Handing Over the Keys Enabling User-Controlled Metadata Doug Schepers, W3C

Metadata is Locked Away media files are born with metadata media files accumulate metadata access to metadata is context-limited

Flavors of the Data intrinsic width, height, duration extrinsic title, author, tags, timestamps, geodata automatic vs. manual authoritative vs. user-generated

Default Metadata Display play status control timeline playback progress download progress position marker control total length tag hotspot rich comment hotspot lots of other stuff elapsed time total time

Temporal Data tags rich comments

Locative Data

Meta-Authoring

Access and Accessibility authors are often lazy or busy many eyes, many ears, many hands challenge in too much data metametadata

Social Networks Horde Metadata social networks accumulate information from “meta-authors” comments and tags timestamped information everything is lost when it is saved

Dynamic Content is Crippled information about details is important for presentation authors only have access in design tools data is only available at design time

3 Keys provide universal access to metadata deploy uniform metadata format encourage sites to free up data

MAXIM Metadata Access and eXtensible Information for Media specification read, write, and save client-side and server-side

Too Much Confusion Here profusion of formats packaging, embedded, external binary, text, XML each has special niches should be uniform, if not universal RDF (XMP?)

Uniformat need standard on what formats should do should address spectrum of use cases benefit across entire toolchain from videocamera to editing suite to authoring tool to dynamic site to tagger to end-user, and back

Rich Linking browser can link to specific contexts times and ranges named timestamps keyword cueing search engines tags, keywords, authors

Encourage Openness emphasize application, not content control site as typewriter, not as library pickpocket data for justice browsers can give advanced “Save As” end-users can pick and choose

W3C Video on the Web Workshop December 2007, San Jose, California and Brussels, Belgium Doug Schepers W3C Team Contact, SVG, CDF, and WebAPI Working Groups