1. Streaming Video: Instructional Applications and Considerations Faculty Development Institute Summer 2000

2. The Quest for Scalable and Effective Instructional Delivery Systems

3. Streaming Video: Project Objectives #1 Be on the cutting edge not the bleeding edge

4. Streaming Video Defined One way compressed digital distributionOne way compressed digital distribution Live or on demandLive or on demand Point-to-pointPoint-to-point MulticastMulticast

5. Streaming Video: Project Objectives Distance LearningDistance Learning –Live streaming to the desktop –Anytime, anyplace video-on-demand –Use video-on-demand to replace videotape backup –Video-on-demand as supplement to web-based courses

6. Streaming Video: Project Objectives CampusCampus –Incorporate into class presentations –Lecture review –Out of class video assignments video assignmentsvideo assignments

7. Streaming Video: Project Objectives Continuing Education on-demand seminarsContinuing Education on-demand seminars Faculty and staff trainingFaculty and staff training University marketingUniversity marketing

8. Streaming Video Evaluations High and Low Bandwidth TestsHigh and Low Bandwidth Tests Encoding methodsEncoding methods Storage requirementsStorage requirements Impact on campus local area networkImpact on campus local area network Reliability over wide area networkReliability over wide area network Post-production capabilitiesPost-production capabilities Support requirementsSupport requirements

9. Streaming Tests Real Networks G-2Real Networks G-2 3CX3CX Cisco IPTVCisco IPTV Cam-Vision (MPEG II)Cam-Vision (MPEG II) IBM Video ChargerIBM Video Charger FVC I -StudioFVC I -Studio QuicktimeQuicktime Microsoft Media Technology (ASF)Microsoft Media Technology (ASF)

10. Hardware/Software Needs NetworkNetwork ServersServers User WorkstationsUser Workstations Application setApplication set

11. Quality of Service (QoS) Ability to guarantee timely delivery of dataAbility to guarantee timely delivery of data Important in VideoImportant in Video –Video needs relatively large bandwidth –Can’t tolerate delay –Data loss effects video and audio –No time to resend –Need priority routing

12. IP - Internet Protocol PROSPROS –It’s “Everywhere” –Cheap –Well known –Flat Rate Pricing (Usually) CONSCONS –No QoS –Subject to information loss –Relies on public network

13. Video Quality What quality is neededWhat quality is needed Based on Bandwidth and QoSBased on Bandwidth and QoS Bandwidth = QualityBandwidth = Quality Frame rateFrame rate Picture size (pixels)Picture size (pixels) Picture qualityPicture quality Compression = lossCompression = loss

14. Server Network Usually only part of network you controlUsually only part of network you control Must support all streams individuallyMust support all streams individually Private modem pool?Private modem pool? IntranetIntranet Extra capacity neededExtra capacity needed

15. Transport Network Public networksPublic networks IntranetIntranet PrivatePrivate

16. User Network (local ISP) POTS and modemsPOTS and modems ISDNISDN DSL, Cable modems, etc.DSL, Cable modems, etc. IntranetIntranet

17. Acquisition Start with best qualityStart with best quality Live and/or for storageLive and/or for storage Classroom feeds and MultimediaClassroom feeds and Multimedia Streaming speeds and formats must be decided before acquisitionStreaming speeds and formats must be decided before acquisition Encoder Server/workstationEncoder Server/workstation Possible local temporary storagePossible local temporary storage Send to archive storage by networkSend to archive storage by network

18. Storage Large amounts requiredLarge amounts required High speed accessHigh speed access Expandable disk arraysExpandable disk arrays Server(s) to manage storage accessServer(s) to manage storage access NetworkNetwork

19. Post Production Adding linksAdding links Defining segmentsDefining segments CatalogingCataloging TestingTesting

20. Cataloging How to find the info one wantsHow to find the info one wants Only full programs or clips within programsOnly full programs or clips within programs With application or external databaseWith application or external database Web and other access methodsWeb and other access methods

21. Retrieval/Broadcast Security (who gets what)Security (who gets what) Large delay on live feeds (20-30 seconds)Large delay on live feeds (20-30 seconds) Streaming Server(s)Streaming Server(s) NetworkNetwork Workstation software/hardwareWorkstation software/hardware

22. Storage Requirements Low bandwidth less than 1 mb per minuteLow bandwidth less than 1 mb per minute High bandwidth 5 mb plus per minuteHigh bandwidth 5 mb plus per minute TV Broadcast 45 mb per secondTV Broadcast 45 mb per second