CoolStreaming is a

P2PTV P2PTV refers to peer-to-peer (P2P) software applications designed to redistribute video streams in real time on a P2P network; the distributed video streams are typically TV channels from all over the world but may also come from other sources. T ...

(

peer-to-peer Peer-to-peer (P2P) computing or networking is a distributed application architecture that partitions tasks or workloads between peers. Peers are equally privileged, equipotent participants in the network. They are said to form a peer-to-peer ...

television Television, sometimes shortened to TV, is a telecommunication Media (communication), medium for transmitting moving images and sound. The term can refer to a television set, or the medium of Transmission (telecommunications), television tra ...

) technology that enables users to share television content with each other over the Internet. The technology behind CoolStreaming is similar to that of BitTorrent. The viewers upload content at the same time the programs are downloaded and viewed. CoolStreaming creates a local stream on localhost and that stream is then read by Windows Media Player, RealPlayer or other media players. The original coolstreaming code is developed with Python 2.3 on Windows. Coolstreaming is a data-centric design of peer-to-peer streaming overlay. Notable features of the protocol include its intelligent

scheduling algorithm In computing, scheduling is the action of assigning ''resources'' to perform ''tasks''. The ''resources'' may be processors, network links or expansion cards. The ''tasks'' may be threads, processes or data flows. The scheduling activity is c ...

that copes well with the bandwidth differences of uploading clients and thus minimises skipping during playback, and its swarm-style architecture that uses a directed graph based on gossip algorithms to broadcast content availability. Coolstreaming is the first P2PTV system that attracted a remarkable number of clients (over one million, while most of the previous systems attracted less than one thousand clients). As of June 10, 2005 the Coolstreaming service had stopped due to copyright issues. However, there are several alternative services. CoolStreaming is the base technology for Roxbeam Corp., which launched live IPTV programs jointly with Yahoo Japan in October 2006.

References

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Un solo sito per vedere tante reti tv - La Repubblica
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Tutti davanti alla Tv: e se va male, cè il web

External links

CoolStreaming/DONet: A Data-Driven Overlay Network for Efficient Live Media Streaming

Coolstreaming: Design, Theory and Practice

An Empirical Study of the Coolstreaming+ System

A Measurement of a large-scale Peer-to-Peer Live Video Streaming System

Inside the New Coolstreaming: Principles, Measurements and Performance Implications
Streaming television Peer-to-peer software {{network-software-stub