Disk degradation

[LARRYB]

I asked this question about 2-3 years ago and did not get a answer that I thought was going to solve the issue.
I just had it happen last night and thought I would repost the issue and see if someone else has experienced or has a answer.

Making backups onto DVD-R or DVD+R disk will work just great for about 3 or 4 times. If the disk sets for a while (1 to 3 months) in a jewel case and in a rack. The movie will start breaking up (just like a finger print). Inspecting the disk reveals no smuges or finger prints.

After cleaning the disk with a good cleaner I still get the same issues. Some of the disks when close inspection I notice small spots inside the dvd media material. Sometimes it is just a slight discoloration about the size of pin heads. Some other disk have
streaks in the media. I know this is not caused by my handeling or exposer to UV light, ETC...

Now for the kicker. If I take that DVD back to my computer and run DVD Decryper it will copy the bad disk and I can then reburn onto a new DVD and everything is fine until the next time.

I am using Memorex, Verbatium DVD's and it has occured on both types.


Any ideas????

Larry

[blutach]

If your computer drive can read the disc no problems, then the issue lies with your standalone player. Clean the lens.

Regards

[burfadel]

Burnt DVD's are best kept in the dark, they use photosensitive ink that 'degrades' when exposed to light.

[r0lZ]

You're lucky if your DVD drive can read them! I have exactly the opposite issue: my standalone are able to play some DVDs without problems (or with unnoticeable error correction), but my PC drive cannot read them without a lot of read errors! I have to redo the whole work of ripping the original DVD, removing useless stuff, shrinking it, and burn it again! Rhaaa!

[Taurus]

Just out of curiosity:
Are there any chemicals nearby?
I mean aceton, agent spirit, etc?
Salty air? A moulded room? Who knows:D ß
I have CD/DVD's almost 10 years old and they are still working fine.
No sign of crackling layers or death spots.
@now I'm using only Verbatim, but in the past almost anything that money could buy.
My storage is in a dry room, hidden from any light source.

[LARRYB]

No issues like that.

I live in the midwest, very dry humditity, DVD's down stars in the basement.

At first many years ago I used my first DVD burner that the tracking was not true any more. Could not read those disk on anything but that drive. Have gotten 3 more since then. My lastes is a HP DVD940i.

I have been buying a new DvD about every 2 years and use the old one as a second drive.

Anyone else recommend a better drive???

Larry

[Guest]

I like Plextor anything.

[Jeffster]

No issues like that.
Anyone else recommend a better drive???


Perhaps you will find some helpful information in this thread (http://club.cdfreaks.com/f61/top-5-optical-drives-2008-cd-freaks-members-choice-249785/index2.html#post2149206).

Of course time doesn't stand still in the pc hardware world but it may give you a starting point. :)

[CWR03]

You might try burning at a slower speed. I've looked at several burned disks under a microscope, and lower-speed burns have a sharper definition. If it's already fuzzy right after the burn, the bleeding that occurs naturally in the pigment over time will more quickly make the disk unreadable.

[LARRYB]

CWRO3, I think you have the answer.

Last night I watched a DVD that I burned about 5 years ago and noticed that it was working great.

Then I was thinking that most of the DVD's I'm having trouble with were with the higher speed and newer DVD burners.

Will have to slow down and see if it is the problem.....

Thanks for the input...

Larry

[CWR03]

I've read here and on other forums (and take the advice myself) that you should never burn faster than half the maximum rated speed of the drive or media, whichever is slower. I just hope I use up the rest of these 8x disks soon - I hate burning at 4x.

[MysticE]

I've read here and on other forums (and take the advice myself) that you should never burn faster than half the maximum rated speed of the drive or media, whichever is slower. I just hope I use up the rest of these 8x disks soon - I hate burning at 4x.
Unfortunately these sort of generalizations (myths?) can often result in inferior burns with modern burners and media. Many times I see posts where folks say "I burn at 4X for quality purposes", or 'the rule of thumb is to burn at half speed'.

Here's an example of a well reviewed LG burner “LG GH22LP20 is a solid performer and an excellent choice for reliable CD and DVD burning at record speeds. It effortlessly produces quality burns faster than most other drives to date. We highly recommend it.” paired with Taiyo Yuden discs.

SONY DVD-R 16X ( TYG03 )
Batch #GH000073 - 0909
LG GH22NP20 1.00 ...Nero CD/DVD Speed 4.7.7.15
Burn Speed 4X

Note the quality score of this 4X burn.

http://file.walagata.com/w/mysticx/LG_GH22NP20_1.00_4X.png

Great media and a slow (for quality?) 4X burn has produced a garbage burn. 16,112 PO Failures?

Let's move up a few notches.

SONY DVD-R 16X ( TYG03 )
Batch #GH000073 - 0909
LG GH22NP20 1.00 ...Nero CD/DVD Speed 4.7.7.15
Burn Speed 12X

Now note the quality score whan burned at 12X.

http://file.walagata.com/w/mysticx/LG_GH22NP20_1.00_12X.png

The thing is it's easy to find the right combination of burner/media/speed. The insane folks at CDFreaks are allways testing and posting Quality scans. You don't have to do any testing youself, just peruse their forums.

When considering a new burner check out CDFreak's reviews. They always test various media and post the results for each burner. Making it simple to get a nice burner media match.

I like TYG02 (8X -R) discs. They are priced right and tend to work well in most burners and players, new and old. The reviews showed that the Pioneer 115D did well with these.

Here's 2 of my Pioneer burned scans (I use my BenQ for scanning).

These discs were both burned at 12X... over the rated speed of 8X.

http://file.walagata.com/w/mysticx/115D_TYG02_12n.jpg

http://file.walagata.com/w/mysticx/4900666.jpg

Needless to say I'm pleased. Usually when folks have to slow down the burn it denotes a less than ideal media/burner match. One size does not fit all.