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DVD shelf life
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jackdjr
Newbie
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8. December 2007 @ 10:37 |
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I have been copying movies for several years with no problems. I have noticed that the movies I copied 3 years ago will no longer play without freezing up. These movies were copied using Memorex media which I have learned since then that they are not very reliable. They played fine when they were originally copied. Is this a failure of poor quality disks or a shelf life problem that affects all disks. What is the expected shelf life of good quality disks such as Sony, TDK etc
Thanks,
Jack
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AfterDawn Addict
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8. December 2007 @ 11:23 |
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It is a "failure of poor quality disks". TDK and some Sonys are not much better. Try Tys or Verbs for reliability. Good quality discs should last as long as the present DVD format.
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jackdjr
Newbie
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8. December 2007 @ 13:15 |
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Thanks I appreciate the fast response.
Jack
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AfterDawn Addict
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9. December 2007 @ 02:11 |
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Quote:
Is this a failure of poor quality disks or a shelf life problem ?
BOTH, its a term called "Dye Rot" that causes the problem
Quote:
What is the expected shelf life of good quality disks such as Sony, TDK etc
TDK will code out as cmc mag same as memorex so avoid that brand also. as said use either Taiyo Yuden or Verbatims and all will be good. they say TY media will last 100 years
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JoeRyan
Senior Member
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10. December 2007 @ 13:59 |
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There is no such thing as "dye rot." The problem is a poor quality recording in the first place which can be due either to poor compatibility of the disc with the recording drive, poor quality discs, or both. If you checked the discs right after recording, you probably would have found high errors and/or high jitter indicating a poor recording. It would have been difficult to determine the exact cause unless one knew whether or not your drive and firmware version supported the MID code or not. Many members of this site dislike and denigrate Memorex and TDK because they use CMC as a supplier (as does Verbatim, by the way). Other sites have members who consider CMC as one of the best manufacturers and recommend both Memorex and TDK.
As for Taiyo Yuden, they have issued a certificate stating that their DVD discs may last 50 years. Environmental tests indicate that well recorded DVD+R discs will last 39 years with 95% assurance and half of the discs in the test lasted 52 years. I doubt any DVD disc will make it 100 years because the dyes are azo cyanine and cyanine dyes.
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dilligaf9
Member
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10. December 2007 @ 14:16 |
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Since this topic is about Shelf life, what span of time do we have to keep stockpiled unused DVDs and get good burns on the DVD media. Months? years?
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Moderator
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10. December 2007 @ 15:30 |
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i'm using my 2yr old stocks of unopened 'Verbatim Taiyo Yuden', the elusive TYG02 that i bulk-bought back when they appeared here in the UK for a short time. They spent a good year sat on the floor of my boat on the freezing river ie about 1foot under the water line and are holding up just fine
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JoeRyan
Senior Member
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10. December 2007 @ 18:01 |
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The generally accepted rule is 7 years, but I have tested discs that are 8 years old with good results.
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AfterDawn Addict
1 product review
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10. December 2007 @ 18:26 |
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Originally posted by JoeRyan:
There is no such thing as "dye rot." The problem is a poor quality recording in the first place which can be due either to poor compatibility of the disc with the recording drive, poor quality discs, or both. If you checked the discs right after recording, you probably would have found high errors and/or high jitter indicating a poor recording. It would have been difficult to determine the exact cause unless one knew whether or not your drive and firmware version supported the MID code or not. Many members of this site dislike and denigrate Memorex and TDK because they use CMC as a supplier (as does Verbatim, by the way). Other sites have members who consider CMC as one of the best manufacturers and recommend both Memorex and TDK.
As for Taiyo Yuden, they have issued a certificate stating that their DVD discs may last 50 years. Environmental tests indicate that well recorded DVD+R discs will last 39 years with 95% assurance and half of the discs in the test lasted 52 years. I doubt any DVD disc will make it 100 years because the dyes are azo cyanine and cyanine dyes.
IMHO, JoeRyan is THE authority on disc knowledge here at AD. When JR speaks on discs, I listen and take that info as gospel.
"The flimsier the product,the higher the price"
Ferengi 82nd rule of aqusition
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dilligaf9
Member
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10. December 2007 @ 18:59 |
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Joe are there date codes on DVDs? Is there a way us common people can tell the date, month/year the discs were made? So we can rotate old stock.
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paulakiwi
Suspended due to non-functional email address
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10. December 2007 @ 19:14 |
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Hiya, That is great to know about dvds that aren't that good afer 3 years...I have also wondered what happened years later after copying dvds & what is a good brand to buy as well...
P.Jones
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JoeRyan
Senior Member
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11. December 2007 @ 10:20 |
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Yes, there are date codes in the ink-jet or laser-etched production codes on each disc. These are intentionally not easy to interpret, and each factory does it differently. For example, one factory has the numbers signifying, from left to right: coater number, factory building, disc format, production line, year, month, day, shift, serial number, and dye type. Another factory expresses the date in the Julian format. And they all change their codes regularly. These numbers are intended for technical assessors to determine the exact production moment and place for a disc in order to track defects if they occur.
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AfterDawn Addict
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12. December 2007 @ 03:53 |
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thats why i don't keep a large stock, I just order 200 at a time .every now a then i do the 600 TY but not often
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bratcher
Senior Member
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13. December 2007 @ 21:16 |
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Originally posted by ZoSoIV:
thats why i don't keep a large stock, I just order 200 at a time .every now a then i do the 600 TY but not often
Yes I order 200 discs at a time also & that seems to last me about 2 months before I have to order more. Haven't tried a 500 or 600 disc order yet. Perhaps I should one day!!
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Allegro1
Member
1 product review
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17. December 2007 @ 10:48 |
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Originally posted by bratcher:
Yes I order 200 discs at a time also & that seems to last me about 2 months before I have to order more.
200 in two months??!!!
Do you have time to watch all those movies or are you backing up 1200 dpi bitmap scans of the library of congress? <g>
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bratcher
Senior Member
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18. December 2007 @ 00:39 |
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Originally posted by Allegro1:
Originally posted by bratcher:
Yes I order 200 discs at a time also & that seems to last me about 2 months before I have to order more.
200 in two months??!!!
Do you have time to watch all those movies or are you backing up 1200 dpi bitmap scans of the library of congress? <g>
Some were for the DVD recorder hooked up to the cable DVR. Lots of movies I haven't watched yet. I've stopped recording movies on the DVR for awhile. All I record now is a few TV shows I like to watch.
Others were files saved from the computer of classic movies & TV shows from usenet binaries groups. Movies that are either out of print or not available to buy on video. I've got about 600 discs of those files so I stopped getting them from the newsgroups. A 2nd computer is kept busy with convertx2dvd turning those movies & TV shows into DVD's for my DVD player. Lots to watch!!
I'll still buy 200 or so discs at a time though as I need them for the DVD video conversions & to record a few TV shows I want to keep from the cable DVR.
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RIOT08
Newbie
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18. December 2007 @ 20:29 |
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Where do you guys buy your 200 DVD's at? Do they have better prices when you buy bulk?
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AfterDawn Addict
1 product review
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18. December 2007 @ 21:06 |
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Meritline.com and supermediastore.com and yes to better prices on good media
"The flimsier the product,the higher the price"
Ferengi 82nd rule of aqusition
This message has been edited since posting. Last time this message was edited on 18. December 2007 @ 21:07
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bratcher
Senior Member
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19. December 2007 @ 12:34 |
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Originally posted by RIOT08:
Where do you guys buy your 200 DVD's at? Do they have better prices when you buy bulk?
I buy mine from Meritline. A good place for both Verbatim & Tayio Yuden media. Sometimes you can get free shipping. Keep an eye on the media sales therads in this forum. Often Verbatim (in the stores( goes on sale & so do other brands like Maxell.
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AfterDawn Addict
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19. December 2007 @ 13:42 |
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Meritline had a sale on the Taiyo Yuden 200 for 44.95 shipped so check it out
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This message has been edited since posting. Last time this message was edited on 19. December 2007 @ 13:44
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AfterDawn Addict
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19. December 2007 @ 13:42 |
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I think that most of us would believe that quality DVD discs will out live the current DVD technology, therefore use the high quality media of your choice and minimize induced errors throughout your individualized burning processes.
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bratcher
Senior Member
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20. December 2007 @ 10:24 |
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Originally posted by ZoSoIV:
Meritline had a sale on the Taiyo Yuden 200 for 44.95 shipped so check it out
Which TY media was it? Silver thermal? Silver inkjet? White inkjet hub printable or valueline?
I'm burning the last 175 (or so) Verbatim 4x white inkjet printables that I have on hand. Was burning this media because it was cheaper than the inkjet printable 8x media plus it prints great. Bought a lot of it over the last year or so however there is no more to be found at SMS, Meritline or anywhere else that I can find. No loss though. I'll just get the Verb 8x white inkjet printable, the 8x TY silver inkjet printable or the 8x TY white inkjet hub printable whichever is cheapest at the moment. Yeah I could buy 16x media & my Plextor 716-A burns it at full speed however I don't mind using the slower media while it's still available....
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AfterDawn Addict
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20. December 2007 @ 12:46 |
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it was the vauleline DVD-R 200 pack, hopefully they still on sale
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This message has been edited since posting. Last time this message was edited on 20. December 2007 @ 12:48
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bratcher
Senior Member
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20. December 2007 @ 15:52 |
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Originally posted by ZoSoIV:
it was the vauleline DVD-R 200 pack, hopefully they still on sale
If you mean the 200 pack 8x Valuelone then yes it's still on sale.
$44.99 save $12. Not sure how long it will last though. One thing I wonder. If your getting 16x discs in this package then what top speed could you get with your recorder set at 16x speed? Somewhere between 10 & perhaps 14x? Or do most people using these discs set the speed at 8x just to be safe & get a good burn?
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AfterDawn Addict
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21. December 2007 @ 03:58 |
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I wouldn't burn at 16x. 8x is the choice of most here 12x will probably work but why chance it. I burn all my TYGO2s and TYGO3s at 8x with good results
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