1. TV-Anytime Metadata Vassileios Tsetsos, Ph.D. btsetsos@di.uoa.gr

2. Introduction mTV Anytime Forum founded in 1999 mGoal: Creation of an open public standard applicable in postproduction, distribution, consumption and interaction of DTV content mSeveral working groups mVarious aspects of standardization ëBusiness models, system, transport interfaces, content referencing, metadata, rights management and protection

3. TV-Anytime Concept mTV-Anytime will allow viewers to watch the programmes they want, in the way they want, and when they want mTV-Anytime viewers will be able to explore and acquire TV content from a variety of sources, including traditional broadcast and new on-line interactive services – for presentation at any time mTV-Anytime will combine the immediacy of television with the flexibility of the Internet

4. Service Creation Content Creation (and Associated Metadata) Pushed or pulled service  transaction TV-Anytime - Offer, demand, supply... & Metadata User / Agent filtering Attractors Service Provider or third party from e.g. the EPG/SI or from a web page Search and Selection Exchange of metadata CRID + URL Resolving mechanisms Display or Store content and metadata Delivery metadata Rights & Security

5. Viewing Copying Metadata Actors Input Output Content Creator Content Provider Service Provider Access Provider Personal Digital Recorder Consumer Selecting StoringConsuming TV-Anytime - Metadata Flow Original descriptive informationE.g. Electronic Programme Guide E.g. preferences

6. Content Reference Identifier (CRID) mA way to select multimedia assets mTime and location independent mCRIDs are resolved to locators mlocator= transport protocol + URI mCRID CRID://futureinteractiontv.org/channel11 mLocator dvb://123.123.123 ftp://ftp. futureinteractiontv.org/f/mov.mov mTV-Anytime viewers will be able to explore and acquire TV content from a variety of sources, including traditional broadcast and new on-line interactive services – for presentation at any time mTV-Anytime will combine the immediacy of television with the flexibility of the Internet

7. Metadata Process Model mContent creation: metadata from different sources are collected and harmonized mDelivery: transmission of metadata, local search and navigation mConsumption: consumer preferences are exploited along with the content metadata

8. Metadata Definitions mMPEG-7 DDL based on XML Schema has been adopted mA unique namespace is reserved: mxmlns:tva=“urn:tva:metadata:2002”

9. Metadata Definitions mContent description metadata mTitle, synopsis, file format, bit-rate, program genre, rating, reviews mInstance description metadata mProgram schedule (EPG), channels, service information mConsumer metadata mUsage history, user preferences mSegmentation metadata mTemporal location of segments, segment title, …

10. API Applications E.g. Nested KLV representation of values Schema ID XML Schema Library decoding Descriptions Parsing Common structure and semantics§ Validated Descriptions Values Dictionary XML Schema Database Metadata Authoring MPEG2 TS Private Sections DSM CC Object Carousel IP transport Update mechanisms End-to-end delivery and management Encoded XML description (e.g. binarised, zipped) Encoding & transport Decoding, parsing & processing E.g ARIB, ATSC, DVB, W3C

11. Metadata Definitions http://www.etsi.org/WebSite/Technologies/TVAnytime. aspx http://www.bbc.co.uk/opensource/projects/tv_anytime_ api/ http://backstage.bbc.co.uk/feeds/tvradio/doc.html