Press Release

SAN JOSE, Calif. - August 1, 2012 - Harmonic, a worldwide leader in video delivery infrastructure, is providing live encoding for the world's first large-scale, live, public trial of Dynamic Adaptive Streaming over HTTP, known as MPEG-DASH, during the London Olympics. Belgian public broadcaster VRT is using Harmonic's ProMedia(TM) Live transcoder, together with equipment provided by other DASH Promoters Group members, to offer its audience the chance to experience the Olympic Games broadcast on their laptops, smartphones and tablets via the MPEG-DASH advanced adaptive bitrate streaming protocol.

In addition to this ground-breaking MPEG-DASH demonstration, Harmonic equipment is bringing home the games through broadcast, cable and multiscreen installations at the BBC, Virgin Media and NBC respectively. Farther afield, Harmonic gear is used by many of the regional Olympics broadcasters including Sky Italia, TV Azteca in Mexico, NRK in Norway and SRG-SSR in Switzerland.

Harmonic is also working closely with broadcasters across Europe to develop their MPEG-DASH-based multiscreen service offerings. For more information on Harmonic and its solutions visit www.harmonicinc.com.

For more information on the DASH Olympic trial visit the DASH Promoters Group website at http://dashpg.com/?page_id=194.

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About Harmonic
Harmonic (NASDAQ: HLIT) is the worldwide leader in video delivery infrastructure for emerging television and video services. The company's production-ready innovation enables content and service providers to efficiently create, prepare, and deliver differentiated services for television and new media video 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 products. Our expectations and beliefs regarding the products may not materialize and are subject to risks and uncertainties, including the possibility that the MPEG-DASH product meets some or all of its anticipated capabilities or provide some or all of its anticipated benefits.

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.

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