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HyStream Architecture: Enabling Open Hypermedia for Temporal Metadata Streams

Explore the HyStream Architecture for Open Hypermedia applied to continuous metadata streams, including media delivery, branching media applications, and the use of temporal metadata for events description. Discover its implementations, such as the Temporal Linking Service and Web Agent Smart Spaces.

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HyStream Architecture: Enabling Open Hypermedia for Temporal Metadata Streams

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Presentation Transcript

  1. The Pipeline of Enrichment Don Cruickshank (sotonoid) 15th August 2001 The 7th International Workshop on Open Hypermedia Systems

  2. HyStream • Open Hypermedia applied to Continuous Metadata Streams • Archived / Near-live / Live scenarios • Media delivery • Local media (hard disc, video recorder) • TCP streaming (play during download, TV) • UDP streaming (real-time streaming, e.g. RTP) • Branching Media

  3. Seminar application

  4. Open Hypermedia • Media and Metadata arrive via different network streams • Links are stored separately from the media • Generic Links supplied by the Fundamental Open Hypertext Model (FOHM) • Multiple startpoints used to represent multiple video formats

  5. Temporal Metadata • Startpoint – a video • Endpoint – a video, slide or person • Time – media clock value • Resource – the resource (e.g. projector) • Type – “appear” or “disappear” • Label – human readable label

  6. HyStream Architecture

  7. HyStream Architecture

  8. HyStream Implementations • Temporal Linking Service • HTTP-alike protocol • Client software ‘downloads’ a dynamically created linkbase over time • SoFAR (Agent based) • Matchmaking service • Subscription mechanism • Ontological representation of temporal events • Web Agent

  9. Smart Spaces • The Meeting Room Scenario • RDF representation • Automated metadata capture • RFID tags • 802.11b • Smartboard

  10. Recording Sheet

  11. Authoring and playback • Simultaneous authoring and playback • Client -> Server • Temporal metadata used to describe events • “Slide 2 appeared at 80 seconds into the seminar.” • Server -> Client • Temporal links streamed to client • No requirement for backchannel communication during normal playback

  12. Summary • Open Hypermedia • Temporal Metadata Streams • Ontological Representation • Smart Spaces

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