and HDR (High Dynamic Range), and RS-232 or IR pass-through. OmniStream is designed for high performance, flexible distribution of AV over standard, off-the-shelf Gigabit Ethernet switches in commercial audiovisual applications. The OMNI-521 decoder features the advanced VCx™ codec which delivers 4K/60 4:4:4 video from encode to decode, with artifact-free presentation of computer-generated content and fast-motion video, and ultra-low latency less than one frame. This decoder is housed in a half-width rack enclosure with front-to-back air flow, and is ideal for high-density, compact installation in distributed, multi-display installations.

Easy to Configure, Simple to Manage

OmniStream AV over IP systems are remarkably easy to set up and manage – whether for a meeting room, retail establishment, auditorium, divisible room, or an entire university campus. Velocity™ Device Manager features 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. Velocity Device Manager 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.

Product Compatibility

The OMNI-521 is compatible with the OMNI-512 encoder, as well as the OMNI-111, OMNI-111-WP, and OMNI-112 encoders.

Designed for Pro AV Integration

The OMNI-521 includes several features for optimizing integration and enhancing professional AV presentations. EDID and HDCP management features ensure reliable, consistent system operation and compatibility with source devices. EDID management includes the option to assign an EDID captured from a display at an OmniStream AV decoder. Aspect ratio controls are available to specify the presentation viewing format as desired by the end user. Additionally, OmniStream offers the option to overlay a logo image (PNG with transparent background) onto an AV presentation for corporate or institutional branding. A full-screen image can also be displayed, as a backup in an event of an interruption in an AV stream, or to display information between presentations.

OmniStream delivers fast switching between 4K/60 video streams from OmniStream encoders. Encoded video streams can be previewed in a Velocity™ touch panel GUI, or through the web GUI for an OmniStream decoder.

Ethernet Link Testing

OmniStream AV over IP systems feature Ethernet link testing, a convenient feature for integrators and technicians to test integrity of the network infrastructure. Testing is initiated from the encoder web GUI, and performed between an encoder and decoders joined to it in a multicast group. Test results can be monitored from the encoder and decoder web GUI, avoiding the need to visually check for an image at each display location.

Applications

Multi-room or multi-zone AV systems – OmniStream enables cost-effective system design, allowing the connection of any number of sources to any number of displays. 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.
High quality AV presentations – OmniStream delivers the uncompromising performance of traditional baseband video systems, making it ideal for applications where both image quality and low latency are crucial.

Atlona Academy Training and Certification

Atlona offers online education courses and certification for OmniStream. This is a great opportunity to learn about networked AV systems, the OmniStream product family, and the essential principles of data networking.

With certification, you’ll have the credibility, knowledge, and confidence to inform your customers on the ideal AV over IP system solutions for their requirements, and deliver quality sales and technical support whenever necessary.

Certification is required for all new Atlona dealers wanting to sell OmniStream AV over IP products.

Features

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 decoder for HDMI output up to 4K/UHD, plus RS-232 or IR control pass-through

Decodes video, audio, and control, with the flexibility of receiving them together or from separate network sources
Allows wide-ranging versatility for integrators to design systems to specific requirements

Supports 4K/60 4:4:4 plus HDR formats

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 color

Advanced VCx codec

Delivers 4K/60 4:4:4 with artifact-free presentation of computer-generated content and fast-motion video
Ultra-low encode-to-decode latency less than 1 frame

High-efficiency coding

VCx codec allows numerous 4K streams over 10 Gigabit uplinks between network switches

Integrated high-quality scaler

OMNI-521 includes an integrated, high-performance scaling engine
Provides upscaling and downscaling for a wide array of 4K/UHD, HD, and VESA resolutions

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 Velocity Device Manager, allowing content to pass to non-compliant displays and teleconference systems. Protected content is not transmitted.

Ultra-fast switching between 4K/60 video streams*

Provides instantaneous and precise video and audio HDMI switching
Works between streams at different resolutions and frame rates
Ideal for mission-critical applications where stable, fast AV switching is required
* Logo / image display features and 1080i video are not supported.

Integrated Ethernet link testing

Tests integrity of the network infrastructure between encoders and decoders (cabling, terminations, switch, bandwidth)
Allows quick, easy verification or troubleshooting from the encoder and decoder web GUI – no need to visually check each display location

Thumbnail preview of encoded video streams

View encoder streams as thumbnails on a Velocity touch panel or through the web GUI
Ideal for previewing sources before selecting for display
Also ideal for validating system operation

Simplify integration with plug-and-play network switch compatibility

Streamline system setup by using Atlona Certified Switch configurations for popular models from Cisco^®, NETGEAR^®, and many others
NETGEAR switches also available from Atlona (United States and Canada only)
Saves installation time and costs without the need to manually configure a network switch

PoE (Power over Ethernet) powering

With PoE, decoders 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

Secure content distribution with AES-128 decryption

Decrypt AES-128 content from any OmniStream encoder
Ensures secure content delivery across the network

Supports industry-standard, network security features and protocols

HTTPS, Telnet, SSH, WebSockets with TLS, and AES-128 encryption

AES67-compatible

OmniStream supports industry standard, AES67-compatible networked audio streams from encoders and audio interfaces
Supports multi-channel PCM up to 7.1 channels

Video wall processing

Processing for video walls with portrait and landscape displays up to 16×16 @ 4K/30 and 2×2 @ 4K/60 with precision wall-tile alignment

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

EDID from a connected display can be copied and stored; EDID can also be assigned to a specific timing
Ensures desired audio formats and video resolutions are provided to the AV system

Audio processing and pass-through

Multi-channel 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

Display control

Supports IR, bidirectional RS-232, and CEC to control connected displays
Bidirectional TCP proxy enables RS-232 commands over TCP/IP

System management

Intuitive standalone web GUI
Velocity Device Manager – 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

Product Warranty

To view the product warranty, use the following link: https://atlona.com/warranty/

Specifications

Video
Signal	HDMI
Copy Protection	HDCP 2.2
UHD/HD/SD	4096×2160 (DCI) @ 30/24 Hz 3840×2160⁽¹⁾ (UHD) @ 60/50/24/25/30 Hz 1920x1080p @ 23.98/24/25/29.97/30/50/59.94/60 Hz	1920x1080i⁽²⁾ @ 25/29.97/30 Hz 1280x720p @ 30/50/59.94/60 Hz
VESA⁽³⁾	2560×1600 1920×1200 1680×1050 1600×1200 1600×900 1440×900 1400×1050	1366×768 1360×768 1280×1024 1280×800 1280×768 1152×768 1024×768
Color Space	YUV, RGB

Encoding
Density	Single decoding engine
Compression Format	VCx and VC-2 (SMPTE-2042)
Video Quality Optimization	User-selectable: PC Application or Video mode (VC-2 codec only)
Chroma Subsampling	Chroma	VCx	VC-2 Video
	4:4:4	Yes	No
	4:2:2	Yes	No
	4:2:0	Yes	Yes
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.
Output Resolution in Fast Switching Mode	Up to 4K60 (VCx) or 1080p60 (VC-2)

Audio
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, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
Bit Depth	Up to 24-bit

Protocols
Video Streaming	RTP
Audio Streaming	RTP, up to 7.1 channels AES67, up to LPCM 7.1 channels
Addressing	DHCP, static
Encryption	AES-128
QoS Tagging	RFC 2475
Discovery	Multicast DNS, LLDP, SAP
Management	HTTPS, SSH, Telnet, and WebSockets with TLS
IP Multicast	IGMPv2 and IGMPv3 support

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⁽⁴⁾	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).

Control
CEC	Supported and triggered from control systems and OmniStream encoders
RS-232	Device control and configuration; supports baud rates from 2400 to 9600 Bidirectional pass-through from control system to network Bidirectional TCP Proxy (RS-232 commands over IP)
IR	Pass-through from control system to network Pass-through from network to control system

Connectors
HDMI	1 – Type A, 19-pin, female, locking
ETHERNET⁽⁵⁾	1 – RJ45, 10/100/1000 Mbps
RS-232 / IR	1 – Euroblock, 6-pin (2 ports); RS-232 on port 1 only, IR on port 2 only

Indicators and controls
PWR	1 – LED, tricolor (red, amber, 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

Power
PoE	IEEE 802.3af
Consumption	Up to 12 W
BTU/h	40.9

Environmental	Fahrenheit	Celsius
Operating Temperature	+14 to +122 °F	-10 to +50 °C
Storage Temperature	+14 to +140 °F	-10 to +60 °C
Operating Humidity (RH)	20% to 95%, non-condensing
Maximum Operating Altitude	2000 meters
Cooling System	Front-to-rear airflow, temperature-controlled fans

Chassis	Inches		Millimeters
Dimensions (H x W x D)	1.34 x 8.19 x 4.41		34 x 208 x 112

Weight	Pounds		Kilograms
Unit	1.5		0.7

Certification
Device	CE, FCC, CB, RoHS

Compliance
NDAA-899	Yes
TAA	Yes

Warranty
Device	To view the product warranty, use the following link: https://atlona.com/warranty/

⁽¹⁾ Using VCx, streaming is supported up to 4K60 4:4:4. Using VC-2 Video Mode, 4K60 and 4K50 resolutions will be chroma subsampled to 4:2:0 before streaming.

⁽²⁾ Interlaced sources are passed-through without modification, and do not support scaling, video wall, logo insertion, text insertion, or fast switching.

⁽³⁾ All VESA resolutions are 60 Hz.

⁽⁴⁾ Slate insertion is limited to 1080p only.

⁽⁵⁾ Maximum distance per hop is 330 feet (100 meters), depending upon network configuration.

Diagrams

Light commercial AV – bars and restaurants

Use OmniStream R-Type to create efficient yet scalable system designs for sharing TV broadcasts everywhere without the restriction of a fixed matrix switcher. Expand the possibilities with video walls and on-screen, scrolling text messages.

Digital signage

Digital signage systems are usually asymmetrical – a few sources feeding a large number of destinations – and a challenge for traditional AV designs. But with OmniStream, it’s simply a matter of provisioning a decoder and network drop for each display.

Resources

Documentation

	Datasheet
	OmniStream Solution Setup and Config Guide
	Installation Guide
	Manual
	CLI Command Set and JSON over WebSocket

Integration Note

	Symetrix Integration Note
	QSC Integration Note

Declaration of Conformity

	AT-OMNI-521
	CE AT-OMNI-521
	UK AT-OMNI-521

CAD File

AT-OMNI-521

Support

	Network Assignment Planner
	Product Engineering Document
	OmniStream IT Deployment Guide
	OmniStream Certified Network Switches
	JSON over WebSocket Schema
	OmniStream FAQs
	AV Over IP Glossary of Terms

Related Products

Product	Description
AT-OMNI-512	Dual-Channel Networked AV Encoder
AT-OMNI-111	Single-Channel Networked AV Encoder
AT-OMNI-111-WP	Wallplate Networked AV Encoder
AT-OMNI-112	Dual-Channel Networked AV Encoder
AT-OMNI-311	USB to IP Adapter
AT-OMNI-324	IP to USB Adapter
AT-OMNI-IR-TX	IR Emitter Cable for OmniStream Encoders and Decoders
AT-IR-CS-RX	IR Receiver Cable for PoE Extenders
AT-OMNI-1XX-RACK-1RU	1U Rack Mount Shelf for OmniStream Encoders and Decoders
AT-VGW-SW	Software Gateway for AV Control and Management plus Room Scheduling
AT-VGW-HW	Hardware Gateway for AV Control and Management plus Room Scheduling

Similar Products

Product	Description
AT-OMNI-121	Single-Channel Networked AV Decoder

AT-OMNI-521 Firmware

Firmware	AT-OMNI-521 Firmware Version 2.0.3
File Size	102 MB
Date	08.21.24

Important! To ensure compatibility with OmniStream firmware version 2.0.0 and above, Velocity Device Manager must be running version 2.5.3 or greater.

Release Notes

Version 2.0.3

Features

General

Patched a vulnerability that could be exploited via special character insertion in the URL.
Updated the nginx server to get the latest security patches.
Updated the OpenSSH library to 9.8p1.
Updated the HDMI interface logic on encoders and decoders.

Bug Fixes

Encoder

Resolved compatibility issues with Apple Silicon-based devices.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Link test results may be inaccurate when an encoder is configured for dual streaming.
Encoders using a 1080p EDID might encounter issues with input video from an M1 or M2 Macbook using an Apple USB-C to HDMI adapter. A workaround is to use a 4K EDID and then enable scaling on either the encoder or decoder depending on the requirements of the system.
Cannot set the Ethernet interface to “Not Used” if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Previous Releases

Version 2.0.2

Bug Fixes

General

Resolved an issue where devices have an active link-local IP addresses even when assigned a static or DHCP IP address.

Encoder

Resolved an issue on the AT-OMNI-112 where the client MAC address does not correspond to the MAC address in the header of the Ethernet frame.

Decoder

Resolved several issues that could result in one or more displays in a videowall showing no content.
Resolved an issue where the decoder slate image would not be shown if the slate resolution does not match the decoder output resolution. Note: The slate resolution can be shown at a maximum of 1920×1080. When the output resolution of the decoder is set to higher than 1920×1080, the slate resolution will be fixed at 1920×1080.
Resolved an issue where the HDMI Output Framerate setting was not being honored. Note: the framerate setting applies in all operating modes and for all resolutions, except for frame rate conversion when using 4K output, in which case framerate conversion only applies if Fast Switching is enabled.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Link test results may be inaccurate when an encoder is configured for dual streaming.
Encoders using a 1080p EDID might encounter issues with input video from an M1 or M2 Macbook using an Apple USB-C to HDMI adapter. A workaround is to use a 4K EDID and then enable scaling on either the encoder or decoder depending on the requirements of the system.
Cannot set the Ethernet interface to “Not Used” if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

The use of Bezel Compensation in Videowall mode triggers a notification that the selected Videowall height is not supported. This notification is cosmetic in nature and does not reflect an actual problem.
The AT-OMNI-122, when running OmniStream 2.x, will only negotiate HDCP 1.4 on one of the two outputs.
When using the VCx codec with fast switching disabled, color flashes might be seen when switching streams. This can be resolved by enabling fast switching.
When switching a subframe within a multiview to an ip_input already in use on the multiview, the subframe showing that ip_input will blink momentarily.
Decoders configured to use the VCx codec and with fast switching disabled may see issues with certain Dell DVI displays. This can be resolved by enabling fast switching.
If fast switching is enabled with a timeout set to 0 seconds (infinite hold), if the timeout is then changed to a non-zero value, infinite hold remains. Rebooting the decoder will resolve this issue.
Decoders with fast switching and text insertion enabled may encounter issues with Epson projectors. Workaround options include disabling decoder text insertion or using the encoder for text insertion.
Moving a decoder between a display that does not support Dolby Vision and one that does support Dolby Vision might result in an issue on the output. Re-seating the HDMI cable should resolve this.
In some instances following a settings change to disable fast switching the HDMI output will fail to sync. Re-seating the HDMI cable should resolve this.
Dolby Vision content can have issues on some displays when using VCx or VC-2 PC Application modes with fast switching enabled. Disabling fast switching or switching to VC-2 Video mode should resolve the issue.
When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 2.0.1

Features

General

The maximum number of open Telnet and SSH connections to a unit is now 25.

Decoder

Enabling Video Wall on the decoder now automatically sets the Stretch/crop mode to “fullscreen”.

Bug Fixes

General

Resolved a memory leak issue when using the CLI and the connection does not get properly closed.

Encoder

Resolved an issue that caused test insertion to become distorted when the input resolution is 3840×2160 and the slate image is active.
Resolved an issue that caused the slate image to stream as a black image when the encode scaler is set to 3840×2160. NOTE: the slate image cannot be scaled to 3840×2160 in the encoder. If the scaler is set to this resolution, the slate image will be streamed at 1920×1080 when the slate is active.

Decoder

Resolved an issue that caused decoders configured for Video Wall to lock up when the incoming stream resolution changes.
Resolved an issue that could result the Interface field of IP Inputs being set to “N/A”.
Resolved an issue that caused decoders configured for Video Wall with an output resolution of “Auto” to select a 4K output resolution, which is not valid for Video Walls.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Link test results may be inaccurate when an encoder is configured for dual streaming.
Encoders using a 1080p EDID might encounter issues with input video from an M1 or M2 Macbook using an Apple USB-C to HDMI adapter. A workaround is to use a 4K EDID and then enable scaling on either the encoder or decoder depending on the requirements of the system.
Cannot set the Ethernet interface to “Not Used” if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When the decoder slate resolution and scaler output resolution differ from the incoming stream resolution, the slate may fail to display. A workaround is to the set the decoder output resolution to “Auto”.
The AT-OMNI-122, when running OmniStream 2.x, will only negotiate HDCP 1.4 on one of the two outputs.
When using the VCx codec with fast switching disabled, color flashes might be seen when switching streams. This can be resolved by enabling fast switching.
When switching a subframe within a multiview to an ip_input already in use on the multiview, the subframe showing that ip_input will blink momentarily.
Decoders configured to use the VCx codec and with fast switching disabled may see issues with certain Dell DVI displays. This can be resolved by enabling fast switching.
If fast switching is enabled with a timeout set to 0 seconds (infinite hold), if the timeout is then changed to a non-zero value, infinite hold remains. Rebooting the decoder will resolve this issue.
Decoders with fast switching and text insertion enabled may encounter issues with Epson projectors. Workaround options include disabling decoder text insertion or using the encoder for text insertion.
Moving a decoder between a display that does not support Dolby Vision and one that does support Dolby Vision might result in an issue on the output. Re-seating the HDMI cable should resolve this.
In some instances following a settings change to disable fast switching the HDMI output will fail to sync. Re-seating the HDMI cable should resolve this.
Dolby Vision content can have issues on some displays when using VCx or VC-2 PC Application modes with fast switching enabled. Disabling fast switching or switching to VC-2 Video mode should resolve the issue.
When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 2.0.0

Features

General

Release of the new VCx codec, which offers a number of improvements to the OmniStream platform:

Support for 4K60 4:4:4.
Support for 4K60 fast switching.
Support for OMNI-111 dual streaming.
Support for encoder thumbnails.
Support for decoder multiview.

Added support for Ethernet link testing.
Hardware revisions that had the serial number programmed in the factory will now display those on the web UI.
Numerous web interface improvements.

Encoder

The AT-OMNI-112 encoder now has SAP announcement enabled as part of the default configuration.
Scrambling is now enabled by default.

Decoder

Scrambling is now enabled by default.

Bug Fixes

Encoder

Resolved an issue that prevented the slate from automatically showing when the HDMI input is set to “Not used”.
Resolved an issue that caused audio distortion when using AES67.
The HDCPSetx command now accepts “off” as a parameter.
Resolved an issue where AES67 audio sent from an AT-OMNI-512 to a QSC Core 110f did not work.
Resolved an issue where the slate would not appear in Auto mode if text overlay was enabled.
Resolved an issue where the slate would not appear in Auto mode when the encoder input is set to “Not used”

Decoder

Resolved an issue where the decoder would not correctly handle changes between drop and non-drop frame rates with fast switching enabled.
Resolved an issue that would cause the web UI to hang if the decoder attempts to join a multicast address with an incorrect port number.
Resolved an issue where the decoder will report an output resolution even though no source or sink is connected.
Disconnecting the video source when fast switching is enabled no longer results in a corrupted last frame.
Resolved an issue where decoder would reboot if connected to a sink with multiple CEA extension video blocks.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Link test results may be inaccurate when an encoder is configured for dual streaming.
Encoders using a 1080p EDID might encounter issues with input video from an M1 or M2 Macbook using an Apple USB-C to HDMI adapter. A workaround is to use a 4K EDID and then enable scaling on either the encoder or decoder depending on the requirements of the system.
Cannot set the Ethernet interface to “Not Used” if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When the decoder slate resolution and scaler output resolution differ from the incoming stream resolution, the slate may fail to display. A workaround is to the set the decoder output resolution to “Auto”.
The AT-OMNI-122, when running OmniStream 2.x, will only negotiate HDCP 1.4 on one of the two outputs.
When using the VCx codec with fast switching disabled, color flashes might be seen when switching streams. This can be resolved by enabling fast switching.
When switching a subframe within a multiview to an ip_input already in use on the multiview, the subframe showing that ip_input will blink momentarily.
Decoders configured to use the VCx codec and with fast switching disabled may see issues with certain Dell DVI displays. This can be resolved by enabling fast switching.
If fast switching is enabled with a timeout set to 0 seconds (infinite hold), if the timeout is then changed to a non-zero value, infinite hold remains. Rebooting the decoder will resolve this issue.
Decoders with fast switching and text insertion enabled may encounter issues with Epson projectors. Workaround options include disabling decoder text insertion or using the encoder for text insertion.
Moving a decoder between a display that does not support Dolby Vision and one that does support Dolby Vision might result in an issue on the output. Re-seating the HDMI cable should resolve this.
In some instances following a settings change to disable fast switching the HDMI output will fail to sync. Re-seating the HDMI cable should resolve this.
Dolby Vision content can have issues on some displays when using VCx or VC-2 PC Application modes with fast switching enabled. Disabling fast switching or switching to VC-2 Video mode should resolve the issue.
When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 1.2.7.1

Features

General

Added support for use of larger FPGAs in the OMNI-121.

Bug Fixes

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on an attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Cannot set the Ethernet interface to ‘Not Used’ if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
AT-OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 1.2.7

Features

General

Added FPGA model number and size to the System Information tab.
NTP server is now set to a default of pool.ntp.org, unless an NTP server is already specified.
Temperature data is now available through Telnet, SSH, or RS-232, using the Temperature command.
Supports option to configure SAP addresses.
Added the option to disable Telnet protocol from within the Network tab of the encoder/ decoder web server.

Encoder

Added AudioSapAlways command. Refer to the OmniStream API documention for argument syntax. Executing this command will send AES67 stream information, even when there is no source present (and AES67 is not being sent).

Decoder

Added support for fast-switching timeout interval.
Fast Switching now supports resolutions up to 1920×1200.
Output framerate can now be configured in addition to the output resolution. Available options are auto, 60 Hz, 50 Hz, and 30 Hz, except for the AT-OMNI-122, where options are auto and 30 Hz.
Added units argument to the VideoWallSize command. Arguments can now be specifed as millimeters, inches, or pixels. Refer to the OmniStream API documention for argument syntax.

Bug Fixes

General

Resolved an issue reading the I2C bus on some units, resulting in a 0 °C system temperature reading and loss of fan control. Note: Units reporting 0 °C prior to the update will need to be power cycled after the update to ensure these units report temperature correctly.
Resolved an issue where a failed firmware file transfer required a reboot in order to reattempt the upgrade.
Resolved an issue where an elevated die temperature would not generate an alarm.
Resolved an issue where channel count information for Dolby/DTS audio is incorrect. Note: if the audio info frame does not contain channel count information, the channel count will be shown as “N/A.”
Resolved an issue that would cause loss of serial control following reboot.

Encoder

Resolved an issue where encoders with ID buttons would not show a button slider on the System Information tab of the web pages.
Resolved an issue that could cause audio packet loss when used with Q-SYS Core DSPs that are multiple hops away.
Resolved an issue with video sync on some sources showing Dolby Vision content.
Resolved an issue that prevented an AES67 datapath alarm from clearing even after the issue is resolved.

Decoder

Resolved an issue on the AT-OMNI-122 where the video output can be corrupted when changing video wall settings on walls larger than 2×2.
Resolved an issue where output video resolutions are reported on the web server pages, even when there is no incoming video.
Resolved an issue where a decoder will not rejoin an AES67 stream following a power cycle.
Resolved an issue where a decoder will report that it is unable to decode a stream, even when no stream is present.
Resolved an issue where a decoder will not show the slate (with Slate mode set to Auto) when a stream is interrupted or the IP input is disabled.
Resolved an issue where a decoder would randomly drop AES67 audio.
Resolved an issue where a decoder might not correctly handle 7.1 channel LPCM audio from an Apple TV.
Resolved an issue where the decoder would not send the CEC display off command (if configured for automated display control) when the IP input is disabled or the multicast address is removed.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on an attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Cannot set the Ethernet interface to ‘Not Used’ if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
AT-OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 1.2.6

Features

Added Link Layer Discovery Protocol (LLDP) support. An “LLDP” menu item has been added, which reports information such as the chassis and port information. NOTE: In order for OmniStream to report this information, LLDP must be running on the network switch.
Added the EncGroupX CLI command, which supports Encoder grouping over Telnet / SSH. The command support the following arguments:

enable = configure session X to join group
disable = configure session X to leave group
active = configure session X to join and become the active group

Added audio tone generator option for both encoder and decoder. On the encoder, this option is found under the Session menu, and under the HDMI Output tab on the decoder.
SAP SDP has been extended to report the AUX stream, which is used for control signals.
R-Type only: Added VESA resolutions support.
OMNI-512 only: SAP announcement default settings for Session 1 and 2 is now disabled, and Session 3 and 4 is now enabled.
The default TTL PTP value has been changed to 8.
The default PTP Clock Class has been changed to 248.
On the decoder, the SAP listener has now been set to enabled, by default.
SAP announcements now support a categorization field. The default category is “Atlona”. The category can be set within the web server of the encoder.
Added 2560x1600p60 support.
Added 480i and 480p support.
Added 576i and 576p support.

Bug Fixes

General

Fixed an issue where if OmniStream boots without a DHCP server presence, the system will remain in Auto-IP. OmniStream will now continue searching for a DHCP server.
Distributing a 1366x768p60 source no longer experiences video quality issues.
Dual-channel units only: Fixed an issue where the client MAC address did not correspond to the MAC address stored within the header of the Ethernet frame.

Encoder

Fixed an issue where no audio was heard, if an AppleTV 4k was set to ‘Best Format’.
High-latency networks no longer cause PTP synchonization issues.

Decoder

Connecting a DVI display to a decoder allows video to be displayed. NOTE: Decoder resolution must be set “Auto”, in order for this to work.
AT-OMNI-122 only: 90 and 270 degree rotation options have been removed from the video wall Orientation drop-down list.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
There is no audio pass-through if an AppleTV 4k set to decode MCH LPCM audio. Workaround: Enable AppleTV 4k ‘Change Format’ or enable Dolby® Atmos® for downstream decoding of bitstream audio. Refer to https://support.apple.com/en-us/HT204069 for more information.
If LLDP is not running on attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.
Configuring the serial interface from CLI to TCPPROXY will require that the configuration settings be saved twice. This issue occurs after performing a factory reset or upgrading from older firmware to version 1.2.6 on an encoder or decoder.

Encoder

Cannot set the Ethernet interface to ‘Not Used’ if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
If power is lost or the decoder reboots, RS-232 display control commands will no longer be sent. Workaround: Click the Save button under the Serial Configuration window group.
OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 1.2.5

Features

Added support for Portrait Mode Video Wall with 90-degree and 270-degree display rotation (single channel decoders only).
Pro only: Encoders and decoders now support virtual reality resolution of 2160×1200 @ 90 Hz.
Dolby Vision support is built-in and does not require additional license.
Added HDR indicator in web interface, indicating when stream contains HDR content. This applies to both encoder HDMI and decoder IP/HDMI interfaces.
Decoder now reports video status of the incoming IP stream and HDMI output.
Expanded DSCP setting for both video and audio streams. By default, TCP/IP stream is best effort.
Added support for AT-OMNI-111-WP.

Bug Fixes

General

Hostname is preserved during a configuration import operation, and does not cause the factory hostname to be reset.

Encoder

Encoder IP stream is converted to YUV when subsampling is set to either 4:2:2 or 4:2:0, and occurs regardless of the Force YUV setting.
Improved validation during firmware and configuration upload.
Improved EDID input data validation.
Fixed an issue where PTP clock drift caused periodical audio drop when using AES67 streams.

Decoder

Fan RPM algorithm has been improved to decrease fan noise level.
Fixed an issue where the last frame was repeatedly displayed when the incoming IP stream was lost on 1080p displays.
When fast switching mode is enabled, changing input IP streams between HDR and non-HDR sources now works correctly.
Fixed an issue where PTP clock drift caused periodical audio drop when using AES67 streams.
Improved configuration validation to prevent color space toggling between RGB and YUV.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
When configuring video walls with more than two rows, the maximum decoder input resolution must not exceed 4K @ 30 Hz.

Encoder

Cannot set the Ethernet interface to ‘Not Used’ if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
On rare occurrences LG SE3D TVs experience lost HDMI sync with decoder during IP multicast stream switch. HDMI sync will recover automatically after short period of time.

Version 1.2.4

Features

General

Fast switching can now be enabled or disabled over Telnet and SSH.
The AnalogInputEnable, AnalogInputStatus, AnalogOutputEnable, and AnalogOutputStatus commands have been replaced by the AnalogPowerEnable and AnalogPowerStatus commands. Refer to the OmniStream API documentation for more information.

Bug Fixes

Encoder

Performing a soft reboot, when a 1080i source is connected, no longer results in a failed HDCP handshake.

Decoder

The fan RPM algorithm has been adjusted to reduce fan noise during the idle state.
Several displays have shown a momentary green frame when switching between multicast streams.
Output no longer randomly “drops out” when Fast Switching is enabled in video wall applications.
If Fast Switching is enabled, and Text/Slate Insertion is enabled, hot-plugging the HDMI cable no longer results in a loss of the HDMI output signal. Note that simultaneous use of both Fast Switching and Text/Slate Insertion is not supported in Version 1.2.4.
EDID parsing error of SunBrite displays no longer causes a factory-reset of the decoder.
In some instances, performing a hard power-cycle no longer results in corruption of the device configuration, which would require a factory-reset of the system.
The loss of the right channel audio (analog or digital), in rare instances, has been addressed.
“Crackling noise”, when using AES67 audio, no longer occurs on the analog audio output.
In PC Mode, when Fast Switching is enabled, switching between YUV and RGB streams no longer displays the output with a purple/green tint.
Fixed an issue where the output resolution remains at 1080p30 when Fast Switching is combined with a video wall application.
HDCP handshake with Panasonic PT-RZ970 no longer results in video sync issues during a power-on event of the projector.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.

Encoder

When using older DirecTV STB models that are having incompatibility issues, an ETU-SYNC must be used. Use the ETU-SYNC to learn the encoder EDID (not the display) and then place the ETU-SYNC between the source and the encoder.
When connecting an AT-ETU-SYNC to the OmniStream encoder, the encoder EDID should be learned and copied to the AT-ETU-SYNC.
When AES67 is enabled, the Ethernet interface cannot be set to “Not Used”.
Pro only: When streaming two video services over one Ethernet, only one session of AES67 is supported.
When a Lumens DC193 document camera is connected and powered-on, the output signal will drop for approximately one second.
HDMI compatibility issue with Nintendo® Switch. Workaround: Place an AT-UHD-SYNC or AT-ETU-SYNC between the encoder and the decoder.

Decoder

When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
Although Text Insertion, Logo Insertion, and Slate insertion are not supported when operating in Fast Switching mode, these configuration menus are still available through the web interface.
Single channel: When Fast Switching is enabled, output will be locked to 1080p60 and will scale and frame convert the incoming signal to match. This avoids renegotiation and allows source switching to be seamless.

Version 1.2.3

Features

General

Added support for AT-OMNI-111 Rev. J and AT-OMNI-112 Rev. K encoders.

Main improvements:

i. Firmware support for ID button on AT-OMNI-111 Rev. J.
ii. PCBA update for both single-channel and dual-channel encoders to improve HDMI Display Data Channel (DDC) behavior.

Added support for IR pass-through on serial port 1 for AT-OMNI-112 Rev. K and AT-OMNI-111 Rev. J.

Bug Fixes

Encoder

None.

Decoder

Fixed an issue where the output signal dropped randomly when Fast Switching mode was enabled in Video Wall mode.

Known Issues

General

Logo image is displayed at less than or equal to 30% of its original size, when output resolution is 3840×2160 @ 60 Hz (UHDp60).
When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.

Encoder

When using older DirecTV STB models that are having incompatibility issues, an ETU-SYNC must be used. Use the ETU-SYNC to learn the encoder EDID (not the display) and then place the ETU-SYNC between the source and the encoder.
HDMI inputs must be disconnected and the unit rebooted before the firmware upgrade process can be initialized.
When AES67 is enabled, the Ethernet interface cannot be set to “Not Used”.
Pro only: When streaming two video services over one Ethernet, only one session of AES67 is supported.
When a Lumens DC193 document camera is connected and powered-on, the output signal will drop for approximately one second.

Decoder

Although Text Insertion, Logo Insertion, and Slate insertion are not supported when operating in Fast Switching mode, these configuration menus are still available through the web interface.
When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.

Version 1.2.2

Features

General

OmniStreams now support Dolby Vision HDR up to 3840×2160 @ 60Hz 12-bit 4:2:0.
Local time zone can now be updated.

Dual Channel Pro Encoder

Encoders can now be daisy chained with only one Encoder being connected to the network switch.

Decoder

Fast Switching Option added

Single channel: Output will be locked to 1080p60 and will scale and frame convert the incoming signal to match. This avoids renegotiation and allows source switching to be seamless.
Dual channel: Output will be locked to 1080p30 and will scale and frame convert the incoming signal to match. This avoids renegotiation and allows sources to switch seamlessly.

Bug Fixes

Encoder

HDCP snow no longer displays before content when manually switching sources.
Images no longer blink on displays when the FEC matrix values set to greater than or equal to 7×7.
Audio now mutes when manually selecting slate insertion.
LG TVs no longer displays a green screen when the source (e.g. channel change on DTV STBs) is lost.
The video generator will now display when sub sampling is 4:2:0.
Logo image quality no longer drops when set to stretch mode on 3840×2160.
HDMI input loss no longer occurs after long use with a 4096×2160 distribution amplifier.
Unit now rolls to normal mode when the system is set to 802.1x/no RADIUS server.
Host and model names are not correctly displayed on the webGUI.
Signal is no longer lost when connected to a DirecTV H25 STB.
Text insertion is now configurable on Rev B units.
Video mode no longer displays as a configuration option when the unit does not support it (e.g. Rev B units).
Audio no longer has crackling noises when connected to an OmniStream 238.
AES67 grand master election now works when the PTP domain is greater than zero.
Audio no longer drops when connected to a DirecTV C51-100 STB.
Alarm status now correctly displays as active/inactive.
NTP server connections no longer cause time drift.
Improved stability of HDMI signal with DirecTV H24 when resolution is changed.
Telnet now allows for enabling and disabling AES67 functionality.

Decoder

Improved video wall functionality to display simultaneously across all outputs when selected.
LG TVs no longer display a green screen when the source is lost.
LG OLEDs no longer display a green screen randomly.
Unit now passes HDCP non-compliant signals to LG 65UH9500.
3840×2160 @ 60Hz slate insertion no longer results in incorrect colors displaying.
Unit no longer loses HDCP handshake with Sony displays.
Automatic slate insertion now works correctly.
HDCP snow no longer displays before content when manually switching sources.
Unit now rolls to normal mode when the system is set to 802.1x/no RADIUS server.
Video no longer blinks when auto slate insertion is enabled on 3840×2160 @ 60Hz.
HDCP 2.2 no longer shows in configuration when the unit does not support it.
System will now correctly change to 1920×1080 when selected in video wall mode.
AES67 audio now correctly passes when connected to a QSC Core 250i system.
Unit will no longer incorrectly loses its static IP and reverts to DHCP mode.
Analog audio now passes even when HDMI port gets disconnected.
Audio no longer drops when switching between AES67 and RTP streams.
Single Channel – Default configuration now correctly populates the multicast address on IP input 1 and IP input 3.

Version 1.2.1

Features

OmniStream Pro

HDMI 2.0 support.
HDCP 2.2 support.
Video mode – optimizes video quality to support motion-video content.
Supports High Dynamic Range (HDR): HDR10 and HLG.
IEEE 802.1X Device Authentication.
Full RS-232 over IP pass-through using TCP Proxy.
Audio over IP: Simulateous AES67 and OmniStream RTP audio pass-through.
IR Support: IR pass-through from encoder to decoder (upstream) or from decoder to encoder (downstream).
Encoder Grouping.
Video Wall Telnet API – Enables third-party control for configuring video walls using Telnet protocol.
High Bit Rate Audio – Supports pass-through of high bit rate audio formats: Dolby® Atmos®, Dolby True HD, DTS®:X, and DTS-HD Master Audio™.

OmniStream R-Type

Full RS-232 over IP pass-through using TCP Proxy.
Video Wall Telnet API – Enables third-party control for configuring video walls using Telnet protocol.
High Bit Rate Audio – Supports pass-through of high bit rate audio formats: Dolby® Atmos®, Dolby True HD, DTS®:X, and DTS-HD Master Audio™.

Bug Fixes

Encoder

For HDCP sources that are only capable of HDCP 1.4, the encoder HDCP mode must be forced to HDCP 1.4.
Setting AppleTV to “Best Available” audio results in no audio detected during movies.
Slate insertion doesn’t work on the encoder.
While HDR does pass correctly, the encoder’s HDR indicator doesn’t show HDR for some sources, such as Xbox One S/X, PS4 Pro, and DirecTV C61K-700.
To prevent VQ issues, Kaleidescape Strato should be set to “Use External Scaler” mode and set to 1080p. This prevents menus from rendering in UHD.
HBR audio formats (Dolby® Atmos®, Dolby TrueHD, DTS®:X, DTS-MA) were temporarily removed from encoder EDIDs
DirecTV STBs loses 720p as an option, forcing the use of 1080i for non-UHD channels.
1080i VQ needs improvement.
Video generator on encoder doesn’t work.
IR pass-through does not function.
WebGUI window for alarm descriptions is sometimes too small, resulting in truncated alarm messages.
VESA resolutions should not be available for R-Type.
Pro only: When both sessions are mapped to the same interface, audio from session 2 is corrupted.

Decoder

If dual sources are connected, one is UHDp60, and only one PoE is connected, the second input should not work and an alarm should be raised stating that dual PoE is needed.
Output drops when decoder is configured for ultra-low latency mode and UHD output.
HBR audio formats (Dolby Atmos, Dolby TrueHD, DTS:X, and DTS-MA) aren’t supported on the decoder.
Pro only: Pausing audio on PC sources sometimes triggers audio redundancy switching.
Infrequent drops with some 720p inputs.
Partial fix: Video wall size is limited to 5×5 within the web GUI. Larger wall sizes can be created over Telnet/API or using the Velocity Video Wall configurator.
Pro only: Polarity of analog input is wrong.
Enabling logo on the decoder with a UHDp60 source causes the output to blink and the unit becomes inaccessible.
Compressed audio from Kaleidescape Strato is unstable. The issue is not seen with PCM audio from the Strato.
Automatic bit depth reduction based on the sink’s EDID is done without any indication to the user.
Decoder audio downmix is missing “auto” mode which should function based on the EDID of the connected device.
Unit requires one extra reboot after an upgrade to get the decoder audio downmixing to work properly.
R-Type only: IR should only be allowed on serial port 2, but is also allowed on serial port 1.

Version 1

Factory firmware

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Control Drivers

Atlona Velocity	Atlona’s IP-based AV control and management
Date	06.25.18

3rd Party Control Systems

Control4	Control4 OmniStream™ 521 IP and RS-232 Control
File Size	2.2 MB
Date	08.21.19

Crestron	Crestron OmniStream™ 521 Lite IP Control
File Size	825 KB
Date	04.16.18

Elan	Not supported

RTI	Not supported

Savant

Not supported

URC	Not supported

Overview

Unsurpassed AV over IP Performance and Reliability over Gigabit Ethernet

Artifact-free graphics and video

OmniStream is powered by the advanced VCx codec which delivers 4K/60 4:4:4 from encode to decode, with pristine-quality presentation of computer-generated and fast-motion video content.

Ultra-fast switching

Designed for system expansion

The VCx codec is highly efficient, allowing numerous 4K and 1080p streams over 10 Gigabit uplinks between network switches. This is a powerful advantage when designing systems for scalability.

Additional Features

Thumbnail preview

View encoded source streams on a touch panel or web GUI before selecting a source for display.

Ethernet link testing

A built-in tool to evaluate integrity of the network infrastructure for your OmniStream system.

Power over Ethernet

OmniStream endpoints can be remotely powered by a network switch through standard PoE.

Network security

Industry-standard, network security features and protocols including HTTPS, SSH, and AES-128.

See more technical details

Videos

OmniStream 2.0 New Features

Introducing OmniStream 2.0, a major technology update with new features and performance capabilities.

OmniStream 2.0 Technology Update

A comprehensive overview of the new features and performance capabilities with OmniStream 2.0.

High Efficiency Coding

Learn about the benefits of highly efficient video coding over Gigabit Ethernet.

Fast Switching

Here is a demonstration of OmniStream’s fast switching capabilities.

Details

Easy to Configure, Simple to Manage

Product Compatibility

The OMNI-521 is compatible with the OMNI-512 encoder, as well as the OMNI-111, OMNI-111-WP, and OMNI-112 encoders.

Designed for Pro AV Integration

Ethernet Link Testing

Applications

Multi-room or multi-zone AV systems – OmniStream enables cost-effective system design, allowing the connection of any number of sources to any number of displays. 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.
High quality AV presentations – OmniStream delivers the uncompromising performance of traditional baseband video systems, making it ideal for applications where both image quality and low latency are crucial.

Atlona Academy Training and Certification

Certification is required for all new Atlona dealers wanting to sell OmniStream AV over IP products.

Features

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 decoder for HDMI output up to 4K/UHD, plus RS-232 or IR control pass-through

Decodes video, audio, and control, with the flexibility of receiving them together or from separate network sources
Allows wide-ranging versatility for integrators to design systems to specific requirements

Supports 4K/60 4:4:4 plus HDR formats

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 color

Advanced VCx codec

Delivers 4K/60 4:4:4 with artifact-free presentation of computer-generated content and fast-motion video
Ultra-low encode-to-decode latency less than 1 frame

High-efficiency coding

VCx codec allows numerous 4K streams over 10 Gigabit uplinks between network switches

Integrated high-quality scaler

OMNI-521 includes an integrated, high-performance scaling engine
Provides upscaling and downscaling for a wide array of 4K/UHD, HD, and VESA resolutions

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 Velocity Device Manager, allowing content to pass to non-compliant displays and teleconference systems. Protected content is not transmitted.

Ultra-fast switching between 4K/60 video streams*

Provides instantaneous and precise video and audio HDMI switching
Works between streams at different resolutions and frame rates
Ideal for mission-critical applications where stable, fast AV switching is required
* Logo / image display features and 1080i video are not supported.

Integrated Ethernet link testing

Tests integrity of the network infrastructure between encoders and decoders (cabling, terminations, switch, bandwidth)
Allows quick, easy verification or troubleshooting from the encoder and decoder web GUI – no need to visually check each display location

Thumbnail preview of encoded video streams

View encoder streams as thumbnails on a Velocity touch panel or through the web GUI
Ideal for previewing sources before selecting for display
Also ideal for validating system operation

Simplify integration with plug-and-play network switch compatibility

Streamline system setup by using Atlona Certified Switch configurations for popular models from Cisco^®, NETGEAR^®, and many others
NETGEAR switches also available from Atlona (United States and Canada only)
Saves installation time and costs without the need to manually configure a network switch

PoE (Power over Ethernet) powering

With PoE, decoders 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

Secure content distribution with AES-128 decryption

Decrypt AES-128 content from any OmniStream encoder
Ensures secure content delivery across the network

Supports industry-standard, network security features and protocols

HTTPS, Telnet, SSH, WebSockets with TLS, and AES-128 encryption

AES67-compatible

OmniStream supports industry standard, AES67-compatible networked audio streams from encoders and audio interfaces
Supports multi-channel PCM up to 7.1 channels

Video wall processing

Processing for video walls with portrait and landscape displays up to 16×16 @ 4K/30 and 2×2 @ 4K/60 with precision wall-tile alignment

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

EDID from a connected display can be copied and stored; EDID can also be assigned to a specific timing
Ensures desired audio formats and video resolutions are provided to the AV system

Audio processing and pass-through

Multi-channel 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

Display control

Supports IR, bidirectional RS-232, and CEC to control connected displays
Bidirectional TCP proxy enables RS-232 commands over TCP/IP

System management

Intuitive standalone web GUI
Velocity Device Manager – 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

Product Warranty

To view the product warranty, use the following link: https://atlona.com/warranty/

Specifications

Video
Signal	HDMI
Copy Protection	HDCP 2.2
UHD/HD/SD	4096×2160 (DCI) @ 30/24 Hz 3840×2160⁽¹⁾ (UHD) @ 60/50/24/25/30 Hz 1920x1080p @ 23.98/24/25/29.97/30/50/59.94/60 Hz	1920x1080i⁽²⁾ @ 25/29.97/30 Hz 1280x720p @ 30/50/59.94/60 Hz
VESA⁽³⁾	2560×1600 1920×1200 1680×1050 1600×1200 1600×900 1440×900 1400×1050	1366×768 1360×768 1280×1024 1280×800 1280×768 1152×768 1024×768
Color Space	YUV, RGB

Encoding
Density	Single decoding engine
Compression Format	VCx and VC-2 (SMPTE-2042)
Video Quality Optimization	User-selectable: PC Application or Video mode (VC-2 codec only)
Chroma Subsampling	Chroma	VCx	VC-2 Video
	4:4:4	Yes	No
	4:2:2	Yes	No
	4:2:0	Yes	Yes
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.
Output Resolution in Fast Switching Mode	Up to 4K60 (VCx) or 1080p60 (VC-2)

Audio
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, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
Bit Depth	Up to 24-bit

Protocols
Video Streaming	RTP
Audio Streaming	RTP, up to 7.1 channels AES67, up to LPCM 7.1 channels
Addressing	DHCP, static
Encryption	AES-128
QoS Tagging	RFC 2475
Discovery	Multicast DNS, LLDP, SAP
Management	HTTPS, SSH, Telnet, and WebSockets with TLS
IP Multicast	IGMPv2 and IGMPv3 support

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⁽⁴⁾	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).

Control
CEC	Supported and triggered from control systems and OmniStream encoders
RS-232	Device control and configuration; supports baud rates from 2400 to 9600 Bidirectional pass-through from control system to network Bidirectional TCP Proxy (RS-232 commands over IP)
IR	Pass-through from control system to network Pass-through from network to control system

Connectors
HDMI	1 – Type A, 19-pin, female, locking
ETHERNET⁽⁵⁾	1 – RJ45, 10/100/1000 Mbps
RS-232 / IR	1 – Euroblock, 6-pin (2 ports); RS-232 on port 1 only, IR on port 2 only

Indicators and controls
PWR	1 – LED, tricolor (red, amber, 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

Power
PoE	IEEE 802.3af
Consumption	Up to 12 W
BTU/h	40.9

Environmental	Fahrenheit	Celsius
Operating Temperature	+14 to +122 °F	-10 to +50 °C
Storage Temperature	+14 to +140 °F	-10 to +60 °C
Operating Humidity (RH)	20% to 95%, non-condensing
Maximum Operating Altitude	2000 meters
Cooling System	Front-to-rear airflow, temperature-controlled fans

Chassis	Inches		Millimeters
Dimensions (H x W x D)	1.34 x 8.19 x 4.41		34 x 208 x 112

Weight	Pounds		Kilograms
Unit	1.5		0.7

Certification
Device	CE, FCC, CB, RoHS

Compliance
NDAA-899	Yes
TAA	Yes

Warranty
Device	To view the product warranty, use the following link: https://atlona.com/warranty/

⁽¹⁾ Using VCx, streaming is supported up to 4K60 4:4:4. Using VC-2 Video Mode, 4K60 and 4K50 resolutions will be chroma subsampled to 4:2:0 before streaming.

⁽²⁾ Interlaced sources are passed-through without modification, and do not support scaling, video wall, logo insertion, text insertion, or fast switching.

⁽³⁾ All VESA resolutions are 60 Hz.

⁽⁴⁾ Slate insertion is limited to 1080p only.

⁽⁵⁾ Maximum distance per hop is 330 feet (100 meters), depending upon network configuration.

Diagrams

Light commercial AV – bars and restaurants

Digital signage

Resources

Documentation

	Datasheet
	OmniStream Solution Setup and Config Guide
	Installation Guide
	Manual
	CLI Command Set and JSON over WebSocket

Integration Note

	Symetrix Integration Note
	QSC Integration Note

Declaration of Conformity

	AT-OMNI-521
	CE AT-OMNI-521
	UK AT-OMNI-521

CAD File

AT-OMNI-521

Support

	Network Assignment Planner
	Product Engineering Document
	OmniStream IT Deployment Guide
	OmniStream Certified Network Switches
	JSON over WebSocket Schema
	OmniStream FAQs
	AV Over IP Glossary of Terms

Similar Products

Product	Description
AT-OMNI-121	Single-Channel Networked AV Decoder

Firmware

AT-OMNI-521 Firmware

Firmware	AT-OMNI-521 Firmware Version 2.0.3
File Size	102 MB
Date	08.21.24

Important! To ensure compatibility with OmniStream firmware version 2.0.0 and above, Velocity Device Manager must be running version 2.5.3 or greater.

Release Notes

Version 2.0.3

Features

General

Patched a vulnerability that could be exploited via special character insertion in the URL.
Updated the nginx server to get the latest security patches.
Updated the OpenSSH library to 9.8p1.
Updated the HDMI interface logic on encoders and decoders.

Bug Fixes

Encoder

Resolved compatibility issues with Apple Silicon-based devices.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Link test results may be inaccurate when an encoder is configured for dual streaming.
Encoders using a 1080p EDID might encounter issues with input video from an M1 or M2 Macbook using an Apple USB-C to HDMI adapter. A workaround is to use a 4K EDID and then enable scaling on either the encoder or decoder depending on the requirements of the system.
Cannot set the Ethernet interface to “Not Used” if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Previous Releases

Version 2.0.2

Bug Fixes

General

Resolved an issue where devices have an active link-local IP addresses even when assigned a static or DHCP IP address.

Encoder

Resolved an issue on the AT-OMNI-112 where the client MAC address does not correspond to the MAC address in the header of the Ethernet frame.

Decoder

Resolved several issues that could result in one or more displays in a videowall showing no content.
Resolved an issue where the decoder slate image would not be shown if the slate resolution does not match the decoder output resolution. Note: The slate resolution can be shown at a maximum of 1920×1080. When the output resolution of the decoder is set to higher than 1920×1080, the slate resolution will be fixed at 1920×1080.
Resolved an issue where the HDMI Output Framerate setting was not being honored. Note: the framerate setting applies in all operating modes and for all resolutions, except for frame rate conversion when using 4K output, in which case framerate conversion only applies if Fast Switching is enabled.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Link test results may be inaccurate when an encoder is configured for dual streaming.
Encoders using a 1080p EDID might encounter issues with input video from an M1 or M2 Macbook using an Apple USB-C to HDMI adapter. A workaround is to use a 4K EDID and then enable scaling on either the encoder or decoder depending on the requirements of the system.
Cannot set the Ethernet interface to “Not Used” if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

The use of Bezel Compensation in Videowall mode triggers a notification that the selected Videowall height is not supported. This notification is cosmetic in nature and does not reflect an actual problem.
The AT-OMNI-122, when running OmniStream 2.x, will only negotiate HDCP 1.4 on one of the two outputs.
When using the VCx codec with fast switching disabled, color flashes might be seen when switching streams. This can be resolved by enabling fast switching.
When switching a subframe within a multiview to an ip_input already in use on the multiview, the subframe showing that ip_input will blink momentarily.
Decoders configured to use the VCx codec and with fast switching disabled may see issues with certain Dell DVI displays. This can be resolved by enabling fast switching.
If fast switching is enabled with a timeout set to 0 seconds (infinite hold), if the timeout is then changed to a non-zero value, infinite hold remains. Rebooting the decoder will resolve this issue.
Decoders with fast switching and text insertion enabled may encounter issues with Epson projectors. Workaround options include disabling decoder text insertion or using the encoder for text insertion.
Moving a decoder between a display that does not support Dolby Vision and one that does support Dolby Vision might result in an issue on the output. Re-seating the HDMI cable should resolve this.
In some instances following a settings change to disable fast switching the HDMI output will fail to sync. Re-seating the HDMI cable should resolve this.
Dolby Vision content can have issues on some displays when using VCx or VC-2 PC Application modes with fast switching enabled. Disabling fast switching or switching to VC-2 Video mode should resolve the issue.
When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 2.0.1

Features

General

The maximum number of open Telnet and SSH connections to a unit is now 25.

Decoder

Enabling Video Wall on the decoder now automatically sets the Stretch/crop mode to “fullscreen”.

Bug Fixes

General

Resolved a memory leak issue when using the CLI and the connection does not get properly closed.

Encoder

Resolved an issue that caused test insertion to become distorted when the input resolution is 3840×2160 and the slate image is active.
Resolved an issue that caused the slate image to stream as a black image when the encode scaler is set to 3840×2160. NOTE: the slate image cannot be scaled to 3840×2160 in the encoder. If the scaler is set to this resolution, the slate image will be streamed at 1920×1080 when the slate is active.

Decoder

Resolved an issue that caused decoders configured for Video Wall to lock up when the incoming stream resolution changes.
Resolved an issue that could result the Interface field of IP Inputs being set to “N/A”.
Resolved an issue that caused decoders configured for Video Wall with an output resolution of “Auto” to select a 4K output resolution, which is not valid for Video Walls.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Link test results may be inaccurate when an encoder is configured for dual streaming.
Encoders using a 1080p EDID might encounter issues with input video from an M1 or M2 Macbook using an Apple USB-C to HDMI adapter. A workaround is to use a 4K EDID and then enable scaling on either the encoder or decoder depending on the requirements of the system.
Cannot set the Ethernet interface to “Not Used” if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When the decoder slate resolution and scaler output resolution differ from the incoming stream resolution, the slate may fail to display. A workaround is to the set the decoder output resolution to “Auto”.
The AT-OMNI-122, when running OmniStream 2.x, will only negotiate HDCP 1.4 on one of the two outputs.
When using the VCx codec with fast switching disabled, color flashes might be seen when switching streams. This can be resolved by enabling fast switching.
When switching a subframe within a multiview to an ip_input already in use on the multiview, the subframe showing that ip_input will blink momentarily.
Decoders configured to use the VCx codec and with fast switching disabled may see issues with certain Dell DVI displays. This can be resolved by enabling fast switching.
If fast switching is enabled with a timeout set to 0 seconds (infinite hold), if the timeout is then changed to a non-zero value, infinite hold remains. Rebooting the decoder will resolve this issue.
Decoders with fast switching and text insertion enabled may encounter issues with Epson projectors. Workaround options include disabling decoder text insertion or using the encoder for text insertion.
Moving a decoder between a display that does not support Dolby Vision and one that does support Dolby Vision might result in an issue on the output. Re-seating the HDMI cable should resolve this.
In some instances following a settings change to disable fast switching the HDMI output will fail to sync. Re-seating the HDMI cable should resolve this.
Dolby Vision content can have issues on some displays when using VCx or VC-2 PC Application modes with fast switching enabled. Disabling fast switching or switching to VC-2 Video mode should resolve the issue.
When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 2.0.0

Features

General

Release of the new VCx codec, which offers a number of improvements to the OmniStream platform:

Support for 4K60 4:4:4.
Support for 4K60 fast switching.
Support for OMNI-111 dual streaming.
Support for encoder thumbnails.
Support for decoder multiview.

Added support for Ethernet link testing.
Hardware revisions that had the serial number programmed in the factory will now display those on the web UI.
Numerous web interface improvements.

Encoder

The AT-OMNI-112 encoder now has SAP announcement enabled as part of the default configuration.
Scrambling is now enabled by default.

Decoder

Scrambling is now enabled by default.

Bug Fixes

Encoder

Resolved an issue that prevented the slate from automatically showing when the HDMI input is set to “Not used”.
Resolved an issue that caused audio distortion when using AES67.
The HDCPSetx command now accepts “off” as a parameter.
Resolved an issue where AES67 audio sent from an AT-OMNI-512 to a QSC Core 110f did not work.
Resolved an issue where the slate would not appear in Auto mode if text overlay was enabled.
Resolved an issue where the slate would not appear in Auto mode when the encoder input is set to “Not used”

Decoder

Resolved an issue where the decoder would not correctly handle changes between drop and non-drop frame rates with fast switching enabled.
Resolved an issue that would cause the web UI to hang if the decoder attempts to join a multicast address with an incorrect port number.
Resolved an issue where the decoder will report an output resolution even though no source or sink is connected.
Disconnecting the video source when fast switching is enabled no longer results in a corrupted last frame.
Resolved an issue where decoder would reboot if connected to a sink with multiple CEA extension video blocks.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Link test results may be inaccurate when an encoder is configured for dual streaming.
Encoders using a 1080p EDID might encounter issues with input video from an M1 or M2 Macbook using an Apple USB-C to HDMI adapter. A workaround is to use a 4K EDID and then enable scaling on either the encoder or decoder depending on the requirements of the system.
Cannot set the Ethernet interface to “Not Used” if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When the decoder slate resolution and scaler output resolution differ from the incoming stream resolution, the slate may fail to display. A workaround is to the set the decoder output resolution to “Auto”.
The AT-OMNI-122, when running OmniStream 2.x, will only negotiate HDCP 1.4 on one of the two outputs.
When using the VCx codec with fast switching disabled, color flashes might be seen when switching streams. This can be resolved by enabling fast switching.
When switching a subframe within a multiview to an ip_input already in use on the multiview, the subframe showing that ip_input will blink momentarily.
Decoders configured to use the VCx codec and with fast switching disabled may see issues with certain Dell DVI displays. This can be resolved by enabling fast switching.
If fast switching is enabled with a timeout set to 0 seconds (infinite hold), if the timeout is then changed to a non-zero value, infinite hold remains. Rebooting the decoder will resolve this issue.
Decoders with fast switching and text insertion enabled may encounter issues with Epson projectors. Workaround options include disabling decoder text insertion or using the encoder for text insertion.
Moving a decoder between a display that does not support Dolby Vision and one that does support Dolby Vision might result in an issue on the output. Re-seating the HDMI cable should resolve this.
In some instances following a settings change to disable fast switching the HDMI output will fail to sync. Re-seating the HDMI cable should resolve this.
Dolby Vision content can have issues on some displays when using VCx or VC-2 PC Application modes with fast switching enabled. Disabling fast switching or switching to VC-2 Video mode should resolve the issue.
When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 1.2.7.1

Features

General

Added support for use of larger FPGAs in the OMNI-121.

Bug Fixes

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on an attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Cannot set the Ethernet interface to ‘Not Used’ if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
AT-OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 1.2.7

Features

General

Added FPGA model number and size to the System Information tab.
NTP server is now set to a default of pool.ntp.org, unless an NTP server is already specified.
Temperature data is now available through Telnet, SSH, or RS-232, using the Temperature command.
Supports option to configure SAP addresses.
Added the option to disable Telnet protocol from within the Network tab of the encoder/ decoder web server.

Encoder

Added AudioSapAlways command. Refer to the OmniStream API documention for argument syntax. Executing this command will send AES67 stream information, even when there is no source present (and AES67 is not being sent).

Decoder

Added support for fast-switching timeout interval.
Fast Switching now supports resolutions up to 1920×1200.
Output framerate can now be configured in addition to the output resolution. Available options are auto, 60 Hz, 50 Hz, and 30 Hz, except for the AT-OMNI-122, where options are auto and 30 Hz.
Added units argument to the VideoWallSize command. Arguments can now be specifed as millimeters, inches, or pixels. Refer to the OmniStream API documention for argument syntax.

Bug Fixes

General

Resolved an issue reading the I2C bus on some units, resulting in a 0 °C system temperature reading and loss of fan control. Note: Units reporting 0 °C prior to the update will need to be power cycled after the update to ensure these units report temperature correctly.
Resolved an issue where a failed firmware file transfer required a reboot in order to reattempt the upgrade.
Resolved an issue where an elevated die temperature would not generate an alarm.
Resolved an issue where channel count information for Dolby/DTS audio is incorrect. Note: if the audio info frame does not contain channel count information, the channel count will be shown as “N/A.”
Resolved an issue that would cause loss of serial control following reboot.

Encoder

Resolved an issue where encoders with ID buttons would not show a button slider on the System Information tab of the web pages.
Resolved an issue that could cause audio packet loss when used with Q-SYS Core DSPs that are multiple hops away.
Resolved an issue with video sync on some sources showing Dolby Vision content.
Resolved an issue that prevented an AES67 datapath alarm from clearing even after the issue is resolved.

Decoder

Resolved an issue on the AT-OMNI-122 where the video output can be corrupted when changing video wall settings on walls larger than 2×2.
Resolved an issue where output video resolutions are reported on the web server pages, even when there is no incoming video.
Resolved an issue where a decoder will not rejoin an AES67 stream following a power cycle.
Resolved an issue where a decoder will report that it is unable to decode a stream, even when no stream is present.
Resolved an issue where a decoder will not show the slate (with Slate mode set to Auto) when a stream is interrupted or the IP input is disabled.
Resolved an issue where a decoder would randomly drop AES67 audio.
Resolved an issue where a decoder might not correctly handle 7.1 channel LPCM audio from an Apple TV.
Resolved an issue where the decoder would not send the CEC display off command (if configured for automated display control) when the IP input is disabled or the multicast address is removed.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
If LLDP is not running on an attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.

Encoder

Cannot set the Ethernet interface to ‘Not Used’ if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
AT-OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 1.2.6

Features

Added Link Layer Discovery Protocol (LLDP) support. An “LLDP” menu item has been added, which reports information such as the chassis and port information. NOTE: In order for OmniStream to report this information, LLDP must be running on the network switch.
Added the EncGroupX CLI command, which supports Encoder grouping over Telnet / SSH. The command support the following arguments:

enable = configure session X to join group
disable = configure session X to leave group
active = configure session X to join and become the active group

Added audio tone generator option for both encoder and decoder. On the encoder, this option is found under the Session menu, and under the HDMI Output tab on the decoder.
SAP SDP has been extended to report the AUX stream, which is used for control signals.
R-Type only: Added VESA resolutions support.
OMNI-512 only: SAP announcement default settings for Session 1 and 2 is now disabled, and Session 3 and 4 is now enabled.
The default TTL PTP value has been changed to 8.
The default PTP Clock Class has been changed to 248.
On the decoder, the SAP listener has now been set to enabled, by default.
SAP announcements now support a categorization field. The default category is “Atlona”. The category can be set within the web server of the encoder.
Added 2560x1600p60 support.
Added 480i and 480p support.
Added 576i and 576p support.

Bug Fixes

General

Fixed an issue where if OmniStream boots without a DHCP server presence, the system will remain in Auto-IP. OmniStream will now continue searching for a DHCP server.
Distributing a 1366x768p60 source no longer experiences video quality issues.
Dual-channel units only: Fixed an issue where the client MAC address did not correspond to the MAC address stored within the header of the Ethernet frame.

Encoder

Fixed an issue where no audio was heard, if an AppleTV 4k was set to ‘Best Format’.
High-latency networks no longer cause PTP synchonization issues.

Decoder

Connecting a DVI display to a decoder allows video to be displayed. NOTE: Decoder resolution must be set “Auto”, in order for this to work.
AT-OMNI-122 only: 90 and 270 degree rotation options have been removed from the video wall Orientation drop-down list.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
There is no audio pass-through if an AppleTV 4k set to decode MCH LPCM audio. Workaround: Enable AppleTV 4k ‘Change Format’ or enable Dolby® Atmos® for downstream decoding of bitstream audio. Refer to https://support.apple.com/en-us/HT204069 for more information.
If LLDP is not running on attached network switch, then the LLDP menu page will appear to be continuously loading. This issue does not affect other menus within the web server. Workaround: If LLDP information is required, enable it on the network switch, globally or per-interface.
Configuring the serial interface from CLI to TCPPROXY will require that the configuration settings be saved twice. This issue occurs after performing a factory reset or upgrading from older firmware to version 1.2.6 on an encoder or decoder.

Encoder

Cannot set the Ethernet interface to ‘Not Used’ if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
If power is lost or the decoder reboots, RS-232 display control commands will no longer be sent. Workaround: Click the Save button under the Serial Configuration window group.
OMNI-122 only: When initially configuring a video wall larger than 2×2, the HDMI output video will be corrupted. Workaround: Power-cycling the decoder to resolve the issue.

Version 1.2.5

Features

Added support for Portrait Mode Video Wall with 90-degree and 270-degree display rotation (single channel decoders only).
Pro only: Encoders and decoders now support virtual reality resolution of 2160×1200 @ 90 Hz.
Dolby Vision support is built-in and does not require additional license.
Added HDR indicator in web interface, indicating when stream contains HDR content. This applies to both encoder HDMI and decoder IP/HDMI interfaces.
Decoder now reports video status of the incoming IP stream and HDMI output.
Expanded DSCP setting for both video and audio streams. By default, TCP/IP stream is best effort.
Added support for AT-OMNI-111-WP.

Bug Fixes

General

Hostname is preserved during a configuration import operation, and does not cause the factory hostname to be reset.

Encoder

Encoder IP stream is converted to YUV when subsampling is set to either 4:2:2 or 4:2:0, and occurs regardless of the Force YUV setting.
Improved validation during firmware and configuration upload.
Improved EDID input data validation.
Fixed an issue where PTP clock drift caused periodical audio drop when using AES67 streams.

Decoder

Fan RPM algorithm has been improved to decrease fan noise level.
Fixed an issue where the last frame was repeatedly displayed when the incoming IP stream was lost on 1080p displays.
When fast switching mode is enabled, changing input IP streams between HDR and non-HDR sources now works correctly.
Fixed an issue where PTP clock drift caused periodical audio drop when using AES67 streams.
Improved configuration validation to prevent color space toggling between RGB and YUV.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.
When configuring video walls with more than two rows, the maximum decoder input resolution must not exceed 4K @ 30 Hz.

Encoder

Cannot set the Ethernet interface to ‘Not Used’ if AES67 is enabled on the session.
Pro only: When transporting two video streams over a single Ethernet cable, only one AES67 session is supported.

Decoder

When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
On rare occurrences LG SE3D TVs experience lost HDMI sync with decoder during IP multicast stream switch. HDMI sync will recover automatically after short period of time.

Version 1.2.4

Features

General

Fast switching can now be enabled or disabled over Telnet and SSH.
The AnalogInputEnable, AnalogInputStatus, AnalogOutputEnable, and AnalogOutputStatus commands have been replaced by the AnalogPowerEnable and AnalogPowerStatus commands. Refer to the OmniStream API documentation for more information.

Bug Fixes

Encoder

Performing a soft reboot, when a 1080i source is connected, no longer results in a failed HDCP handshake.

Decoder

The fan RPM algorithm has been adjusted to reduce fan noise during the idle state.
Several displays have shown a momentary green frame when switching between multicast streams.
Output no longer randomly “drops out” when Fast Switching is enabled in video wall applications.
If Fast Switching is enabled, and Text/Slate Insertion is enabled, hot-plugging the HDMI cable no longer results in a loss of the HDMI output signal. Note that simultaneous use of both Fast Switching and Text/Slate Insertion is not supported in Version 1.2.4.
EDID parsing error of SunBrite displays no longer causes a factory-reset of the decoder.
In some instances, performing a hard power-cycle no longer results in corruption of the device configuration, which would require a factory-reset of the system.
The loss of the right channel audio (analog or digital), in rare instances, has been addressed.
“Crackling noise”, when using AES67 audio, no longer occurs on the analog audio output.
In PC Mode, when Fast Switching is enabled, switching between YUV and RGB streams no longer displays the output with a purple/green tint.
Fixed an issue where the output resolution remains at 1080p30 when Fast Switching is combined with a video wall application.
HDCP handshake with Panasonic PT-RZ970 no longer results in video sync issues during a power-on event of the projector.

Known Issues

General

When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.

Encoder

When using older DirecTV STB models that are having incompatibility issues, an ETU-SYNC must be used. Use the ETU-SYNC to learn the encoder EDID (not the display) and then place the ETU-SYNC between the source and the encoder.
When connecting an AT-ETU-SYNC to the OmniStream encoder, the encoder EDID should be learned and copied to the AT-ETU-SYNC.
When AES67 is enabled, the Ethernet interface cannot be set to “Not Used”.
Pro only: When streaming two video services over one Ethernet, only one session of AES67 is supported.
When a Lumens DC193 document camera is connected and powered-on, the output signal will drop for approximately one second.
HDMI compatibility issue with Nintendo® Switch. Workaround: Place an AT-UHD-SYNC or AT-ETU-SYNC between the encoder and the decoder.

Decoder

When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.
Although Text Insertion, Logo Insertion, and Slate insertion are not supported when operating in Fast Switching mode, these configuration menus are still available through the web interface.
Single channel: When Fast Switching is enabled, output will be locked to 1080p60 and will scale and frame convert the incoming signal to match. This avoids renegotiation and allows source switching to be seamless.

Version 1.2.3

Features

General

Added support for AT-OMNI-111 Rev. J and AT-OMNI-112 Rev. K encoders.

Main improvements:

i. Firmware support for ID button on AT-OMNI-111 Rev. J.
ii. PCBA update for both single-channel and dual-channel encoders to improve HDMI Display Data Channel (DDC) behavior.

Added support for IR pass-through on serial port 1 for AT-OMNI-112 Rev. K and AT-OMNI-111 Rev. J.

Bug Fixes

Encoder

None.

Decoder

Fixed an issue where the output signal dropped randomly when Fast Switching mode was enabled in Video Wall mode.

Known Issues

General

Logo image is displayed at less than or equal to 30% of its original size, when output resolution is 3840×2160 @ 60 Hz (UHDp60).
When an Apple TV is the source, Dolby Vision will not pass the correct colors to a TCL-brand TV.

Encoder

When using older DirecTV STB models that are having incompatibility issues, an ETU-SYNC must be used. Use the ETU-SYNC to learn the encoder EDID (not the display) and then place the ETU-SYNC between the source and the encoder.
HDMI inputs must be disconnected and the unit rebooted before the firmware upgrade process can be initialized.
When AES67 is enabled, the Ethernet interface cannot be set to “Not Used”.
Pro only: When streaming two video services over one Ethernet, only one session of AES67 is supported.
When a Lumens DC193 document camera is connected and powered-on, the output signal will drop for approximately one second.

Decoder

Although Text Insertion, Logo Insertion, and Slate insertion are not supported when operating in Fast Switching mode, these configuration menus are still available through the web interface.
When using the external power supply, the unit will not connect to a PoE enabled Cisco Catalyst 2960-X.
Switching to and from Video Wall mode, when operating HDCP 1.4 on dual-channel units, will take up to 15 seconds to display video.
Video wall sizes larger than 8×8 are only supported through AMS or Velocity.
Purple vertical lines may appear in the stream. Workaround: re-subscribe to the stream to fix the issue.

Version 1.2.2

Features

General

OmniStreams now support Dolby Vision HDR up to 3840×2160 @ 60Hz 12-bit 4:2:0.
Local time zone can now be updated.

Dual Channel Pro Encoder

Encoders can now be daisy chained with only one Encoder being connected to the network switch.

Decoder

Fast Switching Option added

Single channel: Output will be locked to 1080p60 and will scale and frame convert the incoming signal to match. This avoids renegotiation and allows source switching to be seamless.
Dual channel: Output will be locked to 1080p30 and will scale and frame convert the incoming signal to match. This avoids renegotiation and allows sources to switch seamlessly.

Bug Fixes

Encoder

HDCP snow no longer displays before content when manually switching sources.
Images no longer blink on displays when the FEC matrix values set to greater than or equal to 7×7.
Audio now mutes when manually selecting slate insertion.
LG TVs no longer displays a green screen when the source (e.g. channel change on DTV STBs) is lost.
The video generator will now display when sub sampling is 4:2:0.
Logo image quality no longer drops when set to stretch mode on 3840×2160.
HDMI input loss no longer occurs after long use with a 4096×2160 distribution amplifier.
Unit now rolls to normal mode when the system is set to 802.1x/no RADIUS server.
Host and model names are not correctly displayed on the webGUI.
Signal is no longer lost when connected to a DirecTV H25 STB.
Text insertion is now configurable on Rev B units.
Video mode no longer displays as a configuration option when the unit does not support it (e.g. Rev B units).
Audio no longer has crackling noises when connected to an OmniStream 238.
AES67 grand master election now works when the PTP domain is greater than zero.
Audio no longer drops when connected to a DirecTV C51-100 STB.
Alarm status now correctly displays as active/inactive.
NTP server connections no longer cause time drift.
Improved stability of HDMI signal with DirecTV H24 when resolution is changed.
Telnet now allows for enabling and disabling AES67 functionality.

Decoder

Improved video wall functionality to display simultaneously across all outputs when selected.
LG TVs no longer display a green screen when the source is lost.
LG OLEDs no longer display a green screen randomly.
Unit now passes HDCP non-compliant signals to LG 65UH9500.
3840×2160 @ 60Hz slate insertion no longer results in incorrect colors displaying.
Unit no longer loses HDCP handshake with Sony displays.
Automatic slate insertion now works correctly.
HDCP snow no longer displays before content when manually switching sources.
Unit now rolls to normal mode when the system is set to 802.1x/no RADIUS server.
Video no longer blinks when auto slate insertion is enabled on 3840×2160 @ 60Hz.
HDCP 2.2 no longer shows in configuration when the unit does not support it.
System will now correctly change to 1920×1080 when selected in video wall mode.
AES67 audio now correctly passes when connected to a QSC Core 250i system.
Unit will no longer incorrectly loses its static IP and reverts to DHCP mode.
Analog audio now passes even when HDMI port gets disconnected.
Audio no longer drops when switching between AES67 and RTP streams.
Single Channel – Default configuration now correctly populates the multicast address on IP input 1 and IP input 3.

Version 1.2.1

Features

OmniStream Pro

HDMI 2.0 support.
HDCP 2.2 support.
Video mode – optimizes video quality to support motion-video content.
Supports High Dynamic Range (HDR): HDR10 and HLG.
IEEE 802.1X Device Authentication.
Full RS-232 over IP pass-through using TCP Proxy.
Audio over IP: Simulateous AES67 and OmniStream RTP audio pass-through.
IR Support: IR pass-through from encoder to decoder (upstream) or from decoder to encoder (downstream).
Encoder Grouping.
Video Wall Telnet API – Enables third-party control for configuring video walls using Telnet protocol.
High Bit Rate Audio – Supports pass-through of high bit rate audio formats: Dolby® Atmos®, Dolby True HD, DTS®:X, and DTS-HD Master Audio™.

OmniStream R-Type

Full RS-232 over IP pass-through using TCP Proxy.
Video Wall Telnet API – Enables third-party control for configuring video walls using Telnet protocol.
High Bit Rate Audio – Supports pass-through of high bit rate audio formats: Dolby® Atmos®, Dolby True HD, DTS®:X, and DTS-HD Master Audio™.

Bug Fixes

Encoder

For HDCP sources that are only capable of HDCP 1.4, the encoder HDCP mode must be forced to HDCP 1.4.
Setting AppleTV to “Best Available” audio results in no audio detected during movies.
Slate insertion doesn’t work on the encoder.
While HDR does pass correctly, the encoder’s HDR indicator doesn’t show HDR for some sources, such as Xbox One S/X, PS4 Pro, and DirecTV C61K-700.
To prevent VQ issues, Kaleidescape Strato should be set to “Use External Scaler” mode and set to 1080p. This prevents menus from rendering in UHD.
HBR audio formats (Dolby® Atmos®, Dolby TrueHD, DTS®:X, DTS-MA) were temporarily removed from encoder EDIDs
DirecTV STBs loses 720p as an option, forcing the use of 1080i for non-UHD channels.
1080i VQ needs improvement.
Video generator on encoder doesn’t work.
IR pass-through does not function.
WebGUI window for alarm descriptions is sometimes too small, resulting in truncated alarm messages.
VESA resolutions should not be available for R-Type.
Pro only: When both sessions are mapped to the same interface, audio from session 2 is corrupted.

Decoder

If dual sources are connected, one is UHDp60, and only one PoE is connected, the second input should not work and an alarm should be raised stating that dual PoE is needed.
Output drops when decoder is configured for ultra-low latency mode and UHD output.
HBR audio formats (Dolby Atmos, Dolby TrueHD, DTS:X, and DTS-MA) aren’t supported on the decoder.
Pro only: Pausing audio on PC sources sometimes triggers audio redundancy switching.
Infrequent drops with some 720p inputs.
Partial fix: Video wall size is limited to 5×5 within the web GUI. Larger wall sizes can be created over Telnet/API or using the Velocity Video Wall configurator.
Pro only: Polarity of analog input is wrong.
Enabling logo on the decoder with a UHDp60 source causes the output to blink and the unit becomes inaccessible.
Compressed audio from Kaleidescape Strato is unstable. The issue is not seen with PCM audio from the Strato.
Automatic bit depth reduction based on the sink’s EDID is done without any indication to the user.
Decoder audio downmix is missing “auto” mode which should function based on the EDID of the connected device.
Unit requires one extra reboot after an upgrade to get the decoder audio downmixing to work properly.
R-Type only: IR should only be allowed on serial port 2, but is also allowed on serial port 1.

Version 1

Factory firmware

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Control Drivers

Atlona Velocity	Atlona’s IP-based AV control and management
Date	06.25.18

3rd Party Control Systems

Control4	Control4 OmniStream™ 521 IP and RS-232 Control
File Size	2.2 MB
Date	08.21.19

Crestron	Crestron OmniStream™ 521 Lite IP Control
File Size	825 KB
Date	04.16.18

Elan	Not supported

RTI	Not supported

Savant

Not supported

URC	Not supported

AT-OMNI-521 *** Discontinued ***

AT-OMNI-521 *** Discontinued ***

AT-OMNI-521

Unsurpassed AV over IP Performance and Reliability over Gigabit Ethernet

Artifact-free graphics and video

Ultra-fast switching

Designed for system expansion

Videos

OmniStream 2.0 New Features

OmniStream 2.0 Technology Update

High Efficiency Coding

Fast Switching

Details

Easy to Configure, Simple to Manage

Product Compatibility

Designed for Pro AV Integration

Ethernet Link Testing

Applications

Atlona Academy Training and Certification

Features

Specifications

Diagrams

Light commercial AV – bars and restaurants

Digital signage

Resources

Documentation

Integration Note

Declaration of Conformity

CAD File

Support

Related Products

Related Products

Similar Products

AT-OMNI-521 Firmware

Release Notes

Features

Bug Fixes

Known Issues

Bug Fixes

Known Issues

Features

Bug Fixes

Known Issues

Features

Bug Fixes

Known Issues

Features

Bug Fixes

Features

Bug Fixes

Known Issues

Features

Bug Fixes

Known Issues

Features

Bug Fixes

Known Issues

Features

Bug Fixes

Known Issues

Features

Bug Fixes

Known Issues

Features

Bug Fixes

Features

Bug Fixes

Sign up for updates

Control Drivers

3rd Party Control Systems

Unsurpassed AV over IP Performance and Reliability over Gigabit Ethernet

Artifact-free graphics and video

Ultra-fast switching

Designed for system expansion

Videos

OmniStream 2.0 New Features

OmniStream 2.0 Technology Update

High Efficiency Coding

Fast Switching

Details

AT-OMNI-521 * Discontinued *

AT-OMNI-521 * Discontinued *