Re: [AV Media Matters] AV preservation

[jhartke@mscience.com]

Attempting to predict 20 year or more longevity is a fruitless exercise
for three reasons:

1. Longevity is highly dependent upon initial recording quality, less
upon generic media classifications.

2. Significant quality variations occur not only between brand names but
also within them.

3. Handling and storage methods play an important role that is often
neglected or minimized.

Confidence in media longevity can only be achieved through initial
testing followed by periodic (a few years) verification. If degradation
is observed, then information transfer can take place while the media is
still readable.

There is no magic bullet. Proper procedures are the key, not debate over
what constitutes ideal media.

Jerry
Media Sciences, Inc.

Jim Wheeler wrote:
> 
> Robert
> 
> I am a member of the ISO TC42 imaging standards committee.  The
subject
> of
> "Life Expectancy" comes up often.  In my opinion, there is no way that
> we can
> attach an LE to a particular archival medium because there are too
many
> variables.
> 
> Film has a very long LE if frozen but how do you read the audio tracks
> in 100
> years if you cannot find a THX or Dolby reader?
> 
> Jim Wheeler

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