Internet Protocol Television (IPTV) is a technology used to distribute television and video signals through packet networks, using the IP protocol. The system is based on streaming techniques of video, where the user can start the reproduction of a video without having to wait for it to finish downloading. The system uses broadband networks for the transmission.
The content or service can be offered to the clients without involving the Internet provider directly. The service simply uses the network for the transmission of data, without integrating, for example, with the management or billing systems of the provider. This behavior is called Over the Top (OTT).
The TVs that have the ability to connect to the Internet or receive content from programs over IP networks are commonly known as Connected TVs or Connected TV devices.
There are three types of IPTV:
- Live television: The service offers live TV.
- Time-Shifted TV: The service offers the possibility of watching TV shows which have been aired before.
- Video On Demand (VOD): the service offers the possibility of asking for a certain video without using normal programming.
IPTV is defined as a safe and reliable method to offer video and services associated to the users. These services are offered through agnostic packet networks, which use the IP protocol to transport audio, video and control signals. In the deployment of IPTV, the security and performance are ensured and measured so that a high quality is ensured. Multicast transmissions are used and the set-top-box or applications of the computers join the channels that want to be received (except for the VOD’s case in which, generally, a Unicast data stream is used).
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