NDSA:Standards and Best Practices Working Group/Optical MeetingNotes/Morel

• Morgan Morel (George Blood Audio & Video) @av_morgan
  • 500 once written DVDs - American Folklife Collection Veterans History Project.
  • Staff at vendor asked to create findings report; outlining troubles and tools used.
  • Formats for medium term storage white paper; ISO disc image recommended.
  • ISO disc image can be mounted filesystem as if it were inserted into drive
  • Extract production master files
  • VideoTS folder and AudioTS folder
    • [Going through folders as they appear:] VideoTS is all video content - IFO is info about playback and navigation
    • VOB - audio and video data _0 menus - limit to 1GB content - need to connect to make more than one to make it playable
    • All folders listed needed to be intact
  • CLI: *ended up using most for project on-site at George Blood.
    • hdiutil*
    • dd
    • ddrescue*
  • GUI:
    • Mediagrabber
    • DVD Decrypter
    • Used hdutil and ddrescure - powerful for automated systems run from server
    • make workable iso images in case of damage etc
  • Tools for extraction: *ended up using most for project on-site at George Blood.
    • GUI: compressor, handbrake, mpegstreamclip, streamz
    • CLI: FFmpeg*
  • Out of 500 DVDs, 49 were problematic
  • 9 had physical issues - ok after polishing
  • Cloning errors for rest - ddresue could still make working ISO images
  • 31 were DVD-ROM instead of DVD-video.
  • http://www.digitizationguidelines.gov/audio-visual/documents/IntrmMastVidFormatRecs_20111001.pdf