Harmonic Redefines the Economics of Video Playout with New Spectrum X Plus Media Server

Advanced Media Server Delivers Double the Channel Density at Half the Cost per Channel of Previous Generations

SAN JOSE, Calif. - March 12, 2026 - Harmonic (NASDAQ: HLIT) today announced Spectrum X Plus, the newest generation of its Spectrum X media server, offering double the channel density of previous generations. Spectrum X Plus dramatically simplifies video ingest and playout functions for broadcasters and content owners, significantly lowering the total cost per channel for broadcast delivery. Spectrum X Plus strengthens Harmonic's leadership in playout-to-delivery solutions by enabling broadcasters to deploy high performance playout infrastructure on premises, in the cloud with Harmonic's VOS 360 Media SaaS, and in hybrid environments.

As broadcasters face growing cost pressures and increasingly complex workflows, Spectrum X Plus provides the flexibility, performance and future-ready architecture they need to modernize ingest, production and playout operations. said Stephane Cloirec, vice president, video appliance and software product management at Harmonic. With Spectrum X Plus, we're responding to customer demand for higher channel density and lower cost per channel without compromising the outstanding quality and reliability that Harmonic solutions are known for. The next-generation media server also paves the way for future integration of AI-based applications such as Harmonic's AI orchestration service.

Efficiency Gains with Lower Cost Per Channel Offering up to eight HD channels or two UHD channels per server, Spectrum X Plus significantly reduces rack space, power consumption and operating costs for broadcasters and content owners. The high-performance baseband video server supports multi-channel ingest, studio and news production, channel-in-a-box and integrated playout workflows.

Advanced Capabilities for Enhanced Video Playout

Spectrum X Plus streamlines video playout with integrated onboard graphics, audio loudness control, MCR switching and subtitle insertion. The media server also provides innovative capabilities for next-generation production including support for UHD workflows such as 3D

LUT-based HDR conversions, immersive audio formats such as Dolby Atmos and MPEG-H as well as multiple resolutions, frame rates and codec formats.

Seamless Transition to IP

Built on a flexible, software-based architecture, Spectrum X Plus eliminates the constraints of traditional hardware-centric systems. The next-generation media server enhances performance for SMPTE ST 2110 environments, supporting SDI and SMPTE ST 2110 IP I/O, or hybrid configurations. This advanced feature enables broadcasters to transition seamlessly from traditional SDI to fully IP-based workflows.

Streamlined Expansion to Cloud Playout

Spectrum X Plus shares the same file and graphics formats with VOS360 Media and can be controlled by the same automation and traffic systems. This enables broadcasters to easily expand any Spectrum X system with cloud playout resources. The transition is seamless for broadcasters, allowing hybrid playout infrastructures to support service continuity and the rapid launch of pop-up channels in the cloud through fluid operations.

AI-Ready Architecture with GPU Acceleration

The media server's software-driven architecture also enables GPU acceleration and deployment of AI-based capabilities such as automated captioning, translation and other value-added workflows, helping broadcasters further streamline operations and reduce costs.

Harmonic will demonstrate its new Spectrum X Plus media server at the 2026 NAB Show, April 19-22, in Las Vegas in stand W2831. To schedule a meeting with Harmonic, visit www.harmonicinc.com/video-streaming/events/nab. More information about Harmonic and the company's solutions is available at www.harmonicinc.com.

About Harmonic

Harmonic (NASDAQ: HLIT), the worldwide leader in virtualized broadband and video delivery solutions, enables media companies and service providers to deliver ultra-high-quality video streaming and broadcast services to consumers globally. The company revolutionized broadband networking via the industry's first virtualized broadband solution, enabling operators to more flexibly deploy gigabit internet services to consumers' homes and mobile devices. Whether simplifying OTT video delivery via innovative cloud and software platforms, or powering the delivery of gigabit internet services, Harmonic is changing the way media companies and service providers monetize live and on-demand content on every screen. More information is available at www.harmonicinc.com.

Legal Notice Regarding Forward-Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Statements concerning Harmonic's business and the anticipated capabilities, advantages, reliability, efficiency, market acceptance, market growth, specifications and benefits of Harmonic products, services and technology are forward-looking statements. These statements are based on our current expectations and beliefs and are subject to risks and uncertainties, including the risks and uncertainties more fully described in Harmonic's filings with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the year ended Dec. 31, 2024, its Quarterly Reports on Form 10-Q and its Current Reports on Form 8-K. The forward-looking statements in this press release are based on information available to Harmonic as of the date hereof, and Harmonic disclaims any obligation to update any forward-looking statements.

Harmonic, the Harmonic logo and other Harmonic marks are owned by Harmonic Inc. or its affiliates. All other trademarks referenced herein are the property of their resp

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