Jpeg who will own you in 100 years!

To begin with, the hardware and storage media — magnetic tapes, disks, whatever — on which a film is encoded are much less enduring than good old film. If not operated occasionally, a hard drive will freeze up in as little as two years. Similarly, DVDs tend to degrade: according to the report, only half of a collection of disks can be expected to last for 15 years, not a reassuring prospect to those who think about centuries. Digital audiotape, it was discovered, tends to hit a “brick wall” when it degrades. While conventional tape becomes scratchy, the digital variety becomes unreadable.

DIFFICULTIES of that sort are compounded by constant change in technology. As one generation of digital magic replaces the next, archived materials must be repeatedly “migrated” to the new format, or risk becoming unreadable. Thus, NASA scientists found in 1999 that they were unable to read digital data saved from a Viking space probe in 1975; the format had long been obsolete.



http://www.nytimes.com/2007/12/23/business/media/23steal.html?_r=3&pagewanted=1&ref=technology&oref=slogin