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  • 1. Video Norman White Stern School of Business
  • 2. Video Formats
    • AVI
      • Windows video format
        • Supports variety of CODECs
          • CODEC – Compression-Decompression
    • Quicktime (MOV)
      • Apple supported format
    • MPEG – Motion Pictures Experts Group
      • Hard to manipulate, high quality
  • 3. Streaming Formats
    • Real Media – RM
    • Microsoft – Advanced Streaming Format (ASF)
  • 4. Video Tips
    • Very important to capture video with the highest quality you can
    • Consumer Camcorders lose quality quickly as light level drops
    • Remember, audio quality is just as important, consumer cam corders have poor microphones
  • 5. Digital Cam Corders
    • The new digital Prosumer cameras have much higher quality, but still some problems
    • Recording time limits
      • Usually 1 hour for consumer cameras, OK for some applications, but unacceptable if there is no break to change media
    • Blair Witch Project – First major movie to be shot with Digital Camera
  • 6. Cost Dropping quickly Applications expand
    • Until recently, needed a > $10K Sony beta max for decent video
    • Now $2,000 digital cameras give comparable quality (and MUCH smaller and lighter)
    • Inexpensive disk drives now offer capacity to deal with “raw” video (100MB per minute, 6 gigabytes for an hour)
    • Need fast processors to encode, decode, transfer data
  • 7. More hardware advances
    • IEEE 1394 – “Firewire” standard
      • Allows direct connection of digital devices without a separate card
    • USB – Universal Serial Bus
      • Offers 12Mbit transfer
        • Next version will be 100 Mbit
  • 8. Networking Advances
    • 100 Mbit ethernet – Allows streaming of MPEG Video
    • “ Switched” Ethernet – allows a separate stream to each individual PC without collisions
    • Multicasting router capabilities allow listeners to share a stream
    • Cable Modems, ADSL, Satellite Dishes much higher bandwidth to home, small business
    • TCP/IP v6 – Quality of Service support
    • Internet 2- 600Mbit connections
    • Gigabit switches to handle traffic
  • 9. Software Advances
    • Rapidly improving streaming and compression techniques to take advantage of more processing power, new computer capabilities (special instructions for A/D)
    • Inexpensive, powerful video manipulation software
  • 10. Demand Explosion
    • E-Commerce and B2B now can use on-line video training, sales clips etc.
    • Person to Person IP Video Conferencing
    • On-line TV? Movies? Not yet…
  • 11. Editing Video
    • Adobe Premiere
      • Powerful Mac and PC based editor
    • Supports “non-linear” editing
      • Used to have to edit by splicing tape (linear)
        • Copy tape from one machine to another as you edit
      • Now can hold digital video content on disk and edit frame by frame
    • AVID – Commercial quality edit system
  • 12. Premiere Functionality
    • Cut / Splice Video clips
    • Dissolve between clips
    • Multiple audio tracks
    • Supports many CODECS
    • Background colors
    • Titles
    • Filters (blur, pan, zoom,sharpen distort etc.)
  • 13. Premiere Basics
    • Video clips are shot
    • Clips are brought into Premiere
    • Clips are dropped on one of the video tracks in constructor window
    • Audio clips added, sound adjusted
    • Titles, transitions, filters added
    • “ Make Movie” produces a new video clip in AVI , QT, Real Media etc format.
    • AVI format can be edited again
  • 14. Conclusion
    • Video is now capable of being edited on consumer class computers
    • Need LOTS of disk space
      • 100MBS / minute of video
      • Need 3 times as much space
      • Hard drive defragmented
      • Lot’s of memory
      • Fast processor (200MB pentium minimum)
      • Digital capture card, Firewire or USB to bring video in
  • 15. Conclusion
    • All indications are that Streaming Media applications will continue to have rapid growth
    • Recent Dot-com problems have shut down some of the early entrants in the consumer market.