Wwdc08 stanford
- 1. Presentation Title Is 64 pt. Optional subtitles are gray, 42 pt. Session 000 These are confidential sessions—please refrain from filming or taking pictures. At the convention center, a movie will be placed here
- 2. Presentation Title Is 64 pt. Optional subtitles are gray, 42 pt. Session 000 These are confidential sessions—please refrain from filming or taking pictures. At the convention center, a movie will be placed here
- 3. Podcasting Everything Stanford School of Medicine Andy Wasklewicz Technology Architect
- 4. SoM History of Classroom Capture • 1970’s - Captured on 3/4 inch tape • 1980’s - Capture on VHS • 1988 - Streaming video via Real • 2007 - REAL downloadable • 2008 - Podcast Producer/Episode Engine prototype
- 5. Classroom Capture Details • Downloadable video ■ Courses ■ Grand rounds ■ Special educational events • 8000 events/year in educational spaces • 2500 hours/year of classroom capture content
- 7. Students • Level of expectation • Students demanding multiple formats • Requesting video anywhere, anytime • 85% of students own laptop • 83% own portable media device
- 8. “Why limit the capture system to classroom content, let’s open it to the entire school.” SoM Administration
- 9. Requirements • Must serve current and future facilities • Classroom capture materials must be on line by 5pm each day • Flexibility for production, programming and IT staffs to extend and integrate into current infrastructure • System capable of producing both standards based and proprietary formats • Integration with Learning Management Systems and classroom scheduling
- 10. Prototype System Podcast Producer Episode Engine/Xgrid Cluster Primary Master Primary Master Failover Failover Metadata Failover Publish Shared Storage Media Asset Management iTunesU Youtube File Server
- 11. Encoding Benchmarks Source Output Time 56 minute class 640x480 m4v 12.3 GB DV file XGrid 640x480 480x320 m4v 2 hours 37 minutes 176x144 3gp 30 fps 56 minute class 640x480 m4v 12.3 GB DV file 480x320 m4v Episode Engine 640x480 176x144 3gp 6 minute 30 seconds 30 fps m4a Audio Encoding/Storage Hardware: (4) 8 Core XServes 8 GB RAM per 4 GB Fiber Cards 4.8 TB SAS Promise RAID
- 12. Sample Output Course MedCast Documentary Procedures
- 13. Estimated Output • Currently average 25 podcasts a week • Expectation of more than doubling output in 2009-2010
- 14. Workflows • iTunesU ■ Public ■ Private ■ Community • Youtube • SoM Web Portal • Learning Management Systems • Internal portals
- 15. Unique deployments • LKSC master control rooms • Simulation centers • Inter campus sharing
- 16. Next Steps • Finalize Telestream Episode Engine integration • Final Cut Server for intermediate archive • Control/switching systems integration • Explore integration of screen capture tools (i.e. Screenflow) • Berkeley Opencast systems