HARMONIC`S MARKET - LEADING CONTRIBUTION AND DISTRIBUTION SOLUTION SELECTED BY SABC TO FACILITATE BROADCAST OF 2010 FIFA WORLD CUP [Johannesburg, 23 June 2010] - Ellipse Encoders and ProView? IRDs Power Live Broadcast of the World`s Most Widely-Viewed Sports Events SUNNYVALE, CALIF. - JUNE 23, 2010 - Harmonic Inc. (NASDAQ: HLIT) today announced that its cutting- edge contribution and distribution solution and integrated receiver/decoders have been deployed to facilitate the live broadcast of the 2010 FIFA World Cup? by the South African Broadcasting Corporation (SABC), the official South African Broadcaster of the FIFA World Cup. The tournament is being played in 10 stadiums in nine South African cities from June 11 to July 11, 2010. The SABC selected Harmonic Ellipse? 1000 encoders and ProView? 2900 IRDs along with Atecom?s ATM adaptors from local Harmonic partner Graphic Image Technologies (GIT) for this widely-viewed, multi-venue sports event due to their good video quality, scalability, support, integration and performance To bring the matches live to fans throughout South Africa, an Electra 8000 dual HD encoder and 12 Ellipse SD 1000 encoders, ProView 2900 SD IRDs and ProView 7000 HD decoders have been seamlessly integrated through Atecom Falcon ATM units over the local Telco`s ATM network into SABC`s video infrastructure. The link-up facilitates networking the FIFA International Broadcast Centre ("IBC") to the SABC`s Broadcasting Centre at the Sandton Convention Centre (SCC) and their MCR in Auckland Park for final broadcast. "We chose Harmonic to improve and power our broadcasts simply because the company, through its local partner GIT, provided a good quality, cost- effective, integrated and feature-rich video solution to meet our needs," said David Wilson, Hi-Tech Manager TVOB at South Africa Broadcasting Corporation. "This latest deployment provides the added performance we need to bring the World Cup matches, in good quality, to our viewers." "With Harmonic`s contribution and distribution solutions, we were able to offer the Host Broadcaster, the SABC a unique and integrated solution that further enhances scalability, improves performance and eases management of their video services," said Mark Chertkow at Graphic Image Technologies, Harmonic`s local partner in South Africa. "With this deployment, SABC has expanded its use of Harmonic`s video delivery solutions and implemented an efficient solution for increasing its live event programming." The Ellipse 1000 encoder is ideal for fixed contribution over IP and legacy ATM/PDH/SDH networks. A professional, high quality encoder, it provides efficient bit-rate utilization for delivery of high quality video. The Ellipse 1000 simultaneously encodes video feeds as MPEG-2 SD 4:2:0/4:2:2 and MPEG-4 AVC SD 4:2:0, providing a smooth and cost- effective migration path from MPEG-2 CBR to MPEG-4 AVC CBR encoding schemes. It is firmware- upgradeable to MPEG-4 AVC HD as well, making it one of the most versatile encoders available and further extending its migration path. The professional ProView 2900 integrated receiver decoder is a broadcast-quality decoder, decryptor and interface converter that provides MPEG-2 and AVC SD decoding, advanced transport stream processing, cutting-edge IP processing technologies and a variety of front-ends, including DVB-S2, MPEG over IP. About South Africa Broadcasting Corporation The South African Broadcasting Corporation is a public broadcasting organisation established in 1936 out of the merger of three separate broadcasting stations formed in the early 1920s. The SABC`s core business is to deliver a variety of high quality programmes and services through television and radio that informs, educates, entertains and supports the public at large. The SABC, through its 3 television channels & 18 radio stations is providing live coverage of all the 64 World Cup matches across their network . About Harmonic Inc. Harmonic Inc. is redefining video delivery with the industry`s most powerful solutions for delivering live and on-demand video to TVs, PCs and mobile devices. Harmonic`s technical innovation and market leadership enable the company to offer a unique and comprehensive solution portfolio - including encoding, transcoding, content preparation, stream processing, asset management, edge processing, and delivery. Broadcast, cable, Internet, mobile, satellite and telecom service providers around the world choose Harmonic`s IP-based digital video, software, and broadband edge and access solutions. Using these award - winning and industry-leading solutions, operators can reduce costs and differentiate their services by offering consumers a higher quality, personalized multi-screen experience. Harmonic (NASDAQ: HLIT) is headquartered in Sunnyvale, California with R&D, sales and system integration centers worldwide. The company`s customers, including many of the world`s largest communications providers, deliver services in virtually every country. Visit www.harmonicinc.com for more information.

Harmonic Test Setup in GIT’s offices

Harmonic Provides SABC SWC 2010 Video feeds