"Cloudy" DVD

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The Prime Necromancer
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"Cloudy" DVD

Post by The Prime Necromancer »

I just bought a copy of "In the Mouth of Madness", and the back of the DVD is a bit irregular. Basically, a part of the back appears somewhat discolored or cloudy compared to the rest, with a curved, seemingly randomly placed yet very clear definition between the two parts. I have actually seen this a few times before in other DVDs I've purchased; all of those times I tested the DVD and could find nothing wrong with it. I'm testing this one right now too, and so far, it also is working perfectly.

I was wondering if anyone else has encountered this before, knows what causes it, and whether or not it is something to be worried about.
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Netko
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Post by Netko »

Probably the outer protective layer not bonding properly to the data layer. You can get the same effect by taking a CD and twisting it from the edges towards the center with the data side on the side getting elongated. So its probably a defect, but as long as it works...
The Prime Necromancer
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Post by The Prime Necromancer »

Well, it works now, but what I'm worried about is it failing after half-a-dozen plays or something.

I'm trying to do a little google "research", but opinion seem to be mixed. Some places I've looked claim it's a cosmetic problem due to irregular cooling during the molding process, and it rarely affects playback. Others seems to link it to "DVD rot".

Anyway, thanks for the reply. If there's anybody else with information, particularly that of a more up-to-date nature (most of the information I've found online seems to be several years old), I'd appreciate hearing it.
Is it a crime to try and learn the truth? Is it a sin to search for those things which you fear? My purpose in this world is knowledge, and the dissemination of it. And it is I who is to restore the fruits of my labors to the entire world. Wake up! Don’t be afraid of knowledge! Humans who loose the capacity to think become creatures whose existence has no value. Think, you humans who are split into two worlds! Unless you want the gulf between humans to expand into oblivion, YOU MUST THINK! - Schwarzwald
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The_Saint
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Post by The_Saint »

Can get a similar effect by leaving a cd/dvd out in the sun for while.

I've heard somewhere that leaving them "too long" in the sun or generally heating them up beyond some indeterminate point will cause data corruption but I don't know how valid this is. I have a number of cd's that have become cloudy (probably due to heat) and all of them play fine.
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