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Voddler : ウィキペディア英語版
Voddler

Voddler is a Stockholm, Sweden-based provider of a video-on-demand (VOD) platform and a streaming technology for over-the-top (OTT) streaming on the public Internet. In Scandinavia, Voddler is primarily known for the commercial VOD-service (Voddler ), which was launched in 2009. As a company, Voddler was founded in 2005 and developed its own streaming solution, called Vnet. Vnet is based on peer-to-peer (p2p), where all users contribute by streaming movies to each other, but, unlike traditional p2p, Vnet has a central administrator who decides which users that have access to which movies. Due to this exception, Vnet has been referred to as a "hybrid p2p distribution system", "walled garden p2p" or "controlled p2p". In addition to running the consumer service Voddler, the company Voddler also offers, since 2013, Vnet as a stand-alone technology for other streaming platforms. The service (Bollyvod ), a global VOD-service for Bollywood-content that Voddler built for the Indian movie industry, was released as a pilot in 2014.
== Voddler's streaming technology Vnet ==

Voddler's streaming technology, called Vnet by the company, is a peer-to-peer-based video content delivery solution. With p2p-streaming, movies are not streamed from a central server or content delivery network (CDN), but from other users who have parts of the movie on their units after seeing the movie earlier. This process begins when a user clicks play for a movie and continues throughout the viewing time, allowing for seamless viewing. After the viewer has completed watching the video, parts of the video file remains for a time on the user's device. Popular content, that is watched by many other users, remain longer on any one user's device than less popular content, which more quickly is removed from the network nodes.
Compared to server-based streaming, p2p-based streaming saves on data costs for the service provider, at the same time as the distribution becomes more robust, since it only grows stronger with every additional user. What distinguishes Vnet from traditional p2p is that Vnet allows an administrator to have central control over which movies are in the network and which users that can see them. Publishing into the network and access to the network is thus centrally controlled.
The Vnet client is a separate application that uses closed source proprietary code from Voddler and is run as background daemon or service).
Vnet is a patented solution with 28 patent in two patent families.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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