Internet Protocol Television

Transcription

1 Internet Protocol Television Table of Contents IPTV Definition History IPTV services in the World IPTV - in numbers What Is IPTV TV distribution methods Differences in technology IPTV - Technology IPTV Capacity Requiremets Comparison of TV Channels with different distribution methods IPTV Services IPTV Operators in Finland Case Study: Maxivision Maxivision Features - npvr Maxivision Features - SSC Maxivision Features - STB Maxivision Prices IPTV Advantages IPTV Disadvantages The Future of IPTV 1

2 IPTV Definition Internet Protocol Television System through which TV service is delivered using Internet Method of transmitting the last mile of the TV broadcast Similar to Cable and Terrestrial distribution Operator mere distributor History 1994 a first broadcast over the Internet, ABC s World News Now. IPTV over DSL broadband interactive TV service in September 1999 VoD (Video on Demand) IPTV in Finland 2008 IPTV service independent from ISP s 2

3 IPTV services in the World IPTV - in numbers 92% of Finnish households has a TV (~2,5 Million) Majority, approx. 1,4 M in Cable 28 % has pay tv 6 % HD-STB (2700 subscribers of HD-channel 0,11 %) 3 % IPTV 0,8% DVB-H Mobile Phones (Mobile TV) 2% Watched HDTV in Europe 27 Million IPTV subscribers in the world 3

4 What Is IPTV What digital television was supposed to be: Real interactivity Video on Demand Pay-TV channels for everyone, not only those connected to Cable Not Internet TV Internet TV do not use dedicated and controlled network for high quality data transfer Television service distributed via Internet. 2 forms of viewing: Streaming Downloading to a computer Internet TV is accessible by web browser TV distribution methods Terrestrial DVB-T (Digital Video Broadcasting, Terrestrial) Over-the-air broadcasts 10 free channels, about 20 Pay-tv channel Cable (Welho) DVB-C Signals transmitted through fixed optical fibers or coaxial cables 15 free channels, about 100 Pay-tv channels 12 HD-channels Satellite (Canal Digital) DVB-S Signal transmitted over communications satellite to satellite dish 10 free channels, over 70 Pay-channels channels 12 HD-channels IPTV (Maxivision) DVB-IPTV Signal transmitted via a packet-switched Internet protocol network 10 free channels, over 70 Pay-tv channels 4 HD-channels (Coming soon) 4

5 Differences in technology Digital TV: One way communication No interaction One format at a time IPTV: Two way communication 100% interaction Consumer can select the format of the signal (e.g. Mpeg2 / Mpeg4) Allows significantly more content and functionality Web browser Weather forecast ( Maxivision ) Games Chat IPTV - Technology IPTV is distributed using Multicast Each channels is transmitted once through the backbone -> then duplicated for each customer Requires less backbone capacity, allows more channels. Example: one SD-channel requires 2Mbps, if backbone 10Gbps -> 5000 channels Head-end Media streams collected and decoded from Terrestrial and Satellite networks Re-coded for IP distribution MPEG 2 for IP8 MPEG 4 for IP2 npvr Hard disks 5

6 IPTV Capacity Requirements Service Coding Capacity Mbps Note HDTV MPEG i HDTV MPEG p SDTV MPEG2 5 VoD MPEG2 5 HDTV MPEG i HDTV MPEG p SDTV MPEG4 2 VoD MPEG4 2 6

7 Comparison of TV Channels with different distribution methods DVB-C DVB-T DVB-S IPTV Max capacity 4 Gbps 154 Mbps 4,5 Gbps 10 Gbps -> SDTV (MPEG2) > HDTV (MPEG2) > SDTV (MPEG4) > HDTV (MPEG4) > VoD Ok Difficult Difficult Good Interactivity Ok Difficult Difficult Good IPTV Services Usually sold as a triple play service Internet connection IPTV VoIP IPTV normally uses closed network IPTV-user must have Internet connection from the same operator 7

8 IPTV Operators in Finland Elisa viihde Closed network 24Mbits Internet connection IPTV service VoD MPEG2 SD and HD Channels DVB-T/C Tuners About 50 channels Sonera laajakaista tv Closed network User has to use Sonera s Internet connection MPEG2 For SD-Channel minimum 8Mbits HD-Channel minimum 20Mbits Case Study: Maxivision IPTV operator in Finland Started 2008 Open network Can be used with any ISP connection MPEG4 / MPEG2 SD-Channel min. 2Mbits / 8Mbits HD-Channel 8Mbits / MPEG2 not available Over 80 channels, 4 HD-channels 8

9 Maxivision Features - npvr Channels are viewable after 10 seconds of the order No pay-tv cards Minimum subscription period mostly 1 month Automatic software updates IPTV- and DVB-T-tuners npvr (network Personal Video Recorder) Unlimited recording space, ( sold in 100hour packages) Simultaneous recording from unlimited amount of channel Scheduling of recording using web browser, mobile phone or STB Maxivision Features - SSC Self-Service Center Internet based customer portal Subscriptions, recordings and settings are handled PIN-code for x-rated content 9

10 Maxivision Features - STB The IPTV digital receiver, Set-Top-Box STB is a computer with optimized operating system for IPTV-services. Decoders MPEG2 (better quality, larger bandwidth 6,7 Mbits/s) MPEG4 H.264 (lower bandwidth 1,8 Mbits/s ) User can select the stream according to connection speed EPG Other applications Eg weather forecast service by Foreca Maxivision Prices STB 199 Maxivision basic service 6 / month 15 channels 100h npvr Pay-TV channels Packets 4-29 / month (10 different packages) Individual channel 3 / month 10

11 IPTV Advantages Provides decent quality TV-service for Terrestrial dead zones Large selection of channels for peripheral areas In the future, a real interactive TV Available for everyone Broadband Internet connection must be available for everyone in Finland by the end of 2010 IPTV Disadvantages Minimum of 2Mbits/s Internet connection Wireless connections, 3G, too unreliable for TV-services MPEG4 quality is barely acceptable for over 40 inch televisions 11

12 The Future of IPTV HD VoD HD Channels More applications on-demand gaming Data services Digital music Home security. 12