Video Server - A host (computer or other computerized system) capable of storing large quantities of video related content and serving it (sending it) upon request over a network to receiving computers, set-tops, TVs, etc. Video servers are an essential part of any system that offers video on demand. Compared to the standard server in the networking industry (which includes the Internet,) video servers must be able handle a lot more data as the files typically are larger and must be continuously delivered.
http://en.wikipedia.org/wiki/Video_server


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