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  • Quicktime audio lectures Sample rate 8kHz Sample size 16 bit Qualcomm Purevoice 17 minute clip = 2.6 megs rate =2.6 kbytes per second ECON 105 .1 FPS 1.6 MB size rate = 1.3 K bytes/sec 20 min
  • Quicktime audio lectures Sample rate 8kHz Sample size 16 bit Qualcomm Purevoice 17 minute clip = 2.6 megs rate =2.6 kbytes per second ECON 105 .1 FPS 1.6 MB size rate = 1.3 K bytes/sec 20 min
  • Quicktime audio lectures Sample rate 8kHz Sample size 16 bit Qualcomm Purevoice 17 minute clip = 2.6 megs rate =2.6 kbytes per second ECON 105 .1 FPS 1.6 MB size rate = 1.3 K bytes/sec 20 min

Transcript

  • 1. Streaming Media At UMBC
  • 2. What is Streaming?
    • True streaming vs. Playback of downloaded files
    • A steady flow of data to the client
      • Buffered data
      • Bitrate of the stream must exceed the rate at which it is played out.
  • 3. Streaming Media in the Corporate World
    • 25% large companies currently using streaming
      • Advertising, branding, corporate communications and training
    • Use doubled in 18 month period 2000-2001 (eBiz Oct. 2001)
  • 4. The Bandwidth Bottleneck
    • Broadband vs Narrowband
      • Broadband in 10% of homes
    • Reduce bandwidth by
      • Reducing frame rate
      • Reducing resolution
      • Compression (codecs)
  • 5. Streaming Media Architectures
    • Real Networks
      • 25.9M
    • Windows Media
      • 21.5M
    • QuickTime
      • 7.3M
    Jupiter Media Metrix
  • 6. Codecs for the Web
    • Internet (Narrowband)
      • Real SureStream
      • Sorenson (Quicktime)
    • Intranet (Broadband)
      • MPEG 1, 2, 4
  • 7. Desktop Video
    • Acquire media
    • Capture (Digitize)
    • Edit and Compress
    • Deliver
      • Stream
      • DVD/CD-ROM
      • Tape
  • 8. Editing and Compression
    • Digital editing
      • Adobe Premiere
      • FinalCut Pro
      • iMovie
    • Compression
      • Cleaner
      • QuickTime, Real, WindowsMedia
  • 9. Delivering Content
    • On-demand and Live
    • HTTP Streaming
    • QuickTime Server
    • Real Server (Helix)
    • Windows Media
  • 10. Streaming at UMBC
    • Internet
      • Real
      • Quicktime
    • Intranet
      • IPTV
      • MPEG
  • 11. IP/TV Player
    • Available on the UMBC Internet CD
    • Mac TV
    • Content also available on UMBC Streaming Media site
  • 12. Streaming at UMBC Mapping the Patapsco UMBC Magazine Streaming Umbrella Group UMBC Music “ Listening Room” ResNET The Excellent Internet Adventure
  • 13. Streaming at UMBC FINWeb Tutorials Art History Lectures FlashCom Server
  • 14. Streaming at UMBC [email_address] Streaming Umbrella Group
  • 15. Future Directions
    • Uniform Serving?
      • Helix
      • Mpeg4
      • Simplified content creation
      • Broadband
        • Faster downloads decrease need for true streaming while increasing streaming audience
  • 16. Want to Know More?
  • 17. Contact
    • [email_address]
    • www.umbc.edu/iptv
    • www.umbc.edu/studio
  • 18. Accessibility
    • (6) Support Universal Accessibility to Streaming Media :
    • Effective design of streaming media content will need to consider and address the provision of
    • closed-captioning (for persons with hearing impairments), descriptive audio tracks (for persons
    • with blindness) and other Web accessibility components. In addition to aiding persons with
    • hearing impairments, closed captioning also has the potential to provide improved indexing and
    • searching of content
  • 19. Capturing Media
    • Capture Cards
    • FireWire (IEEE-1394)
    • Analog/Digital Converters