/conferences/spr2004/presentations/verharen/verharen.ppt

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  • Edutainment: science quiz, Polygoon: historical video assets from 1930 till now DelayTV ( facility to see again already broadcasted programs from public Television)
  • Movement disturbances
  • Met VU, UvA en Tilburg

Transcript

  • 1. Behind the Scenes: SURFnet Video Portal The next generation of streaming video services for research and higher education in The Netherlands Egon Verharen Innovation manager Advanced Services <egon.verharen@surfnet.nl>
  • 2. SURFnet
    • The national computer network for higher education and research in the Netherlands
        • 150 member institutions (universities , colleges, research centres, academic hospitals and scientific libraries)
        • approx. 750.000 users (students, employees)
        • SURFnet is a subsidiary company of the SURF Foundation
  • 3. SURFnet 5 : advanced wide area network
    • Backbone: 2x 10 Gbit/s
    • Client connections:
    • up to 1 Gbit/s
    • Multicast enabled
    • Native IPv4/IPv6
  • 4. Not only sufficient bandwidth towards the institutions
    • 20.000 students 10-100 Mbit/s at home in fiber-to-the-dormitory initiatives
    • Growing amount of wide open ADSL users at home (SurfSnel ADSL): 2-8 Mbit/s
    GEth sw-eth
  • 5. Where it started
    • Dutch ADSL Trial ’98-’99
      • technical pilot in Amsterdam appr. 1000 residential users (20 % student)
      • KPN Telecom, NOB Interactive, SURFnet
      • early adopters, heavy internet-users
      • fast Internet and video- and audio-on-demand services all based on internet-protocols
      • News on demand
      • Edutainment
      • Polygoon (NIBG)
      • Weather on demand
      • Clips
      • Public television (live & delayTV)
      • Film trailers
      • Events
  • 6. Where it started and sometimes stopped….: SURFnet NOB (SNOB) pilot ’00-’02
    • Only for member institutions > 8Mbit/s
    • delayTV (watch TV one week in return)
    • Live Ned 1, 2 en 3 (Dutch Public Televison)
    • First experiments with DVD quality (MPEG-2)
    • Service had to stop because of rights management of assets!
    • but….. returned in 2003 with FirstMileTV (supported by all public broadcasting companies)
  • 7. Where it started: SURFnet Audio- and Videohosting service ’99- ’03
    • low-end streaming service for member institutions
    • RealMedia, Windows Media and MPEG-1 through Xing Streamworks and Bitcast plugin for Real, Xing mp3
    • URL clickable streams (can be added to webpages)
    • 500 MB free storage
    • live ‘broadcasting’ (on request)
  • 8. Where it started: Av@lon pilot (2001)
    • ‘ first’ educational streaming pilot
    • University Groningen (RUG), Netherlands Institute of Sound and Visions (NIBG) and SURFnet
    • 120 hr streaming video and 60 hr audio selected by RUG, provided by NIBG and streamed by SURFnet AV hosting service
    • used for education
    • Themes/courses: disaster journalism, political propaganda in movies, radio and television, and historical movie-analyses
    • Integration in Blackboard
    • Video editing tools (virtuele snijmachine)
    • URL: http://coo.let.rug. nl / avalondemo
  • 9. Conclusions Av@lon pilot
    • Streaming makes available educational content easier and more efficiently
    • Streaming technology and internet network infrastructures are ready for educational usage of streaming
    • ‘ Order and delivery’ process needs improvement
    • Multi-disciplinary approach is essential
    • Teachers and students need new skills and support
    • Follow up (2003): DAVIDEON project (1000 hr) development of educational scenario’s
  • 10. Collaboration
    • Projects and knowledge exchange in Webstroom group http://www.edusite.nl/webstroom
  • 11. Webstroom projects
    • Round 2 (2003-2004)
    • 5 selected projects
        • Faculty on human movement science (VU Amterdam)
        • Video reflection for student ( graduate school on teaching and learning UvA)
        • Video registration of competences (Small Bussines and Retail INHolland)
        • Cultural Antropology (Leiden University)
        • Social Law (Tilburg University)
    • more emphasis on evaluation of educational aspects
  • 12. And much more projects
    • Davideon (Groningen University, Windesheim, VU Amsterdam, NIBG)
    • Digiclass ( NHL, Institute Education & Communication (IEC),University of Groningen, Universitary centre for teacher training college (UCLO)
    • Digital language classroom (Groningen, Leiden, Utrecht and Tilburg Universities)
    • …… . and much more
    • http://www.edusite.nl/webstroom/projecten_nederland
  • 13. SURFnet Video Portal: since 2003
    • Combining the results of projects and other initiatives in a ‘next generation streaming video environment’
      • Production
      • Distribution
      • Information retrieval
      • Online video editing and conversion tools
      • Manuals and instructional content, workshop
      • Community (forum)
  • 14. SURFnet guide/manual for producing streaming video
    • Manual in PDF format
      • UvA, VU and UVT
      • Production aspects (storyboards, recording and editing audio and video)
      • Publishing and distribution (on the internet)
      • Copyright issues
      • Examples
    • Workshops
  • 15. Workshop
  • 16. SVP distribution: Storage of streaming files
    • Windows Media
    • Real media
    • Quicktime
    • MPEG streaming server: Kasenna Mediabase XMP
      • MPEG-1
      • MPEG-2
      • (ISMA) MPEG-4
    • 1 GB storage for free/institute
    SURFnet streaming servers with file management environment
  • 17. Information retrieval: Search and browse facilities
    • Not easy to find streaming files
    • Solution: attach metadata tag with descriptive information to streaming file based on Qualified Dublin Core standard
  • 18. SVP Metadata model Title Title.Alternative Creator Subject Description Description.Abstract Publisher Contributor Language Relation Coverage.Spatial Coverage.Temporal Rights Date.Created Date.Valid Date.Available Date.Issued Type Format.Extent Format.Medium Identifier Source Element printed in green are required fields
  • 19. Information retrieval: Search engine organization Y organization X SURFnet Search engine streaming server streaming server streaming server streaming server streaming server streaming server Metadata input
  • 20. Information retrieval: end user web interface
  • 21. File protection
    • Authentication layer to make streaming files only available to selective user group: Hostname based authentication (no need to distribute username – password to end-users)
      • File is only available to one or more organizations that are part of the SURFnet community.
      • File is available to all SURFnet member organizations
      • File is publicly available (no file protection)
  • 22. File protection: Admin interface
  • 23. Example of file protection end user screen
  • 24. SURFnet media conversie service AVI MPEG-2 MPEG-1 MPEG-1 MPEG-4 Real WMV /ASF Quicktime input formats output formats Convert source file to streaming media file types through web application
  • 25. Transcoding tool : interface
  • 26. Editing tool : selection Virtual Cutting Machine
    • Developed by Andre Rosendaal (Groningen University)
    • Select part of file
    • Reference to the selection in the original file
    Fragment
  • 27. Editing tool : playlists
    • Combine several streaming fragments into one stream
    File Y selection 2 playlist A File X selection 1 File Z selection 3
  • 28. Editing tool : interface /s/surfnet/real/tnc2003.rm
  • 29. Editing tool : interface
  • 30. SVP asset management
  • 31. SURFnet Video Portal website
    • http://video.surfnet.nl/
    • http://videosearch.surfnet.nl/
  • 32. Enhancements: SVP2
    • Person and Realm based access control
      • Through institutes authentication services
    • Presentation tools
    • More mediatypes
    • Improvements in batch upload, batch asset mgt
  • 33. Person-based access control
    • Using RADIUS infrastructure or A-Select (authentication selection infrastructure)
  • 34. Person based access control
  • 35. SVP2 mediafile protection
  • 36. SVP2 asset management
  • 37. Batch mgt
  • 38. International
    • Terena TF-Netcast Task Force Creation of a portal for live-streaming announcements
    • Terena TF-stream Task Force streaming recommendations for audio/video streaming and conferencing over the Internet (ended 2002)
    • JISC and ALT (new streaming pilots)
    • Internet2 (super high quality streaming)
  • 39. Related topics (not discussed here)
    • videoconferencing (also part of the Webstroom community); VC has its own dynamics
    • SURFnet TV, education TV, TV channels
    • Live streaming of events (conferences, seminars, lectures)
  • 40. Conclusion/success factors
    • Technology and networks are ready
    • knowledge dissemination inside and between institutions essential
    • Stimulate small scale pilots (technology  education)
    • Multi-disciplinary approach essential
    • Building the chain between:
    • Students
    • Teachers
    • Learning technologists
    • Librarians
    • AV specialists
    • Network technologists
    • Content providers
    • NREN