Audio and VideoAudio and Video

David Zepeda

Information Architecture and Design I

Fall 2005

David Zepeda

Information Architecture and Design I

Fall 2005

• Vocabulary

• Audio Formats

• Video Formats

• Media Players

• Audio and Video on the Web

• Future of Audio and Video

• Vocabulary

• Audio Formats

• Video Formats

• Media Players

• Audio and Video on the Web

• Future of Audio and Video

VocabularyVocabulary

Codec: COmpresor/DECoder an encoding algorithm that compresses and

optimizes audio/video for digital transmission

Codec: COmpresor/DECoder an encoding algorithm that compresses and

optimizes audio/video for digital transmission

VocabularyVocabulary

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

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

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 StreamingReal-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.

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 StreamingReal-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.

Audio FormatsAudio Formats

File Type Extensions

AIFF (Mac) .aif, .aiff

WAV .wav

MP3 .mp3

Windows Media Audio .wma

QuickTime .qt

RealAudio .ra

ACC - Advanced Audio Coding

.MP4

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

Media Players

• Windows Media Player

• iTunes

• Quicktime

• Real Player

• Flash (.swf)

• DivX Player

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

Examples

http://www.thefray.net/

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

http://www.davidgarza.com/downloads.html

http://www.netflix.com/

http://www.amazon.com/

http://www.ischool.utexas.edu

http://www.idrivesafely.com/

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

Resources

• http://www.emmyonline.org/index.html• http://whatis.techtarget.com/fileFormatA/

0,289933,sid9,00.html• http://support.microsoft.com/?scid=kb;en-

us;q316992• http://www.apple.com/quicktime/player/

specs.html• http://www.uwm.edu/~elsmith/

videofileformats.html

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.