Video

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 quicklyApplications 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
• Lots 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.