Harmonic announces that its ProStream 1000 stream processor with ACE transcoding technology has completed compliance testing for the Microsoft Mediaroom IPTV platform. Testing was administered by Microsoft Corp. as part of the Microsoft Mediaroom Interoperability and Qualification Lab program, which is intended to enable the ongoing interoperability and compliance of headend equipment used in deployments of Microsoft Mediaroom. Harmonic powers the video headend infrastructure for a majority of Microsoft Mediaroom customers worldwide.

ProStream 1000 with ACE is the first high density HD/SD broadcast transcoder to complete Mediaroom compliance testing. ACE supports HD and SD, MPEG-2 and MPEG-4 AVC (H.264) video and audio transcoding of up to 20 HD or 80 SD channels in a compact and power-efficient one rack-unit (1-RU) chassis. The platform's industry-leading density offers Mediaroom customers a highly cost-effective and flexible compression solution that delivers excellent video quality.

Microsoft Mediaroom is an award-winning IPTV platform that powers the cloud for network operators and service providers to deliver entertainment experiences across all the screens in their subscribers' lives. More than five million households worldwide subscribe to TV services powered by Mediaroom.

Harmonic's portfolio of market-leading video processing solutions, including ProStream 1000 with ACE, will be on display at Harmonic's stand #1.C61 during IBC 2010 in Amsterdam, September 10-14.