Media

1
Media

• Library 180
• Gayle Shonkwiler
• April 2003

2
What is Media?

• Television
• Newspapers
• CDs
• Floppy Disks
• DVD
• Records 8 tracks
• Video
• Internet
• Magnetic Tape cassettes, reels, cartridges
• Optical CD-Rom (reads only memory)and CD-R
  (record able) DVD_ROM Digital Versatile Disc Read
  Only Memory.

3
Media Life

• D3 magnetic tape stored properly 50 years
• DLT magnetic tape cartridge 75 years
• CD/DVD 75 years
• CD-ROM - 30 years

4
As defined by Merriam-Webster

• Main Entry 2mediaFunction nounInflected
  Form(s) plural mediasUsage often
  attributiveEtymology plural of mediumDate
  19231 a medium of cultivation, conveyance, or
  expression especially MEDIUM 2b2 a singular
  or plural in construction MASS MEDIA b plural
  members of the mass mediausage The singular
  media and its plural medias seem to have
  originated in the field of advertising over 50
  years ago they are apparently still so used
  without stigma in that specialized field. In most
  other applications media is used as a plural of
  medium. The great popularity of the word in
  references to the agencies of mass communication
  is leading to the formation of a mass noun,
  construed as a singular You know, the news media gets on to something --
  Edwin Meese 3d the party's policies -- James Lewis, Guardian
  Weekly. This use is not as well established as
  the mass-noun use of data and is likely to incur
  criticism especially in writing.

5
From Thesaurus

• Synonyms MEAN 2, agency, agent, channel,
  instrument, instrumentality, instrumentation,
  ministry, organ, vehicle

6
PDF

• Portable Document Format
• (Adobe-Acrobat
• Use for files with large numbers of pages
• Requires complex formulas or requiring complex
  formatting
• Use for downloads and viewing off line

7
VRML

• Virtual Reality Markup Language
• For 3D Data visualization
• Based on Silicons Graphics Open Inventor format
  with several conversion programs

8
HTML

• Hyper Text Markup Language
• For web page design

9
Java Applets

• To add Simple animations visual impact

10
JPEG or JPG

• Joint Photographic Experts Group
• Compression scheme works by looking for redundant
  information in files and eliminating it
• Makes small files
• Each time you save a JPEG file you lose some data
• ISO/IEC JPEG with JFIF

11
Bitmap graphics

• GIF and PNG

12
GIF

• Graphic Interchange Format
• Saves space by restricting to 256 colors or fewer
  (JPEG allows millions)
• The dots you see if looking closely is due to
  dithering
• This shifts the dots around from colors they have
  to create or fake the colors they dont have.
• Developed by CompuServe
• Sometimes called CompuServe or CompuServe Gif

13
MPEG

• Moving Picture Experts Group
• Video compression and file formats
• Different types
• MPEG-1 basis of VCDs
• MPEG-2 basis of DVDs
• MPEG-4 basis of the latest DivX codec
• Audio
• MPS Files can be converted to Ots Album files.
  They store more information. It is similar to a
  CD.

14
QuickTime

• Movie format
• Has choice of codecs for video streams

15
Media format file extensions for Media Player

• CD Audio Track -.cda
• Intel Video Technology - .ivf
• Macintosh AIFF Resource - .aif, aifc, .aiff
• Windows Media - .asf, .asx,.wax, .wma, wmv,
  .wvx, .wmp, .wmx
• Windows formats - .avi, .wav
• Windows Media Player skins - .wmz, .wms
• Moving Picture Experts Group (MPEG) - .mpeg,
  .mpg, .m1v, .mp2, .mp3, .mpa, .mpe, .mpv2, .m3u
• Musical Instrument Digital Interface (MIDI) -
  .mid, .midi, .rmi
• UNIX - .au, .snd

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JMF and RTP

• AIFF .aiff
• AVI .avi
• GSM .gsm
• .mvr (hot media)
• MPEG .mp2 and .mp3
• Quick Time .mov
• Sun Audio .au
• Wave .wav

17
Midi (SP-MIDI)

• Scalable Polyphony (SVG) synthetic audio
• 2D vector graphics

18
Glossary

• Go to
• www.e-training.iatp.md/seminars/digitalmedia/2.htm
  l
• For a good glossary of computer terms to help
  understand computer media.

19
Bibliography

• www.m-w.com/
• http//dpconline.org/graphics/medfor/formats/html
• http//support.microsoft.com/default.aspx?scid/su
  pport/mediaplayer/wmp7help/htm/player_overview_hum
  i.asp
• www.e-training.iatp.md/seminars/digitalmedia/2.htm
  l
• www.esc.auckland.ac.nz.Docs/digital-media-formats.
  html
• www.umtsworld.com/technology/mediaformats.htm
• http//java.sun/com/products/java-media/jmf/21.1/f
  ormats.html
• www.techtv.com/callforhelp/stepone/story/0,24330,3
  398899,00.html