logging in or signing up bbc_tvp_what_is_iptv rdxrdx Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 44 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: March 11, 2011 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript IPTV Overview: IPTV Overview Presented by Paul Ashun TV Platforms Group © BBC 2008IPTV Overview: IPTV Overview Chapters: What is IPTV (as opposed to internet TV) ? What is VOD (as opposed to IPTV) Middleware and Video Common IPTV Models Demos / Examples Other factors 7. Questions © BBC 2008Slide 3: What is IPTV (and what is internet TV) © BBC 20081a - What is IPTV: 1a - What is IPTV Still evolving Digital TV delivered using technologies used for computer network. Internet Protocols (http, rtsp, igmp) A TV like ‘quality of service’ (always on, reliable) Can be ‘live’ or pre-recorded (on-demand) Usually over a managed/closed network Eg. Virgin TV, Tiscali TV, BT Vision © BBC 20081b - What is Internet TV: 1b - What is Internet TV Digital TV delivered using technologies used for computer network. Internet Protocols (http, rtsp, igcmp) No guaranteed ‘quality of service’ Usually delivered via open-internet / un-managed network Eg. YouTube, BBC iPlayer on browser/PC © BBC 20081c – Managed Networks: 1c – Managed Networks Control over bandwidth allocation contention ratio content } Controlled ‘quality of service’ © BBC 20081d – Open Internet (Unmanaged networks): 1d – Open Internet (Unmanaged networks) Variable bandwidth Higher contention ratio (20:1) Less control over content } Little control over ‘quality of service’ © BBC 20081e – Open Internet (Unmanaged networks): 1e – Open Internet (Unmanaged networks) The BBC is working to ensure quality of service with ISPs. This will possibly change the definition of IPTV through the consensus that the quality of service is good over the open internet © BBC 2008Slide 9: YouTube PC iPlayer FreeSat Virgin VOD Tiscali TV Orange TV BT Vision Open Internet Managed Network TV iPlayer (on Virgin) © BBC 2008Slide 10: Copper wire / fibre Compression/ Encoding/ Encryption Head end to Capture TV How to capture/create IPTV © BBC 2008Slide 11: Mobile Device Wifi / wimax Cable Set-top Box Hybrid fibre coax Network ADSL Set-top Box Freesat Tiscali BT Vision [Orange TV] Virgin Computer Protocols - http - rtsp - igmp ADSL IPTV over the network cloud © BBC 2008Why IPTV and not Broadcast: Why IPTV and not Broadcast Two-way data flow (video on demand) Greater personalisation / tailored advertising Combined features Voice over IP Messaging/Recommendations Chat around content © BBC 2008IPTV- Key Protocols: IPTV- Key Protocols HTTP RTSP IGMP Request Response play pause record Firefox, Internet Explorer Real Player, Windows Media Player (streamed video) (hyoer-text- transfer-protocol) (real time streaming protocol) - connecting to multicast stream (TV channel) - changing from one channel to another (internet group management protocol) © BBC 2008Slide 14: What is VOD © BBC 20082a - What is VOD: 2a - What is VOD Select and watch video content (usually over a network) Either content is streamed or downloaded with/to the application Apps have a subset of VCR functionality including RWD, Pause, FFWD etc. Push VOD – delivered to set top box from broadcaster © BBC 20082b - What is VOD: 2b - What is VOD Not necessarily over IP. Eg. Push VOD Push VOD – delivered to set top box from broadcaster Eg. BBC iPlayer, YouTube, BBC Archive, Rimokon quiz, Tiscali, BT vision © BBC 2008Slide 17: Middleware And Video Codecs © BBC 20083a – Middleware: 3a – Middleware Set-top box software that allows us to write applications Affect application capabilities © BBC 20083b – Middleware: 3b – Middleware Middleware MHEG – (Freeview / Freesat) Liberate – (Virgin) ICTV/other – (once trialled by Tiscali; used by US web sites) HTML/JavaScript (KIT/Proprietary operators) Mediaroom (BT Vision) © BBC 20083c – Codecs: 3c – Codecs Compression/Decompression File extension specifies codec used to compress/decompress Lossy/Lossless © BBC 20083d – Codecs: 3d – Codecs Codecs H.264 MPEG4 MPEG2 WMV9 © BBC 2008H.264: H.264 1. Up to 50% in bit rate savings: Compared to H.263v2 (H.263+) or MPEG-4 Simple Profile, H.264 permits a reduction in bit rate by up to 50% for a similar degree of encoder optimization at most bit rates. 2. High quality video: H.264 offers consistently good video quality at high and low bit rates. 3. Error resilience: H.264 provides the tools necessary to deal with packet loss in packet networks and bit errors in error-prone wireless networks. 4. Network friendliness: Through the Network Adaptation Layer, H.264 bit streams can be easily transported over different networks. © BBC 2008Slide 23: IPTV/Internet TV Platforms/Operators OPERATOR MIDDLEWARE CODEC DELIVERY NETWORK MANAGED NETWORK Tiscali (client-side Java) h.264 ADSL YES BT Vision Mediaroom h.264 ADSL YES Virgin Liberate (Seac-change) Mpeg 2 Hybrid fibre co-ax YES Freesat MHEG 1.06 turbo Not implemented Any – dependent on isp NO Freeview (other than BT vision) MHEG Dependant on ISP Any – dependent on isp NO © BBC 2008Slide 24: Common IPTV/VOD models © BBC 20086a – Common models: Server (contains video) Server Side Video / Client Side Application Streamed Video Contains: - application code previously downloaded Set Top Box Instructions for video (play, ff, rw, pause) are sent to server 6a – Common models Disadvantages Slower to load video Longer round trip to server battling against bandwidth Advantages Greater capacity for video on servers than set-top/pc © BBC 20086b – Common models: Server (contains video and app) Server Side Video / Server Side App Streamed Video AND Streamed Application contains: - no storage in the box Set Top Box Instructions for video (play, ff, rw, pause) AND to navigate the app are sent to server 6b – Common models Disadvantages Slower to load video/app Longer round trip to server battling against bandwidth /contention ratio Advantages Greater capacity for video Larger app size for more functionality © BBC 20086c – Common models: 6c – Common models Set Top Box/PVR Client Side App / Client Side Video contains: application code previously downloaded video previously downloaded Disadvantages Inability to leverage server for capacity. Advantages Quick seamless transitions between video and scenes. Store app locally and take box from a to b (i.e. to a friends house) © BBC 20086d – Common models: Set Top Box/PVR Peer-to- Peer Video / Client Side Application contains: application code previously downloaded video streamed from other pcs/boxes 6d – Common models video video video video Disadvantages Longer round trip to through network Advantages Leverage other PC/set-tops with the same video for speedy download © BBC 2008Slide 29: IPTV PC MOBILE STB BROWSER APP MHEG 1.06 MHEG Turbo ICTV MEDIA ROOM Mozilla IE Windows Media Player Real Player Flash Liberate Middlewares on devices Joost Bablegum © BBC 2008Slide 30: Other Factors © BBC 20087 – Other Factors: 7 – Other Factors Digital Rights Management (DRM) Security (logging in / privacy) Messaging Mobile Devices Authoring Video Delivery Games consoles User experience & design © BBC 2008IPTV Overview: IPTV Overview Thanks for your time A n y Q u e s t i o n s ? © BBC 2008 You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
bbc_tvp_what_is_iptv rdxrdx Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 44 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: March 11, 2011 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript IPTV Overview: IPTV Overview Presented by Paul Ashun TV Platforms Group © BBC 2008IPTV Overview: IPTV Overview Chapters: What is IPTV (as opposed to internet TV) ? What is VOD (as opposed to IPTV) Middleware and Video Common IPTV Models Demos / Examples Other factors 7. Questions © BBC 2008Slide 3: What is IPTV (and what is internet TV) © BBC 20081a - What is IPTV: 1a - What is IPTV Still evolving Digital TV delivered using technologies used for computer network. Internet Protocols (http, rtsp, igmp) A TV like ‘quality of service’ (always on, reliable) Can be ‘live’ or pre-recorded (on-demand) Usually over a managed/closed network Eg. Virgin TV, Tiscali TV, BT Vision © BBC 20081b - What is Internet TV: 1b - What is Internet TV Digital TV delivered using technologies used for computer network. Internet Protocols (http, rtsp, igcmp) No guaranteed ‘quality of service’ Usually delivered via open-internet / un-managed network Eg. YouTube, BBC iPlayer on browser/PC © BBC 20081c – Managed Networks: 1c – Managed Networks Control over bandwidth allocation contention ratio content } Controlled ‘quality of service’ © BBC 20081d – Open Internet (Unmanaged networks): 1d – Open Internet (Unmanaged networks) Variable bandwidth Higher contention ratio (20:1) Less control over content } Little control over ‘quality of service’ © BBC 20081e – Open Internet (Unmanaged networks): 1e – Open Internet (Unmanaged networks) The BBC is working to ensure quality of service with ISPs. This will possibly change the definition of IPTV through the consensus that the quality of service is good over the open internet © BBC 2008Slide 9: YouTube PC iPlayer FreeSat Virgin VOD Tiscali TV Orange TV BT Vision Open Internet Managed Network TV iPlayer (on Virgin) © BBC 2008Slide 10: Copper wire / fibre Compression/ Encoding/ Encryption Head end to Capture TV How to capture/create IPTV © BBC 2008Slide 11: Mobile Device Wifi / wimax Cable Set-top Box Hybrid fibre coax Network ADSL Set-top Box Freesat Tiscali BT Vision [Orange TV] Virgin Computer Protocols - http - rtsp - igmp ADSL IPTV over the network cloud © BBC 2008Why IPTV and not Broadcast: Why IPTV and not Broadcast Two-way data flow (video on demand) Greater personalisation / tailored advertising Combined features Voice over IP Messaging/Recommendations Chat around content © BBC 2008IPTV- Key Protocols: IPTV- Key Protocols HTTP RTSP IGMP Request Response play pause record Firefox, Internet Explorer Real Player, Windows Media Player (streamed video) (hyoer-text- transfer-protocol) (real time streaming protocol) - connecting to multicast stream (TV channel) - changing from one channel to another (internet group management protocol) © BBC 2008Slide 14: What is VOD © BBC 20082a - What is VOD: 2a - What is VOD Select and watch video content (usually over a network) Either content is streamed or downloaded with/to the application Apps have a subset of VCR functionality including RWD, Pause, FFWD etc. Push VOD – delivered to set top box from broadcaster © BBC 20082b - What is VOD: 2b - What is VOD Not necessarily over IP. Eg. Push VOD Push VOD – delivered to set top box from broadcaster Eg. BBC iPlayer, YouTube, BBC Archive, Rimokon quiz, Tiscali, BT vision © BBC 2008Slide 17: Middleware And Video Codecs © BBC 20083a – Middleware: 3a – Middleware Set-top box software that allows us to write applications Affect application capabilities © BBC 20083b – Middleware: 3b – Middleware Middleware MHEG – (Freeview / Freesat) Liberate – (Virgin) ICTV/other – (once trialled by Tiscali; used by US web sites) HTML/JavaScript (KIT/Proprietary operators) Mediaroom (BT Vision) © BBC 20083c – Codecs: 3c – Codecs Compression/Decompression File extension specifies codec used to compress/decompress Lossy/Lossless © BBC 20083d – Codecs: 3d – Codecs Codecs H.264 MPEG4 MPEG2 WMV9 © BBC 2008H.264: H.264 1. Up to 50% in bit rate savings: Compared to H.263v2 (H.263+) or MPEG-4 Simple Profile, H.264 permits a reduction in bit rate by up to 50% for a similar degree of encoder optimization at most bit rates. 2. High quality video: H.264 offers consistently good video quality at high and low bit rates. 3. Error resilience: H.264 provides the tools necessary to deal with packet loss in packet networks and bit errors in error-prone wireless networks. 4. Network friendliness: Through the Network Adaptation Layer, H.264 bit streams can be easily transported over different networks. © BBC 2008Slide 23: IPTV/Internet TV Platforms/Operators OPERATOR MIDDLEWARE CODEC DELIVERY NETWORK MANAGED NETWORK Tiscali (client-side Java) h.264 ADSL YES BT Vision Mediaroom h.264 ADSL YES Virgin Liberate (Seac-change) Mpeg 2 Hybrid fibre co-ax YES Freesat MHEG 1.06 turbo Not implemented Any – dependent on isp NO Freeview (other than BT vision) MHEG Dependant on ISP Any – dependent on isp NO © BBC 2008Slide 24: Common IPTV/VOD models © BBC 20086a – Common models: Server (contains video) Server Side Video / Client Side Application Streamed Video Contains: - application code previously downloaded Set Top Box Instructions for video (play, ff, rw, pause) are sent to server 6a – Common models Disadvantages Slower to load video Longer round trip to server battling against bandwidth Advantages Greater capacity for video on servers than set-top/pc © BBC 20086b – Common models: Server (contains video and app) Server Side Video / Server Side App Streamed Video AND Streamed Application contains: - no storage in the box Set Top Box Instructions for video (play, ff, rw, pause) AND to navigate the app are sent to server 6b – Common models Disadvantages Slower to load video/app Longer round trip to server battling against bandwidth /contention ratio Advantages Greater capacity for video Larger app size for more functionality © BBC 20086c – Common models: 6c – Common models Set Top Box/PVR Client Side App / Client Side Video contains: application code previously downloaded video previously downloaded Disadvantages Inability to leverage server for capacity. Advantages Quick seamless transitions between video and scenes. Store app locally and take box from a to b (i.e. to a friends house) © BBC 20086d – Common models: Set Top Box/PVR Peer-to- Peer Video / Client Side Application contains: application code previously downloaded video streamed from other pcs/boxes 6d – Common models video video video video Disadvantages Longer round trip to through network Advantages Leverage other PC/set-tops with the same video for speedy download © BBC 2008Slide 29: IPTV PC MOBILE STB BROWSER APP MHEG 1.06 MHEG Turbo ICTV MEDIA ROOM Mozilla IE Windows Media Player Real Player Flash Liberate Middlewares on devices Joost Bablegum © BBC 2008Slide 30: Other Factors © BBC 20087 – Other Factors: 7 – Other Factors Digital Rights Management (DRM) Security (logging in / privacy) Messaging Mobile Devices Authoring Video Delivery Games consoles User experience & design © BBC 2008IPTV Overview: IPTV Overview Thanks for your time A n y Q u e s t i o n s ? © BBC 2008