Presentation of the W3CMedia Annotations Working Group

Activities

February 2009

Lausanne, Switzerland

Víctor Rodríguez, Jaime Delgado, Rubén Tous

Distributed Multimedia Applications Group

Universitat Politècnica de Catalunya

on behalf of:

W3C Media Annotations Working Group

Introduction W3C Web Video Group: to make video a "first class

citizen" of the Web Timed Text Working Group Media Fragments Working Group Media Annotations Working Group

Media Annotations Working Group (MAGW): to provide an ontology and API designed to facilitate cross-community data integration of information related to media objects in the Web, such as video, (audio and images).

M16031: Liaison Statement from W3C to MPEG (06/12/2008)

2

Working policies

Meetings: Weekly teleconference Every 3 months approx., face to face meeting

Decisions: taken mostly by consensus Participants: About 25 people from 13 organizations (both

industry and university)

Patents: W3C seeks to issue Recommendations that can be implemented on a Royalty-Free basis

3

MAGW Vision

4

User sees an API, simple

handling only texts and URI

(no special knowledge on

Semantic Web required)

An Ontology relates the

different metadata formats

(this is hidden to the user)

Mapping is provided by MAGW

Some formats in sight

Formats: XMP. This is the articulating base DublinCore ID3 (metadata in audio) EXIF (metadata in images) Media RSS IPTC (news) MPEG7 TV-Anytime FRBR (multilevel description) Youtube Data API Protocol Other: SMPTE, LOM, METS, Cablelabs ADI 2.0, MIX, VRA etc.

5

Documents Ontology for Media Object Use Cases and Requirements Ontology for Media Object 1.0 API for Media Object 1.0 Other deliverables:

A W3C Working Group Note for mapping the ontology to existing standards and solutions.

Collection of a corpus of metadata to demonstrate the mapping and translation. Implementation and interoperability reports. Tutorial or primer resources (if suitable and if resources are available). Propose eventually a new charter for follow on work.

2.0 version pursues integration with other W3C recommendations (fragments etc.)

6

Use Cases & Requirements (I) W3C Working Draft 19 January 2009 9 use cases, 13 requirements

r01: Providing methods for getting structured or unstructured metadata out of media objects in different formats

r02: Providing methods for setting metadata in media objects in different formats

r03: Providing in the API a means for supporting structured annotations

r04: Providing a means to access custom metadata r05: Providing the ontology as a simple set of properties

7

Use Cases & Requirements (II) Requirements (continued):

r06: Specifying an internal or external format for the ontology r07: Introducing several abstraction levels in the ontology r08: Being able to apply the ontology / API for collections of

metadata r09: Taking different roles in metadata processing into account r10: Being able to describe fragments of media objects r11: Providing the ontology in slices of conformance r12: Provide support for controlled vocabularies for the values

of different properties r13: Allow for different return types for the same property

8

MAGW & MXM Analysis

There is a joint set of desired features between: MAGW API MXM Video Metadata API (8.8 in N10290 MXM Architecture

and Technologies) Video metadata creation APIs difficult to be achieved Video metadata editing APIs difficult to be achieved Video metadata parsing APIs Video metadata presentation APIs

However, “setting” methods much more complex to be implemented.

Timeline may be a problem

9

Milestones

First Public Working Draft, Last Call WD, Candidate Recommendation, Proposed Recommendation, Recommendation.

August 2008: First teleconference

10

More information

Chairs of W3C Media Annotation Working Group Soohong Daniel Park (soohong.park@samsung.com) Joakim Soderberg (joakim.soderberg@ericsson.com)

For more info, there is a public mailing list: public-media-fragment@w3.org. (about 500 messages exchanged from Aug.08)

Webpage: http://www.w3.org/2008/WebVideo/Annotations/

11

Presentation of theMedia Annotations Working Group

February 2009

Lausanne, Switzerland

THANKS!

Questions?