Virgin Media Delivers 24 Channels of Live, HD Olympic Games Coverage With Harmonic Video Solutions

High-Density Electra(R) 8000 Encoders and ProStream(R) 1000 Multiplexers Increase Efficiencies While Providing Exceptional Video Quality

SAN JOSE, Calif. -- June 12, 2012 -- Harmonic Inc. (NASDAQ: HLIT) today announced that Virgin Media, the United Kingdom's leading provider of cable television, broadband, phone, and mobile services, has selected a complete range of Harmonic video processing solutions to power its HD channel delivery in the U.K., including HD coverage of the 2012 London Olympics from the BBC. Utilizing a combination of Harmonic's advanced Electra(R) 8000 universal encoders, ProStream(R) 1000 Multiplexer, NMX Digital Service Manager(TM), and Iris(TM) advanced video analytics software suite, Virgin Media will deliver 24 high-quality HD BBC Olympic Channels dedicated solely to Olympic Games coverage, providing viewers with unparalleled video quality during the world's largest sporting event.

Neil Drennan, director of TV Engineering at Virgin Media said, "With a full range of live channels in HD from the BBC, Virgin Media customers will be spoiled with a superb viewer experience for the London Olympics. Harmonic is delivering a range of high-density video systems with outstanding video quality and, thanks to Harmonic's high-performance yet bandwidth-saving encoding and management software solutions, our TV customers can now watch even more live sports coverage in breathtaking HD quality."

During the summer games, U.K. broadcaster BBC will supply Virgin Media with the live HD BBC Olympic Channels. The content will be encoded instantly by Harmonic's Electra 8000 encoder, which supports both MPEG-2 and MPEG-4 AVC compression, enabling Virgin Media to deliver high-quality video to subscribers via Virgin Media's fiber-rich cable infrastructure.

The Electra 8000 encoder and ProStream 1000 solutions are managed by Harmonic's NMX Digital Service Manager, a powerful software-based network management system for creating, modifying, and managing service lineups. Utilizing NMX, the underlying equipment is automatically reconfigured to support the new operating parameters, providing a seamless operation. The NMX management system is fully integrated with Harmonic's Iris video analytics software suite, which provides Virgin Media with video quality monitoring, global channel availability, and source profiling measurements both in real time and historically, enabling Virgin Media engineers to analyze all of their sources and programming over time and increase customer satisfaction. Service lineups are downloaded and synchronized with NMX, offering instant data collection.

"For the first time, U.K. subscribers will be able to watch every spellbinding moment of the London Olympics, live and in HD, delivered with exceptional quality," said Ian Graham, vice president of Europe and Middle East sales at Harmonic. "Our sophisticated family of encoding solutions offers the superior video quality desired, as well as a high-density, bandwidth-saving design that is instrumental in allowing Virgin Media to add this additional capacity with minimal headend space."

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About Harmonic Inc.

Harmonic Inc. (NASDAQ: HLIT) provides infrastructure that powers the video economy. The company enables content and service providers to efficiently create, prepare, and deliver differentiated video services for television and new media platforms. More information is available at www.harmonicinc.com.

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, including statements related to the anticipated capabilities and benefits of Harmonic's Electra 8000, ProStream 1000, NMX, and Iris products. Our expectations and beliefs regarding these matters may not materialize and are subject to risks and uncertainties, including the possibility that these products may not meet some or all of its anticipated capabilities or provide some or all of its anticipated benefits, such as exceptional video quality, bandwidth saving, and increased efficiencies.

The forward-looking statements contained in this press release are also subject to other risks and uncertainties, such as those 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, 2011, 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.

EDITOR'S NOTE -- Product and company names used herein are trademarks or registered trademarks of their respective owners.

ENDS