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Digitization Guidelines 

This guide will offer guidance to faculty who wish to donate digital materials for inclusion in the Library's digital collections.
Last update: May 06th, 2009 URL: http://guides.lib.virginia.edu/content.php?pid=40437  Print Guide  RSS Updates

Video Standards            Print Page
  
 

Video Standards

Format

Standard

Videotape
  • preservation master: Digital Betacam
  • preservation access master: MPEG4 files (and/or .mov files) on DVD and portable hard drive at two resolutions
    • 800 Kbps, 512x384, 30 FPS, H.264 @ 700kb, AAC @ 96kbit Stereo, QuickTime playable
    • 300 Kbps, 400x300, 30 FPS, H.264 @ 256kb, AAC @ 40kbit Mono, QuickTime playable
Film
  • preservation master: Digital Betacam
  • preservation access master: MPEG4 files (and/or .mov files) on DVD and portable hard drive at two resolutions
    • 800 Kbps, 512x384, H.264 @ 700kb, AAC @ 96kbit Stereo, QuickTime playable
    • 300 Kbps, 400x300, H.264 @ 256kb, AAC @ 40kbit Mono, QuickTime playable
  • AND/OR On2VP6‐encoded Flash video files at two resolutions
    • 800 Kbps, 640x480, 128 Kbps 44.1kHz MP3 audio
    • 300 Kbps, 320x240, 64Kbps 44.1kHz MP3 audio
  • AND/OR QuickTime DV files at 25mbps, 720x480 resolution, 44.1kHz PCM audio

 

The specifications are based on standards developed by the International Association of Sound and Audiovisual Archives, The British Library, the University of Maryland Library, the Sound Directions project by Indiana University and Harvard University, the National Film Preservation Foundation, and the University of Virginia's Digital Media Lab. Specifications for preservation access masters are also based on anticipated delivery format, such as streaming Flash or QuickTime video.

Items are selected for audiovisual reformatting according to format, condition, and uniqueness, as well as patron request and playback machine obsolescence. At present, priority is given to audiovisual materials with inaccessible formats, poor condition, and one‐of‐a‐kind or rare status.

Preservation‐level reformatting standards for audiovisual material on optical media or in the form of digital files have not yet been determined.

Preservation Services is investigating the use of uncompressed files on data tape, such as LTO‐3/4, and Motion JPEG 2000 files as new standards for moving image preservation masters.

N.B. The standards and specifications mentioned above are not written in stone; in fact they are in flux as different options for audiovisual preservation emerge. Preservation Services welcomes all ideas and suggestions pertaining to reformatting audiovisual materials.

 
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