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What is IPTV?
From a TV watcher's point of view, IPTV is very simple: instead of receiving TV programs as broadcast signals that enter your home from a rooftop antenna, satellite dish, or fiber-optic cable, you get them streamed (downloaded and played almost simultaneously) through your Internet connection. Although IPTV can work on relatively slow ADSL broadband connections, which can probably handle only 1–10 Mbps (million bits per second—roughly the amount of information in an average novel entering your computer every second), it's much better on fiber broadband lines with about 10 times higher bandwidth (information carrying capacity) of maybe 10–100Mbps. You watch the program either on your computer, a mobile device (like a smartphone), or with a set-top box (a kind of adapter that fits between your Internet connection and your existing television receiver, decoding incoming signals so your TV can display Internet programs).

From the viewpoint of a broadcaster or telephone company, IPTV is somewhat more complex. You need a sophisticated storage system for all the videos you want to make available and a web-style interface that allows people to select the programs they want. Once a viewer has selected a program, you need to be able to encode the video file in a suitable format for streaming, encrypt it (encoding it so only people who've paid can decode and receive it), embed advertisements (especially if the program is free), and stream it across the Internet to anything from one person to (potentially) thousands or millions of people at a time. Furthermore, you have to figure out how to do this to provide a consistently high-quality picture (especially if you're delivering advertising with your programming—because that's what your paying advertisers will certainly expect). king iptv

Three types of IPTV
IPTV comes in three different flavors. The first kind—and the one you're probably using already—is called video on demand (VOD). With a service such as Netflix (an online movie website), you select a TV program or movie you want to watch from a wide range, pay your money, and watch it there and then. A different kind of IPTV is being offered by some of the world's more enterprising TV broadcasters. In the UK, the BBC (British Broadcasting Corporation) makes its last week's programs available online using a web-based streaming video player called the BBC iPlayer.