Totally stumped... DVD image creation fails at 99% (even though it worked before, NO visable scratches or dirt on the disc!)

Title pretty much says it all...

The disc I am attempting to back up is a home movie recorded on DVD (so the original is a DVD-R as well, making the problem likely totally unrelated to copywrite issues).
This disc a week ago was analyzed by DVD Shrink, worked fine, wrote to an image just fine, recorded from the image fine, etc. No problems at all.

Today I attempt to put the DVD in, attempt to make a back up copy image with shrink... all is going fine UNTIL the process fails at 99-100%. I then get a CRC/cyclical data redundancy error.

Now, I know most of the time this error is received because the disc is dirty or scratched making reading impossible. Well, I cleaned the disc, examined it for physical damage (scratches and knicks), the disc is in very good shape and is clean. Didn't change anything.

I tried using DVD decrypter, no dice.
I tried using NERO to make the image, again no dice.
I tried reanalyzing the disc, no dice.
The disc plays fine in all players.
This is the only disc causing problems. All others work fine.

I have no idea why this is happening. I tried reauthoring the DVD in shrink... I can view files (that is to say they play fine) UP UNTIL I reach chapter 20. Once I attempt to view chapter 20, it turns to GARBLE. Once I reach chapter 20, not only is everything thereafter garbled, *but* everything before (which previously viewed fine) is also now garbled.

However, when I play the disc in a player and use powerdvd, all chapters play fine.

I really don't know what to do. I suppose I could always re-record the home movie compilation, but that's a LOT of work. Besides, this "error" might happen to another one of my dvds some time int he future, and I'd like to know what to do about it.

 

Perhaps I should mention my DVD specs.

I typically rip my DVD's to images using my DVD read-only drive (as it seems to be faster/more efficient). It's a lite-on. That drive model is JLMS XJ-HD165H.

My burner is a NEC ND-2500A

The original DVD was recorded on a MEMOREX Disc which should be high quality.

The only problems I've had with my drive so far have been related to stupid newbie mistakes. For example, before I had my drive in PIO mode which was causing cyclical data redundancy errors on almost anything I attempted to create an image from. Then I figured out I didn't have the secondary IDE controller checked "enable DMA" for both drives (the read drive was in DMA, the burner was in PIO... doh!). That fixed the problems up nicely.

But now I have this new problem, and can't figure it out. I really, really, really hope someone's heard of it (failure to create image @ 99% even though the disc is physically flawless, AND even though it worked fine before)

 

This might have nothing to do with your problem, but since you are getting so far (99%) before you have a problem, are you sure you're not burning too close to the end of the disc? Maybe you could burn, say, 4300mb instead of 4400 (or whatever Shrink's default is)? Would cause a bit more compression in Shrink, but still.

Other than that suggestion I'm stumped, sorry.

 

Is it possible that you are trying to copy/burn an ISO file larger than 4GB on a FAT32 system??

This may cause some of your problems.

 

karen2003- thanks for the suggestion but that's likely not the issue, as the total size of what i'm trying to burn is 3.5 gb

colw- thanks, but its a NTFS file system.

Is there any way to "erase" dvd shrink's memory of having analyzed a disk already? I think perhaps this might be related to the problem... I think if I could just perhaps put it in fresh as if it never saw the DVD before and have it do a quick analysis again, I think that I might be able to do it.

 

flip218 - I wanted to make copies for both back up and for family/friends. I would have saved thte image but unfortunately I don't have that kind of hard disk space.

Well the memorex discs costed me like $70 from bestbuy so I should think they would be at least decent

Sorry, but I am very new to all of this...

 

flip218 - wow, thanks so much! that was really informative. I had no idea that memorex was inferior quality, AND i had no idea that data could "Degrade" over time. That might be the problem. However this stuff was recorded only 2 or so weeks ago. Could it really go bad that fast?

Fortunately, the memorex discs I bought i have ceased using. I learned of the superior quality (and price) of ritek G04's a short while ago and promptly bought quite a number from newegg. (Just so I'm sure, the ritek G04's from newegg are the ones with all the raving reviews, right ? they had a couple of ritek brands, but only one had about 200+ positive reviews so I figured that must be it and bought a few!)

Anyway, if the problem is that the cheap memorex discs have caused data to be lost, is there any way I can recover what I still have (it does after all only crap out at 99%, nearly 100% in fact_), or should I just record everything over on a g04?