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IPTV for TV distribution

                                        Author: Jonathan Rackowe, Netvue
IPTV systems take digital Terrestrial and Satellite          The benefits of IPTV
DVB television signals received at broad...

IPTV Streaming provides an ideal solution for
distribution of television and video channels around
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IPTV for TV distribution


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IPTV for TV distribution

  1. 1. IPTV for TV distribution Author: Jonathan Rackowe, Netvue This Update Published: 2009 IPTV streaming provides the solution to the demise of analogue TV distribution systems. Introduction rather worse than reasonable! ) it simply may not be As UK digital switch-over progresses and the last good enough for digital TV. days of analogue television hasten to a close, Add to this the complication of distributing other video many people are wondering which way to turn signals, such as satellite channels, camera feeds or when it comes to replacing analogue television DVD player feeds, across the same old co-ax cabling distribution around their business premises. and something rather better than this old world analogue RF distribution system is called for. The problem For those businesses with multiple display screens Perhaps the answer lies with Internet TV then? After scattered around their building it very soon becomes all, there are rumours of countless free channels out apparent that simply plugging Freeview receivers into there on the Web just waiting to be pulled down. each point where Television is wanted doesn't provide Unfortunately, the truth of this is rather less rosy. TV a very satisfactory solution. In many cases the original from the Internet has potential strength for its variety RF co-ax cabled distribution system that used to of channels, but real weaknesses when it comes to deliver analogue TV signals throughout the building is resolution and quality. simply not good enough to deliver the digital Freeview The potential immediacy of live news and unlimited DVB signals. content direct from the Internet is very attractive. But in reality, live Internet TV is dogged by the irritation of This is because the digital TV signal either works or it small, poor quality images due to the inherent low doesn’t: An analogue signal can be quite poor and still quality of service. The Internet’s underlying give a watchable picture (albeit a grainy one), but a technology simply cannot support the delivery of digital TV signal will not degrade slowly in the same multicast TV to millions of viewers. way. With a good signal the digital TV picture will be pretty much perfect, but if the signal strength is poor The solution there will be blockiness and occasional freezing, and at worst no picture at all. The good news is that there is a new and much better alternative to all of this: IPTV distributed over So even if the old co-ax system does give reasonable standard local area network (LAN) cabling. quality analogue pictures ( and plenty we’ve seen are 1
  2. 2. IPTV systems take digital Terrestrial and Satellite The benefits of IPTV DVB television signals received at broadcast quality, Using IPTV for distribution of TV and video in this way de-multiplex them into individual channels and IP offers many significant benefits over conventional wrap them within ‘head-end’ equipment, to provide analogue distribution: live IPTV streams on a CAT 5 or CAT 6 LAN. IPTV is digital - so it is immune from the The IP wrapping involves parcelling up the broadcast problems of noise, distortion, ghosting and signal digital TV data streams (which are already MPEG degradation that affect analogue signals. The result is encoded) into streams of IP packets so that they can that IPTV gives you high quality pictures and sound. travel over the computer network. IPTV channels can be watched on PC and Mac These IPTV packets are transmitted across the desktops – at the same time as distributing channels computer network just like any other IP packets (data to IPTV receivers for viewing on conventional TV or VOIP packets for example), but network switches display screens, TV projectors, plasma screens and recognise the time-sensitive nature of IPTV multicast LCD displays. packets and give them a higher priority than other network traffic. This ensures that the TV pictures are IPTV can use the existing computer network - displayed as they should be. no new cables, no hassle! For new installations this is where IPTV really comes into its own. This IP based approach to TV distribution can be IPTV distributes an unlimited number of extended to include video on demand (VOD) channels - a typical IPTV system shows any desired channels from VOD servers, and video sources, such mixture of Freeview TV and radio channels, plus any as DVD players. For these video sources, the signal number of additional channels from other sources. is MPEG encoded as necessary before being IP packetised and streamed onto the network. IPTV supports widescreen and 4:3 picture formats - the widescreen digital picture flag is carried by the IPTV channels so that the IPTV receiver automatically shows the correct aspect ratio picture on the display screen. IPTV allows distribution of HD (high definition) signals - HD is becoming more and more widely used; IPTV allows you to upgrade your channels to HD at any time in the future, though some hardware changes may be necessary to achieve this. IPTV allows new enhanced services to be deployed: Video on Demand Scheduled Recording of TV Rolling record of TV channels Scheduled Playout channels Digital Signage Site to site video links 2
  3. 3. Conclusion IPTV Streaming provides an ideal solution for distribution of television and video channels around businesses, retail environments and public spaces. It provides better quality than conventional analogue distribution and also offers the advantages of new services, such as Video on Demand and Digital Signage, whilst utilising standard computer network cabling. About Netvue: Netvue was formed in 2005 specifically to provide new technology IPTV solutions to companies across a range of business sectors. With key personnel drawn from a broadcast TV systems integration background, Netvue offers a professional systems design and installation service to its clients. Netvue is a business division of Projects UK Ltd, based in London, UK. Reg. No 5370455. Netvue Website: Netvue Contact: Jonathan Rackowe, Managing Director +44 (0)20 8567 2201 3