Atlona AT-OMNI-121 Omni Single Channel OmniStream AVoIP Decoder

Product Overview

The Atlona AT-OMNI-121 is a single-channel networked AV over IP decoder designed for enterprise-grade 4K/UHD video distribution over standard Gigabit Ethernet infrastructure. Powered by the advanced VCx codec, this OmniStream AVoIP decoder delivers artifact-free 4K/60 4:4:4 HDMI output with ultra-low latency less than one frame — making it an ideal AV over IP decoder for corporate campuses, university environments, and large-scale multi-display installations. The AT-OMNI-121 supports HDCP 2.2, HDR10, Dolby Vision, HLG, and industry-standard network security protocols including IEEE 802.1x and AES-128 encryption.

Product Description

The Atlona AT-OMNI-121 is part of the OmniStream AV over IP product family, engineered for flexible and scalable distribution of high-resolution video and audio across standard, off-the-shelf Gigabit Ethernet networks. At its core is the proprietary VCx codec, which supports 4K/60 4:4:4 chroma sampling from encode to decode with pristine image quality — preserving every detail in computer-generated content and fast-motion video alike. Ultra-fast switching allows transitions between 4K/60 streams from OmniStream encoders in less than half a second, even when streams differ in resolution or frame rate. The decoder supports multiview window processing, enabling up to four simultaneous streams from AT-OMNI-111 encoders to be displayed on a single screen without the need for a dedicated windowing processor. The OMNI-121 is housed in a compact half-width rack enclosure with front-to-back airflow, designed for high-density deployments. PoE (Power over Ethernet) powering simplifies installation by eliminating the need for local AC outlets at each decoder location. EDID management, aspect ratio controls, logo overlay, and full-screen slate insertion provide advanced integration and presentation options. Built-in Ethernet link testing allows technicians to verify network infrastructure integrity directly from the encoder and decoder web GUI. AES-128 encryption and IEEE 802.1x authentication ensure content security across enterprise networks. The OMNI-121 is compatible with Atlona Velocity Device Manager for centralized configuration, monitoring, and firmware management of OmniStream systems at any scale.

Key Features

• VCx Codec with 4K/60 4:4:4 — Delivers artifact-free, ultra-low-latency video from encode to decode with less than one frame of latency at 1080p/60.
• HDR Support — Compatible with HDR10 at 60 Hz (10-bit), HLG for broadcast services, and Dolby Vision at 60 Hz (12-bit color).
• Ultra-Fast Switching — Transitions between 4K/60 video streams in under half a second, including streams at different resolutions and frame rates.
• Multiview Window Processing — Ingests up to four streams from AT-OMNI-111 encoders and displays them simultaneously on a single screen.
• Power over Ethernet (PoE) — IEEE 802.3af PoE support allows the decoder to be powered remotely from a PoE-capable network switch, eliminating local AC power requirements.
• HDCP 2.2 Compliance — Fully adheres to the latest HDCP 2.2 specification; HDCP can be selectively disabled via Velocity Device Manager for non-compliant display environments.
• AES-128 Encryption and IEEE 802.1x Authentication — Meets enterprise IT security requirements for secure networked AV content delivery.
• Integrated High-Performance Scaler — Supports upscaling and downscaling across 4K/UHD, HD, and VESA resolutions for display compatibility flexibility.
• Networked AV Redundancy with FEC — Monitors AV streams and automatically switches to a backup stream on packet loss; SMPTE-standard Forward Error Correction ensures reliable delivery in large-scale deployments.
• Video Wall Processing — Supports video wall configurations up to 16×16 at 4K/30 and 2×2 at 4K/60 with precision tile alignment.
• Encoder Thumbnail Preview — View encoded source streams as thumbnails on a Velocity touch panel or web GUI before selecting a source for display.
• Velocity Device Manager Integration — Centralized web-based platform for discovery, configuration, routing, monitoring, and firmware updates across all OmniStream endpoints.

Typical Applications

• Enterprise campus-wide AV distribution over existing Gigabit LAN infrastructure
• University lecture halls and divisible classroom environments requiring flexible multi-source display
• Corporate meeting rooms and conference centers with centrally managed multi-display systems
• Houses of worship and performing arts centers utilizing IMAG (image magnification) with ultra-low latency
• Digital signage networks distributing 4K content to multiple displays across a facility
• Overflow rooms requiring picture-in-picture or multiview from main venue encoders
• Government and military facilities requiring secure, encrypted AV content distribution
• Video wall installations in lobbies, control rooms, and command centers

Technical Specifications

Frequently Asked Questions

Q: What encoders are compatible with the AT-OMNI-121?

The AT-OMNI-121 is compatible with the AT-OMNI-111, AT-OMNI-111-WP, AT-OMNI-112, and AT-OMNI-512 encoders. Multiview window processing specifically requires AT-OMNI-111 encoders.

Q: Does the AT-OMNI-121 require a dedicated AV network switch?

No. The OMNI-121 is designed to operate over standard, off-the-shelf Gigabit Ethernet switches. Atlona provides a list of certified switch configurations for popular models from Cisco, NETGEAR, and others to simplify setup and reduce installation time.

Q: Can the AT-OMNI-121 be powered without a local AC outlet?

Yes. The OMNI-121 supports IEEE 802.3af Power over Ethernet (PoE), allowing it to be powered directly from a compatible PoE network switch. An optional external 48 V DC power supply (AT-PS-48083-C) is available when the analog audio interface is required.

Q: What video wall configurations does the AT-OMNI-121 support?

The AT-OMNI-121 supports video wall processing for configurations up to 16×16 at 4K/30 Hz and 2×2 at 4K/60 Hz, with precision wall-tile alignment capabilities built into the decoder.

Q: How is the AT-OMNI-121 managed in a large installation?

The OMNI-121 is managed through Atlona Velocity Device Manager, which provides automatic network device discovery, virtual AV routing configuration, continuous system monitoring, event logging, multi-device firmware updates, and remote device control from a standard web browser.

Q: Does the AT-OMNI-121 support encrypted content delivery?

Yes. The OMNI-121 supports AES-128 decryption for secure content streams from OmniStream encoders, and also supports IEEE 802.1x network authentication (PEAP/MSCHAPv2 or EAP-TLS) for enterprise network security compliance.

Q: What is the switching speed between 4K/60 video streams?

The AT-OMNI-121 transitions between 4K/60 video streams in less than half a second. Fast switching operates between streams at different resolutions and frame rates, making it suitable for mission-critical AV applications.