What is an IPTV Subscription?
TVs have always been the prime source of entertainment for the people since the dawn of the commercialization era. New display technical advancements as well as the content delivered over the TV channels these days are consistently improving the user experience since it was invented. In the 21st century, mobile and internet technology have always revolutionized the complete civilization. TVs have also been influenced by the internet technology. The traditional and conventional methods to serve the TV programs like cables, broadcasting or satellite are being replaced with the broadband cables which are used for the internet.
What is IPTV?
IPTV or Internet Protocol Television is a system where the digital television services are being delivered by the means of internet with the help of Internet Protocol. The programs and video channels are delivered to your TV sets via a broadband connection rather than being delivered via a conventional cable or broadcast formats. The video streams are then encoded into the internet protocol packets and dispersed through the public internet which means that they can be picked up by anyone having a set top box and an IPTV subscription. IPTV is usually offered with the VoIP and the internet access. This services comes with a complete package that lets the customers to watch TV, access the internet and make long distance calls using the VoIP. This is offered by a service provider with the help of a closed network infrastructure.
Multicasting and Unicasting
IPTV supports both live TV or multicasting and the stored videos which are also referred to as Video on Demand or unicasting services. To receive the IPTV signal, a computer or a TV equipped with a set top box is needed. The video content is compressed with the help of MPEG2 or a MPEG4 codec and then sent in the MPEG transport system through the IP multicast when live TV is used or through IP Unicast when VoD is used. IP multicast is the technology that delivers the video content to many users simultaneously and the Unicast technology offers the video content particularly for each user. Get more info on Multicasting and Unicasting services here.
The basic protocols which are used in the IPTV forecasting as HTTP or Hyper Text Transfer Protocol, IGMP or IP Group Membership Protocol, and RTSP or Real Time Streaming Protocol. HTTP is a protocol that are used by the browsers to interact with the servers and computers for data transfer. Live TV uses IGNP version 2 in order to connect the TV sets with the multicast streams and switching to another multicast stream while the RTSP protocol is used for unicasting or Video on Demand services.