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Old 11-14-2020, 07:23 PM   #21
HorrorBlu HorrorBlu is offline
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There's a thread on here where people report when their discs have gone bad. For the most part, most of the blu-ray issues are isolated to LionsGate and Fox releases circa 2006-2012. As for DVDs, Warner's dual-layered discs are the most likely to go bad over time.

Of course, there are always exceptions, but outside of these companies, most seem pretty reliable.
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Old 11-14-2020, 08:45 PM   #22
alchav21 alchav21 is online now
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Do any of you guys know how many Disc Factories are left? I don't think each Studio has their own. I heard in North America there were two left. Of course each Studio has to make their own Digital Master for a particular Disc.
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Old 11-15-2020, 02:58 AM   #23
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I'm not worried. I've got CDs that are 35+ years old that still play fine. Take care of them and they will last.
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Old 11-15-2020, 04:37 PM   #24
Anthony P Anthony P is offline
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Quote:
Originally Posted by alchav21 View Post
Do any of you guys know how many Disc Factories are left? I don't think each Studio has their own. I heard in North America there were two left. Of course each Studio has to make their own Digital Master for a particular Disc.
Studios never had their own factories.
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Old 11-15-2020, 11:47 PM   #25
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I've got some Disco Vision discs from 1978 that still play, a little disc rot sparkling but can still view them. That's about 42 years.

The worst I've seen are WB HD DVD's. I've got a stack of those I need to recycle that went bad. Some went bad early. Some went bad between 2017 and 2020.
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Old 11-16-2020, 12:03 AM   #26
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I should hope to last as long as my discs will.
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Old 11-18-2020, 12:34 AM   #27
chriscreep23 chriscreep23 is offline
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Here's is an interesting article. What do you guys think of it?

https://itsastampede.com/2020/03/30/...-do-dvds-last/
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Old 11-25-2020, 02:08 AM   #28
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As of now, I haven't seen any article or evidence of mass BD deterioration or a mass disc rot involving BD.

Does anybody know when Sony (and to greater extent, Blu-ray Disc Association) planned and developed blu-ray before it became a mainstream format standard, did they ever had plans for preventing/combatting disc rot and deterioration? I want to know because if blu-ray disc come with measure to combat disc rot and deterioration, then that disc standard is way better CDs and DVDs when it comes to disc rot and deterioration.
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Old 12-16-2020, 12:38 AM   #29
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Quote:
Originally Posted by chriscreep23 View Post
Here's is an interesting article. What do you guys think of it?

https://itsastampede.com/2020/03/30/...-do-dvds-last/
I think you need to chill out

Since this I’ve read many other studies online which I paid for, I have had emails with data archivists and spoken with others i the know (who worked for Panasonic) and there is no evidence of any wide spread disc rot, aside from known production issues that have caused bad batches.

There are also no realistically circumstances to put discs through any form of stress test like real world tests.

Replicated media is designed to last up to 100 years + was the basic concluding
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Old 12-17-2020, 04:13 AM   #30
mdo7 mdo7 is offline
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Quote:
Originally Posted by johndoyle123 View Post
I think you need to chill out

Since this Iíve read many other studies online which I paid for, I have had emails with data archivists and spoken with others i the know (who worked for Panasonic) and there is no evidence of any wide spread disc rot, aside from known production issues that have caused bad batches.

There are also no realistically circumstances to put discs through any form of stress test like real world tests.

Replicated media is designed to last up to 100 years + was the basic concluding
Well there's another reason blu-ray won't really rot. DVD use aluminum reflective layer, right. Aluminum rust and decompose over time, am I correct?

Blu-ray doesn't use aluminum, they used silver alloy over aluminum. So using silver over aluminum for blu-ray is probably the reason why disc rot isn't common on blu-ray.
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Old 12-17-2020, 01:55 PM   #31
ThanatosPT ThanatosPT is offline
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Quote:
Originally Posted by mdo7 View Post
Well there's another reason blu-ray won't really rot. DVD use aluminum reflective layer, right. Aluminum rust and decompose over time, am I correct?

Blu-ray doesn't use aluminum, they used silver alloy over aluminum. So using silver over aluminum for blu-ray is probably the reason why disc rot isn't common on blu-ray.
But silver oxidizes too.
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Old 12-17-2020, 03:49 PM   #32
chriscreep23 chriscreep23 is offline
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Quote:
Originally Posted by johndoyle123 View Post
I think you need to chill out

Since this I’ve read many other studies online which I paid for, I have had emails with data archivists and spoken with others i the know (who worked for Panasonic) and there is no evidence of any wide spread disc rot, aside from known production issues that have caused bad batches.

There are also no realistically circumstances to put discs through any form of stress test like real world tests.

Replicated media is designed to last up to 100 years + was the basic concluding
That guy however did not put his DVDs under extreme environmental conditions but they degraded nonetheless
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Old 12-17-2020, 05:04 PM   #33
mdo7 mdo7 is offline
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Quote:
Originally Posted by ThanatosPT View Post
But silver oxidizes too.
I did some research and yeah you're correct. But it looks like it doesn't cause a serious problem for BD (then again, some stories of disc rot or BD not playing back on players varies differently). So I can't jump to any conclusion for now. Need more research and evidence to make a good conclusion about BD disc rot.
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