Quoting Joanna Plumbe Photography: > I've been told by a contact at Calumet that Kodak has just released some > research that showed that the failure rates of DVD's over time is likely to > be related (in part) to the speed with which they were burned. Apparently > they are recommending 1x speed as the only safe speed to burn at for long > term storage. Is this true? Martin, any input?
Joanna: That makes sense to me. The same data has been out for CDR for a few years. Faster burning speeds lead to higher BLER (Block Error Rates) scores which translates to sectors of the disc being marked as "unreadable" in the TOC. If you have lots of errors, you can actually exceed the storage capacity of the disc and then you have real problems with CDR as the TOC is written last. If you try to "squeeze" too much data on the disc and run out of room for the TOC, then the disc becomes a coaster. Reducing burn speeds lowers BLER scores and should result in a more stable disc over time. However, whether or not this translates to DVD-R, I'm not certain. Hope that helps. David -- Creating an image database? visit (http://ControlledVocabulary.com/) and join the discussion list, or read areview of the Image Info Toolkit utility at: (http://ControlledVocabulary.com/imagedatabases/imageinfotoolkit.html) David Riecks http://www.riecks.com - http://zillionbucks.com =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
