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Transcript

  • 1. How FERNE Uses the Internet: The How’s and Why’s of Videostreaming
  • 2. Adam Schlichting Research Associate Department of Emergency Medicine University of Illinois at Chicago Associate Director
  • 3. The “Case” • This meeting is being recorded on a digital video camera • Videostreaming will allow these lectures to be accessed 24/7 from anywhere in the world • How is this done???
  • 4. Why Videostream? • Educational lectures can be viewed: • Anytime • Anywhere • By anyone with a computer
  • 5. What Equipment Is Necessary? • Video camera (digital or analog) • Fast computer with: • An audio/video capture card • Lots of storage • Lots of memory
  • 6. FERNE Equipment: The Camera • Canon XL1 DV Camera • Excellent sound, excellent picture
  • 7. FERNE Equipment: The Server • Why buy our own server? • Speed • Needed a computer with fast processor, lots of memory for videostreaming • Storage • Videostreamed files are big: 20 Mb • Intermediate files are huge: > 1 Gb • Cost of off-site server • About $20/month for 100 Mb
  • 8. FERNE Equipment: The Server • Dell PowerEdge 1400 • Osprey Video capture card • Audio card
  • 9. FERNE Equipment: The Server • Osprey Video capture card • RCA inputs, same as the back of your TV, VCR • Good audio card • Standard in computers, not in servers
  • 10. FERNE Equipment: The Software • Microsoft VIDCAP32 • Video Capture Tool • Intermediate step • (Package deal: Osprey video capture) • Capture from camera playback • Saves as *.avi • Import *.avi into Premiere for editing
  • 11. FERNE Equipment: The Software • Video Editing • Adobe Premiere • Professional video editing software • Mouse driven • Cut/Paste • Crop • Drag/drop • Possible to capture directly from camera, import all standard audio/video file formats
  • 12. Thus Far… • Ability to record audio/video • Edit audio/video • Export as standard media: • avi • mpg • pic • wav • MP3
  • 13. Storage Issues • *.avi or *.mpg files are big • 20 minutes is > 1 Gb • Entire file must be downloaded onto viewer’s computer to watch • Multiple hours • Necessary to condense
  • 14. Videostreaming • Progressive downloads: • Video files must be downloaded somewhere on the viewer's computer in order to play • Streaming video: • Arrives to the viewer in "real time“ • Viewer doesn’t have to wait for it to download before being able to view it • Jump to different areas within video • Dynamically adjusts to Internet conditions
  • 15. Videostreaming Formats • Several options available More PC More Mac Based Based
  • 16. The Choice • I’m a PC Guy • Before I came on board: • First FERNE course was videostreamed using Real by University of Virginia via FERNE Board Member Stephen Huff • Subsequent FERNE courses videostreamed at University of Illinois at Chicago • Center for the Advancement of Distance Education (CADE) videostreaming lab
  • 17. Real • RealPlayer • New version = RealOne • Available for free: http://www.real.com • Link to download from FERNE webpages
  • 18. RealSystem Software • RealSystem Producer • Software that allows conversion of audio/video into RealMedia formats for streaming • RealSystem Server • Software that allows media streaming media to be hosted on server, live or on-demand
  • 19. Target Audience • Specify connections of anticipated target audience for best compression • Create multiple files for up to 8 different connection speeds • Encode (and link) to single file • RealSystem optimizes each viewer’s connection
  • 20. Example 1 Streaming of Audio and Video
  • 21. Thus Far… • Ability to record audio/video • Edit audio/video • Export as streaming media • Who wants to watch a video of someone talking for 20-30 minutes?
  • 22. Syncing Audio With Slides • RealPresenter Plus • Allows for narrating MS PowerPoint shows • Add-in to MS PowerPoint • Intended for use with microphone • We “trick” it using audio input from camera • Watch video for timing of when to change slide
  • 23. Features • Fast-forward • Pause • Allows viewers to jump to: • Desired slides • Desired time
  • 24. Example 2 Streaming of PowerPoint Slides with Audio
  • 25. FERNE Links • Web pages on a server in Jupiter, FL • http://www.FERNE.org • 100 Mb storage • Links to our local server for large files • PowerPoint shows • PDF files • Videostreamed content • http://ferne.er.uic.edu:8080/ramgen/
  • 26. Making Files Play Automatically • So RealPlayer automatically opens: • Insert /ramgen/ into link
  • 27. Questions? aschlich@uic.edu or ferne@ferne.org

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