A qualitative measurement survey of popular Internet-based IPTV systems

Television over the Internet (IPTV) is regarded as the killer application for next generation networks (NGN). While the ITU is currently moving toward the standardized of IPTV, several existing applications like Joost and Zattoo are currently already providing a large amount of video content to Internet users. In this paper we study some popular video content delivery mechanisms and characterize them by measurements to study the user-perceived quality of experience (QoE).