Podcasting Everything

Andy WasklewiczTechnology Architect

Podcasting EverythingStanford School of Medicine

• 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

SoM History of Classroom Capture

Classroom Capture Details

• Downloadable video! Courses

! Grand rounds

! Special educational events

• 8000 events/year in educational spaces

• 2500 hours/year of classroom capture content

New Educational Facility

Students

• Level of expectation

• Students demanding multiple formats

• Requesting video anywhere, anytime

• 85% of students own laptop

• 83% own portable media device

“Why limit the capture system to classroom content, let’s open it to the entire school.”

SoM Administration

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

Prototype System

Podcast Producer Episode Engine

Publish

File Server

Shared Storage

/Xgrid Cluster

Primary Master

Failover

iTunesU

Youtube

Primary Master

Failover

Media Asset Management

Metadata

Failover

Encoding Benchmarks

Source Output Time

XGrid

Episode Engine

56 minute class12.3 GB DV file640x48030 fps

640x480 m4v480x320 m4v176x144 3gp

2 hours 37 minutes

56 minute class12.3 GB DV file640x48030 fps

640x480 m4v480x320 m4v176x144 3gpm4a Audio

6 minute 30 seconds

Encoding/Storage Hardware:(4) 8 Core XServes8 GB RAM per4 GB Fiber Cards4.8 TB SAS Promise RAID

Sample Output

Course MedCast

Documentary Procedures

Estimated Output

• Currently average 25 podcasts a week

• Expectation of more than doubling output in 2009-2010

Workflows

• iTunesU! Public

! Private

! Community

• Youtube

• SoM Web Portal

• Learning Management Systems

• Internal portals

Unique deployments

• LKSC master control rooms

• Simulation centers

• Inter campus sharing

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