IPTV is the process of delivering content over an IP based network which uses the internet. Typically this content is audiovisual although such networks can be used to send other information such as programme guides. In order for an IPTV service to function the provider must first prepare, code and then distribute the content over their network, typically a user will need a set top box in order to view programmes although increasingly, desktop computers, laptops, tablets and even mobile phones are used.
There are four main steps which an
IPTV service must follow in order to deliver content to its customers. For most television programming this will involve the provider obtaining the rights from whoever owns the programming, in terms of movies this may be a studio and in the case of a sporting event this may be a sports' official body. The rights obtained will typically give the IPTV provider permission to redistribute the programming.
With this content obtained the provider will then have to encode it to ensure that only those customers that are permitted to view it do so. This encoding stage is usually carried out after the provider has received the content from a satellite feed; normally this process will also change the format of the programming to make it suitable for distribution across the IP based network.
The IPTV service typically uses the existing phone based broadband connections. For this process to be successful there must be enough bandwidth to provide the content to the customer's set top box, otherwise users may have problems in streaming the content. Bandwidth problems are becoming more prevalent in countries with legacy phone systems that are simply incapable of carrying so much information, in such instances fibre optics are being employed to allow for faster data speeds.
The next element of the service is generally termed "middleware". This is essentially the user interface that the customer uses and subsequently it must provide an easy and simple way to access the desired content. Typically this takes shape as an EPG (Electronic Programme Guide) but may also be far more interactive with picture in picture or search functionality based upon programme titles, actors or categories.
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