Video on Demand are systems which allow users to choose and watch media content on demand. IPTV technology is often used to bring video on demand to televisions and personal computers.
Television VOD systems either stream content through a set-top box, a computer or other device, allowing viewing in real time, or download it to a device such as a computer, portable media player for viewing at any time. The majority of cable- and telco-based television providers offer both VOD streaming, including pay-per-view and free content, whereby a user buys or selects a movie or television program and it begins to play on the television set almost instantaneously, or downloading to a DVR rented from the provider, or downloaded onto a pc, for viewing whenever they want. Internet television, (using the Internet), is an increasingly popular form of video on demand.
Some airlines offer VOD as in-flight entertainment to passengers through individually-controlled video screens embedded in seatbacks or armrests or offered by using portable media players. Airline VOD systems allow passengers to select specific stored media content and play it on demand including pause, fast forward, and rewind.
Sky Anytime is an example on VOD systems. This allows sky users to watch movies, sports or HD programmes on demand.
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