1. David Zepeda Information Architecture and Design I Fall 2005
Audio and Video
David Zepeda
Information Architecture and Design I
Fall 2005

2. Vocabulary
Audio Formats
Video Formats
Media Players
Audio and Video on the Web
Future of Audio and Video

3. Vocabulary
Codec: COmpresor/DECoder an encoding algorithm that compresses and optimizes audio/video for digital transmission

4. Vocabulary
Lossless Compression: type of compression that squeezes/stuffs data into smaller sized data packets without permanently discarding information
Lossy compression: type of compression that intelligently discards data to achieve smaller file sizes, permanently discarding frequencies deemed unnecessary

5. Vocabulary
Streaming Media: Media that is consumed while it is being delivered.
HTTP Streaming / Progressive Streaming: Download-and-Play method takes a compressed media file and downloads it to your computer's hard drive before playback.
Real Time Streaming Real-time streaming is broadcast to your computer directly from a server and played back as the information is received from the server, without waiting for the file to download.

6. Audio Formats File Type Extensions AIFF (Mac) .aif, .aiff WAV .wav MP3
Windows Media Audio
.wma
QuickTime
.qt
RealAudio
.ra
ACC - Advanced Audio Coding
.MP4

7. Video Formats File Type Extensions Moving Picture Experts Group (MPEG)
.mpg, .mpeg
Quicktime
.mov, .qt, .movie, .moov
Audio Video Interleaved
.avi
Windows Media Video
.wmv
RealMedia
.ram, .rm
DivX
.divx

8. Media Players Windows Media Player iTunes Quicktime Real Player
Flash (.swf)
DivX Player

9. Audio and Video for the Web
Don’t use it if you don’t need it
Only use it when expected
If you use it, explain how
Offer alternative formats if possible
Use Audio and Video to instruct and entertain

10. Examples http://www.thefray.net/ http://www.thefray.net/header.swf

11. Future of Audio and Video
Take it anywhere: iPod, Podcasting, PSP, Cell Phones, and PDAs
Emmy for ACHIEVEMENT IN CONTENT FOR NON-TRADITIONAL DELIVERY PLATFORMS This award will be given in recognition of editorial content and video production creativity in original material created primarily for consumption on non-traditional viewing platforms such as computers, mobile phones, PDAs and similar devices

12. Resources http://www.emmyonline.org/index.html

13. Resources
Barfield, Lon. (2004). Design for new media : interaction design for multimedia and the Web. Harlow, England ; New York : Pearson/Addison Wesley, 2004.
Beggs, J. and Thede D. (2001). Designing Web Audio. Beijing ; (Cambridge, Mass.) : O'Reilly, c2001.