Large-scale multimedia content delivery over optical networks for interactive TV services
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We propose an on-line presentation of iTVP [3, 2, 4, 1], a platform for delivery of digital audio and video, developed and deployed for the Polish national broadcaster. iTVP designed for operation on a large country-wide scale with the potential of serving selected content to any Internet user. The system is built for delivery of the following services: transmissions of live TV programming, time shifting of live transmissions, video-on-demand, audio-on-demand and accompanying services such as Electronic Program Guide and Personal Video Recorder. The platform is designed to deliver content from multiple independent content providers and with cooperation of last mile network operators. Content can be made available in various encoding formats and delivered to a variety of end devices. Content delivery system is one of the key components of the platform which includes also content provider systems, a number of interactive portals serving as primary access points for end users, and license management system. Functionally, the iTVP CDN consists of the following subsystems: distribution, monitoring, management and reporting subsystem.