[presentation PPT]

• 1. SURFnets streaming media initiatives Egon Verharen Innovation management, SURFnet [email_address]
  • Why streaming

• Past, present and future of SURFnets streaming initiatives

• Lessons learned

• Streaming components and organisation

2. Quotes & Provocationsby Dennis Glenn, NWU

• Tape is dead

• Delivery is king but content will rule

• Quality isnot(yet) important

• • quality of video

• • QoS

• Exposure is everything

• • Content is worth nothing if you dont show it

3. Digital Video: Similarities and Differences

• Network video

• Similarities:

• • formats (video H.261, H.263, MPEG 1/2) ; need fast network connections ; protocols (RTP)

• Differences :

• • interactivity! ; bitrates (esp. high quality) ; QoS reqs. ( bandwidth/throughput, delay/latency & jitter (variation in delay), synchronisation, packet loss)

Video Conferencing Like a telephone call Two - Way Call up or Answer Video Broadcasting Like watching Television One - Way Tune Inorenter URL Streaming Webcasting 4. Digital Video: Similarities and Differences Video Conferencing Video chat Like a telephone call Two - Way Call up or Answer typicalbitrates from 56 kb/s - 1,5 mb/s Video format (H.261, H.263, MPEG) transport protocol (RTP) fast network connection QoS (min. delay, min. jitter, synchronisation Video Broadcasting Streaming/Webcasting Like watching Television One - Way Tune Inorenter URL typicalbitrates from 28 kb/s - 8 mb/s Video format (H.261, H.263, MPEG) transport protocol (RTP) fast network connection QoS (jitter, synchronisation) -Network video 5. What & Why Streaming Media

• Streaming is buzz-word.

• • an adjective

• Many definotions

• • Push vs. Pull

• • Client-oriented vs. server-oriented

• • on-demand vs. live

• Streaming media: the real-time playing of a video-, audio- and/or datastream on a machine from the moment the data enters the machine.

content IT TelCo 6. Streaming media advantages

• Watching TV on your PC

• data does not need to be downloaded;

• high bitrate make high (video)quality possible;

• you can jump ahead (or back) in stream (vcr principle);

• you can broadcast/netcast live;

• suitable for tele-educatie,

• • but also information delivery.

7. Pieces of the puzzle

• Why digital video (network video/video broadcast)in education

Collaborative tools

• • Conferencing

• • tools

• • Multimedia

• • archives

live event streaming webbased virtual classroom 8. Digital Content management: driving forces AnalogDigital Costs ValueLARGE archives Everywhere and alwaysaccess Create once, distribute/use many Save and secure for (re)use 9. Developments in the content chain Program maker Internetprovider Website owner Internet host Channel Cable- operator Distributer Telecom operator Author Broadcast organisation Publisher Users/Viewer Distribution media A/V/D-material Format conversion classification logical ordering 10. Progression of E-value differentiated non-differentiated market Price premium Competitive advantage User needs relevant irrelevant ingredients goods services experiences 11. Past streaming projects

• SURF-ACE

• • Low-end (internet) streaming ->

• • • SURFnet video- and audiohosting service (99)

• Snelnet (98-00) ->

• • • SNOB (99)

• • • NAA in Academia (99- ..)

12. SURFnet audio- and video hosting service

• low-end streaming service for SURFnet customers

• RealMedia (500 conc. Streams), Windows Media andXing Streamworks (MPEG1), Xing mp3

• cust. Encoding; interface for uploading, downloading and testing

• streams via URL

• 500 MB diskspace

• live broadcasts (on request, fee)

• Tribute MM asop. mgt partner

• http://stream.surfnet.nl

13. Real Media

• Version 6 operational version (july 2000)

• Memory leak in v7 when live streaming

• Split live and VoD in two systems

• Licence: 500 concurrent streams (peak < 100)

• Live archiving

• SureStream upto 1 Mbit/s

• Real vs MPEG-1: two paths - server plug-in Bitcasting - native MPEG-1 support ? - Real 8 quality: VHS at 0,5 full screen, 0,22 half screen and DVD at 1 MB/s

14. Real Server 8 features

• Improved codecs (via Intel)

• QuickTime support

• Streaming mp3

• Streaming Flash 4

• Authentication(ports, IP-address, encoders, RealAdmin)

• Encryption between server and client is possible

• Performs best on Linux

15. Real live: multicast en splitting

• Backchannel multicast -establishes for each client a unicast TCP-connection as control channel - clients are logged, no. of clients limited by licence

• Scalable multicast - no connection between client and server - unlimited no. of clients possible - targetted atIntranets - combination with unicast sub-optimal

• Splitting - application level multicast - most deployed way of large scale live broadcasts - stable - new SURFnet service

16. Xing / MPEG-1

• MPEG-1:high quality video and audio only (mp3)

• Not used

• Taken over by Real Networks

• No further development

• Work-around fr SVP partners, that want to host ? - 20-50 GB RuG - 20 GB for SURFnet Relatiedagen

17. Windows Media

• Version 4.1 (july 2000)

• VoD and live

• Free encoder + server, NT only

• Recent small scale tests:- multicast works on server- up to 3 Mb/s - monitoring live broadcast limited compared to Real - MS MPEG-1 and MS MPEG-4 ?

• Extensive testing planned by Tribute - scalability- financed by op.mgt contract and SURFworks

18. SNOB - SURFnet NOB project

• Pilot service of NOB Interactive and SURFnet (resulting from Snelnet)

• for SURFnet-customers > 8 Mbit/s

• gathering experience with streaming media (MPEG-1;1.5 Mbit/s streams)

• NOBi: video platform plus content

• SN: 155 Mbit/s link to Hilversum

• SN: streaming multicast infra.

• http://snob.surfnet.nl

19. NAA in Academia

• Dutch Audiovisual Archive, NOBi, SURFnet and Film Museum

• content from NAA and FM for educational purposes

• potential: 500.000+ hrs. Start: MPEG1 encoding 1000 hrs.

• faculties FTTW, Journalism, communication and ULs of UvA, UNIMAAS, RUG, UU, EUR, OU, prof. educ. institutes and .

• 1999-2001

• new developments in video/IP and MM-indexering tested and deployed in live environment (in cooperation with VIP)

20. Metadata in NAA 21. Network topology NAA in Academia SURFnet 622 Mbit/sNAA/NOB University Faculty/UL 155 Mbit/s 34 Mbit/s- 155 Mbit/s ? ? ? MediaPark Hilversum videoserver 22. Roles/tasks technique

• student/docent

• • PC with browser, MPEG-1 player (software), good videocard

• • connection to institutes network/SURFnet

• • support

• Faculty/Univ. Library

• • non-congested LAN/switched LAN

• • connection to institutes network/SURFnet

• • support

• University/computing centre

• • non congested univ-netwerk

• • non congested connection to SURFnet

• • security/access restrictions

• • support

• SURFnet

• • - non congested national backbone

• • - connection to univ

• • - connection tomediapark NOB/NAA

• • - support

• MediaPark

• • - non congested netwerk

• • - support

• NOB/NAA

• • - videoserver/encoding/ streaming

• • - user interface/webserver

• • - content management

• • - support

23. NAA in Academia 24. Present Digital Video innovation projects

• • Showcase