IP technology makes it possible to share the interface with other applications (internet, VOIP). In addition, increasingly efficient codecs (MPEG-2, MPEG-4 and VC-1) make it possible to optimize the consumption of bandwidth.
The IP network thus makes it possible to broadcast more content and functionalities. In a conventional or satellite TV network, using the video broadcasting technique, all of the content is constantly offered to the user, who then selects it in his decoder. He can then choose from a variety of options while the telecom operator, by cable or satellite, continuously supplies the distribution channel. The IP network, on the other hand, works differently: the contents remain in the network, and only those selected by the user are sent to it. This frees up bandwidth and does not limit the choice of the user to the size of the distribution channel. Only the watched channels are sent on the IP network thanks to multicasting unlike VOD where the video is sent in unicast and therefore the bandwidth is used for each viewer.
Like all IP technologies, the operator "knows" what you are watching and when you are watching it. This can pose a problem in terms of privacy. Although IPTV is a completely legal technology, it remains a subject of debate in France and in other countries because this technology makes it possible to facilitate pirating of streams and to give access to counterfeit or illegal content.Read more