Interactive digital TV and multimedia Interactive digital TV and multimedia servicesservices

Dr. Matevž Pogačnik

Faculty of electrical engineering, University of Ljubljana

TEMPUS RICUM workshop 4. - 5. june 2012

Durres/Tirana Albania

OutlineOutline

� Current trends in multimedia services and ICT

� Technologies overview

� IPTV

� HBBTV

� Over-the-top TV

� User experience

� Conclusion

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CurrentCurrent trendstrends in ICTin ICT

� Broadband connections are available

� Fiksed and mobile

� No. of MM supported devices is growing rapidly

� 50 bilion until 2020

� 100 milion smart TVs until 2014

� Share of mobile devices is increasing

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MM MM servicesservices & & interactiveinteractive digitaldigital TVTV

� All kinds of services

� informational, entertainment, educational, social networks, sports, eHealth, municipality info,…

� Interactivity!

� Requires a return channel

� Allows for added value in service consumption

� Personalized data access and service consumption

� Inclusion of end users into LIVE shows (voting, quiz participation,…)

� Real time sports results

� Available on a number of platforms

� iOS & Android phones and tablets, “smart TV”, personal PCs

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television� Internet

Internet + televisionInternet + television

ITV ≠ TV + PC55

IPTVIPTV

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IPTV IPTV examplesexamples

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HighHigh--levellevel IPTV IPTV architecturearchitecture

� IPTV domain (ITU-T IPTV GSI)� Content Provider (CP)

� Content/rights Owner

� Service Provider (SP)

� Head-End

� DRM/CAS

� Content Processing/Serving

� Network Provider (NP)

� (Content) Delivery

� End-User – Consumer (EU)

� Home Network

� Terminal Equipment

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Standard Standard verticalvertical IPTV IPTV architecturearchitecture

� Environment

� Servers

� Encoders

� Players

� Network

� Terminals

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� Terminals

� STB

� Tablets

� PCs

� Mobiles

Omrežje IPOmrežje IP

ProtocolsProtocols used in IPTVused in IPTV� Live streaming

� multicastand protocols

� IGMP

� Content on demand � Komunikacija: aplikacija

(terminalna oprema) –večpredstavni strežnik

� Protokoli za prenos –

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� Protokoli za prenos –aplikacijski sloj

� kontrola seje

� RTSP

� SIP

� HTTP

� podatkov(audio, video)

� RTP/RTCP

� SRTP/SRTCP

� TCP/UDP

� HTTP/TCP

� Personalizirane storitve� UNICAST!

IP

TCP UDP

RTPRTCP

RTSP

Seja Video podatki

Aplikacija

kontrolaseje

podatki

Unicast Unicast vsvs. Multicast . Multicast deliverydelivery

� Unicast

� One stream to one client

� Multicast prenosni način

� Simultaneous streaming of one stream to a number of clients

Unicast Multicast

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Benefits and drawbacksBenefits and drawbacks

� IPTV can provide a high-quality experience

� High quality content over controlled network

� Many applications and services (VoD, interactive apps related to content)

� It’s expensive

� STBs are expensive

� Controlled network is limited to providers “domain”

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HBBTVHBBTV

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iTViTV -- examplesexamples

Specification of HbbTVSpecification of HbbTV

• ETSI TS 102 796 v1.1.1 (June 2010)

• HbbTV is openly available industrial standard

• Merging of two technologies (Germany, France)

• Standard made by HBBTV consortium

• www.hbbtv.org

• ANT, APS, Canal+, EBU, France Télévisions, IRT, OpenTV, Philips, Sony, SamsungSony, Samsung

• A combination of many standards

• First devices available in 2009 (Germany)

• Official certification should start shortly

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Devices with support for HbbTVDevices with support for HbbTV

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ArchitectureArchitecture

• Broadcast:

• Transmittion of TV, radio and data signals

• Signalling for “broadcast-related” apps

• Transfer of “broadcast-related” apps and data

• Sinchronisation of apps and TV/radio/data services

• Broadband:

• On-demand transfer

• Transfer of “broadcast-related” and “broadcast-independent” apps and corresponding data

• Data exchange between apps and servers

• This also includes OTT TV!

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ArchitectureArchitecture

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Over the top technologies for digital TVOver the top technologies for digital TV

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iTViTV -- examplesexamples

Apple TVApple TV

� Provides different types of content (OTT)

� iTunes

� Netflix

� Youtube

� Vimeo

� Sports: NBA, NHL, MLB

� Home MM content from other (iOS) devices

� …

� Excellent user experience

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Google TVGoogle TV

� Very similar to Apple TV (OTT)

� Enhanced suport to Web browsing

� Similar user experience?

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Good examples Good examples ☺☺☺☺☺☺☺☺

� Mediateka RTVSLO (smartTV, iOS, Android)

� Siol TViN (PC, iOS, Android)

� Voyo (smart TV, iOS, Amdroid)

� Telemach 3DGO (iOS)

� Vreme LTFE (smart TV)

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Distribution mechanismsDistribution mechanisms

� Adaptive streaming over HTTP protocol

� Apple HLS

� Adobe dynamic streaming for flash

� Microsoft smooth streaming

� DASH - Dynamic Adaptive Streaming over HTTP

� Content quality is adapted to network throughput� Content quality is adapted to network throughput

� Usage of CDN - content delivery networks

� Distributes the networking load gographically

� Open interfaces allow for access to service data

� Any kind of content data

� Protocols: REST, SOAP over HTTP

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PlatformsPlatforms overviewoverview

� iOS

� Android

� Symbian

� Windows mobile / Windows 7

� Blackberry

� Web based platforms

� Smart TVs (HBBTV)

� PCs

� Mobile browsers

� Set-top-boxes

� One of the above platforms ☺☺☺☺

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User experienceUser experience

� User interface (UI)

� HW UI (e.g. devices, remotes)

� SW UI (e.g. User interface)

� User interaction (HCI)

� User experience (QoE)

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User interface User interface -- remoteremote

� Very important element

� Key points

� Simple to use

� Only important functionality

� Other interaction modalities (voice commands, gestures, touch screen...)

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OK

�

POWER MUTE

TV/WEBHOME

ConclusionConclusion

� Many platforms - many services

� OTT seems to be growing fast

� OTT services are based on open platforms, but there are many platforms and versions

� Supporting many platforms seems to be a winning solution

Consequences� Consequences

� Operators are facing difficulties due to increasing traffic

� Users are benefitiaries

� User experience is very important!!!

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Thank you for your attention!Thank you for your attention!

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