HELP! * GREY=local LOCAL HTML version of Foils prepared December 2,95

Foil 3 Digital Video: The Basics

From Video Server,Delivery and Compression Technologies SC95 Tutorial on Web Technologies -- December 4,95. by NPAC Team * See also color IMAGE

Analog video:
  • Each frame represented by an analog wave form.
  • Composite signal carries all video components: color, brightness, sync..
  • Component video separates video components (S-VHS, RGB...), component signals still analog
  • Main weakness: generational quality loss
Digital video formats
  • D1, D2, D3, D5, Digital Betacam....
  • All these formats still use magnetic tape as the storage medium
  • Very little compression is used for these digital video formats
  • Main weakness: only sequential access ("linear editing")



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