IPTV (Internet Protocol Television) is a system where a digital television service is delivered using Internet Protocol over a network infrastructure, which may include delivery by a broadband connection.A general definition of IPTV is television content that, instead of being delivered through traditional broadcast and cable formats, is received bythe viewer through the technologies used for computer networks. For residential users, IPTV is often provided in conjunction with Video on Demand and may be bundled with Internet services such as Web access and VoIP. The commercial bundling of IPTV, VoIP and Internet access is referred to as “Triple Play” service (when these three are offered with mobility, the service is referred to as “Quadruple Play”). IPTV is typically supplied by a service provider using a closed network infrastructure. This closed network approach is in competition with the delivery of TV content over the public Internet, called Internet Television. In businesses, IPTV may be used to deliver television content over corporate LANs.
What Are The Advantages of IP TV?Advantages of IPTV include two-way capability lacked by traditional TV distribution technologies, as well as point-to-point distribution allowing each viewer to view individual broadcasts. This enables stream control (pause, wind/rewind etc.) and a free selection of programming much likeits narrowband cousin, the web.
IPTV covers both live TV (multicasting) as well as stored video (Video on Demand VOD). The playback of IPTV requires either a personal computer or a “set-top box” connected to a TV. Video content is typically MPEG2TS delivered via IP Multicast, a method in which information can be sent to multiple computers at the same time, with the newly released H.264 format thought to replace the older MPEG-2