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METADATA Paul Walland(MetaVision) Pierre Pleven (Enrevi) Everything we (You?) always wanted to know but were afraid to ask Presentation inspired by IAB.

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Presentation on theme: "METADATA Paul Walland(MetaVision) Pierre Pleven (Enrevi) Everything we (You?) always wanted to know but were afraid to ask Presentation inspired by IAB."— Presentation transcript:

1 METADATA Paul Walland(MetaVision) Pierre Pleven (Enrevi) Everything we (You?) always wanted to know but were afraid to ask Presentation inspired by IAB seminar 25-27 Feb 2001 in Montreux IST Concertation Meeting Brussels March 5th 2001

2 What People say... zMetadata is data about data (John Doe) zLifeblood of e-commerce and broadband (A silicon Valley VC) zAn item of metadata is a relationship someone claims exists between two entities (A British mathematician)

3 Metadada: The Definition! zThe Essence:Sound, Image, Text xEx: Captions, Graphics,Moving image,Subtitles,Music.. zThe Metadata: Data about the essence xEx: Title, Credits, Sampling rate, Aspect ratio, Supplier phone no, Archive reference zContent=Essence+Metadata. zContent is what is being traded zTrading creates value.

4 Metadata: The value... zValue : better control of production process. zValue : more revenue from existing content. zValue: New contents and new services zMetadata changes content into assets

5 Better control of production process zMetadata exists throughout production process: xDesign, Pre-production, production,post- production, on air mgmt, archives, audience data. zMetadata belongs to several classes: xTechnical, Rights, Administrative, Content description. zValue is created through Consistency, Coherence and Conservation of metadata

6 More revenue from existing content. zArchives can be better valorised. zContent has built-in re-purposing facilities. zRights can can be valorised through traceability. zTechnical quality can be maximized through traceability. Metavision

7 New services! z Management of Metadata is key to: yEPG : Content description y TV-Anytime : Content description, Client profile yVOD: Content description, rights management yMedia Interactivity: Objects description yMedia Personalisation: Objects description, client profile Enrevi

8 Metadata: Technical aspects zStandards and Bodies zMetadata types zMetadata granularity zMetadata logistics zMetadata of metadata zMy_metadata

9 Standards and Bodies zSMPTE: ySMPTE 319M (MPEG re-coding data) ySMPTE 330M (UMIDs) ySMPTE 336 (KLV coding) ySMPTE 335 & RP 210 (Metadata Dictionary)

10 DVB and Metadata... zMHP 1.0 Local Interactivity yMetadata in SI zMHP 2.0 Internet Profile (XML) zMHP 2.x Local storage (TVAnytime) zMHP 3.0? 3D, Personalisation, avatar (MPEG4?)

11 And the rest... zISO (MPEG-7, MPEG-21) zW3C (XML) zAAF zPro-MPEG (MXF) zBBC (SMEF) zEBU (P-Meta) zTV-Anytime zLibrarian Community (Dublin Core)

12 Metadata types: zContents Description zAdministrative zRights zScene description zClient profile z Informative z Technical z Historical z Intimate metadata Non exhaustive…

13 Descriptive Metadata zTitle, zIdentification zContributors (credits) zGeneral scene description zetc.

14 Technical Metadata zData that assists in the handling of the essence - coding decisions, bit-rates, frame types and so on. zData that describes objects inside essence: yCamera position, camera movement, Camera id y 3d model, objects position and shape.

15 Historical Metadata zThe memory of the content zWhat has happened to the material in the past - format conversion, compression types and parameters etc.

16 Rights Metadata zDangerous area! zAll information pertaining to ownership of material and rights payments conditions zCan also include legal information

17 Intimate Metadata zContent in the form of data but intimately connected with the essence zData which is captured with the essence in order to augment its value z… to be discussed further by MetaVision. z... to be discussed further by Enrevi.

18 Pictorial representation

19 Granularity and Validity of Metadata zMetadata can be relevant to an entire sequence, or shot, or may be only relevant to a particular frame or portion of a frame zMetadata may only be valid over a particular range (even if it is present outside that range)

20 Availability of Metadata zThe timing of the metadata may not be critical, or it may need to be synchronised with frames or pixels zMetadata may need to be repeated every frame, or it may only need to be sent whilst it is valid

21 The carriage of Metadata zUnique identification of each logical segment (UMID) zSynchronisation of metadata with relevant essence zEnclosing of essence within metadata wrappers zHandling of streams and files

22 XML and KLV zXML selected by MPEG-7 zSMPTE considering using DTDs (Document Type Definition) to allow transformation of KLV encoded metadata into XML zKLV language independent, XML is not zEssence difficult to handle in XML, easy in KLV zXML easy to process in IT systems, KLV is not

23 TV-Anytime Dublin Core EBU P/META Common framework based on W3C s XML family SMPTE MPEG-7 XML : Metadata of metadata ? Source : EBU TECHNICAL REVIEW - September 2000 J.-P. Evain

24 My_Metadata zWorksession at ___ in ___ zMy_Metadata(Metavision) zMy_Metadata(Enrevi) zMy_Metadata (X,Y,Z)

25 My_Metadata (Enrevi) zEnrevi: Enhanced reality for the video zStrong emphasis on production costs and operability. zBroadcast : Camera tracking, graphics creation, keying, real time. zBroadband: Mpeg4 scene description. zBroadband: Mpeg7 metadata.

26 My_Metadata (Enrevi) zEnrevi: Enhanced reality for the video zStrong emphasis on production costs and operability. zBroadcast : Camera tracking, graphics creation, keying, real time. zBroadband: Mpeg4 scene description. zBroadband: Mpeg7 metadata.

27 My_metadata(Enrevi): Camera z x,y,z, pan, tilt, zoom, focus. zMulticamera: Camera id. zGenerated by proprietary technology... zStored VBI, Audio, Tapes... zMpeg4 encoding.

28 My_metadata(Enrevi): 3D scene z3D objects z3D scene reconstruction zToday VRML zTomorrow MPEG4 3D? z

29 My_metadata(Enrevi): objects in scene zPlayers tracking zEncoding of trajectory and id. zBroadcast enhancement z3D reconstruction.

30 My_Metadata Enrevi Demos. zProfiled scene composition z3D scene reconstruction


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