Multimedia Storage and Access Iris Xie

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  • 1. Multimedia Storage and Access Iris Xie
  • 2. Multimedia
    • Multimedia is any combination of:
    • music
    • animation
    • video
    • maps
    • text
    • illustrations
    • photos
    • narration
  • 3. Sound Formats
    • WAV - contains complete digital sound, files can be huge;
    • Need to download; high quality; window operating systems contain WAV players
    • MIDI - musical instrument digital interface
    • - contains instructions on how to play back synthesized sound
    • http://www.midi.org/
    • MP3 - is a file format which stores audio files on a computer in such a way that the file size is relatively small, but the song sounds near perfect; download faster
    • http://www.mp3.com/
    • Real audio –streaming file
    • http://www.lib.msu.edu/vincent/presidents/index.htm
  • 4. Building Music Digital Library
    • Acquire music collection
    • Optical music recognition (OMR)
    • Browse and search
      • Text-based query
      • Melody-based query
    • Display results
    • Example: New Zealand Digital Music Library
    • http://www.nzdl.org/musiclib
  • 5. Video files
    • AVI (Audio Video Interleave) is a format defined by Microsoft for storing audio/video data. It is very popular on the Windows platform.
    • .qt - QuickTime movie - QT player, offers smaller, downloadable files and allows films to be viewed on lower-end computer systems; 5 megabytes per minute; QuickTime 3 streaming file format
    • .mpeg (Motion Picture Experts Group) offers high resolution and better quality than the equivalent QuickTime versions, and requires high-end computers to view; nine megabytes per minutes
    • .rm - RealMedia files (more compact), eliminate the need to download the file
    • .wmv - The .wmv file name extension is used for Windows Media Video (WMV) files that contain both audio and video compressed with the Windows Media Audio and Video codecs.
  • 6. Streaming Audio & Video
    • Internet compatible
    • allows file to be played without first downloading
    • the complete file
    • RealPlayer software leading the way
    • http://www.real.com
  • 7. Video Processing
    • Camera ->
    • Video Capture/conversion ->
    • RealProducer Plus
    • http://www.realnetworks.com/products/producerplus/info.html?src=000927realhome_1&mcc=000927realhome_1
    • Video editing ->
    • Output
  • 8. Video Editing
    • Timeline Editors
    • - treat components in a linear fashion as parallel tracks
    • Storyboard Editors
    • - treat video components as objects
    • Examples of Video Editing software
    • Adobe Premiere
    • http://www.adobe.com/products/premiere/
    • MGI VideoWave
    • http://www.mgisoft.com/video/videowave/
    • Windows Movie Maker
    • http://www.atomiclearning.com/moviemaker2
  • 9. Video Output
    • Tape
    • CD (650MB)
    • DVD (digital video disk, digital versatile disk)
    • 4.7 GB (single-layer, single side)
    • 8.56 GB (dual-layer, single side)
    • Streaming Video (Internet)
  • 10. Example of using different formats
    • American Memory Viewer Information
    • http://memory.loc.gov/ammem/amviewer.html