DVD Replication nightmare.

[Alan92rttt]

Trai, Bill, and everyone else thank you for your assistance and you are all invited to help in any way you can.

Trai, This is not the layer break. Their is about 1 hour of video between the error and the layer break. I do not believe that is this caused by an improper setting of the layer break. When playing the DVD on a regular player, the layer break does happen properly at the point were it was set.

Alan

[Alan92rttt]

As I mentioned I tried the DVD in the laptop drive and the player locks at the “spot”

I then tried to copy the vob’s to the computers harddrive and I got a read error 1/2 way thru the 3rd vob.

In my opinion this verifies what I have been thinking. My belief has been that the disc has a marginal spot and that better players with faster drivers were able to try it enough times to get a good read.

If I’m wrong tell me and let me know how to proced.

[Account Closed for policy violations]

Hi Alan,

Well, the last job brought to me submitted on DVD+R DL had this issue! (good thing I don’t charge unless I find the answer and solve the situation, eh? 🙂

What you describe below is definitely a manufacturer error; try copying the disc to HD on another Windows machine, if you still get that copy error at the same location, you’ve got em (be sure to have snagit ready to grab a screenshot of the copy error messages).

If you get the same error on another Windows machine’s drive and you’d like some heavy artillery, send me one of the discs, and I’ll run Eclipse ImageAnalysis on it which will find the errors and document it nicely. I’ll send you the report in PDF form (that’ll get em for sure). No charge (but you might want to consider resubmission on DLT when the replicator agrees to redo the run. I’ll make you a deal there :-).

Take care,

Trai Forrester
TFDVD Research Labs
https://www.DVDVerification.com

[Anoni Moose]

I know nothing about what is being discussed here (reading and learning!), but I use a plextor DVD burner so I know they come with software (PlexTools) that analyzes all sorts of DVD parameters including various error rates that include the PI/PO rates that were mentioned. Might be interesting to run it on the disc(s). Don’t know how useful, but seems like it could be interesting.

[Alan92rttt]

I have the replicated DVD with me to see how the computers at work behave. I did capture a screen shot of the error on the laptop.

Please sent me an email about the prices for the verification and DLT to a92rttt@hotmail.com.

Thanks in Advance.

Alan

[Account Closed for policy violations]

Good to talk with you Alan,

After getting off the phone with you, I immediately added quite a bit to the first page of the “Why Verify the DVD?”
article (not quite putting what I was orginally thinking, though. 🙂

Everyone, please wish us luck. We’re possibly going to need some with this replication broker!

Take care,

Trai Forrester
TFDVD Research Labs

[Tsketteler]

I run the mastering dept at a CD/DVD replication plant and if you’d like you can send me one of the discs and I’ll let you know what’s wrong with it – no charge.

Scott Ketteler
ADS
2155 Niagara Lane North
Plymouth, MN 55447-4654

[Account Closed for policy violations]

Hi Scott,

We’ve got a soft read at the spot that looks like is causing problems (these results are consistent across several different replicas); here’s Layer 0:

I’m able to get a byte for byte compare of the Master to the replicas, but only if I’m using my Eclipse approved “reference” drive (Plextor PX-716A). A couple of other DVD writers I have drops some sectors (at that spot, about 3 gigs in) during the transfer to hard drive, and the compare between master and replica fail. Problem is, the replicator also gets a byte for byte successful compare, and their limited playback tests have not shown the playback glitch, so they’re reluctant to redo the run (they’ve offered a reduced rate redo).

I tried to look you up to give you a call (you mastering guys are always deep in the ‘DVD cave’, it seems! :-), and am sending you two of the replicas by mail (you have a CATS system, right?).

I’ve learned a lot on this one (no more declarative statements from me till I see the materials, no matter how much fun it is to guess!), and would certainly appreciate a better understanding of how to navigate a case like this (the replication broker is acting measured and reasonable). If this were a check disc, I would have politely refused it, requesting new glass masters until I got steady reads across the platter and could consistently transfer all the data off.

If you have any questions please let me know,

Trai Forrester
TFDVD Research Labs
Trai AT Comcast.net
800-213-2297

[Tsketteler]

I notice there is a red flag on the Eclipse analysis tab… If it’s a tracking servo error or unreadable sectors then you’ve probably got POF errors. When the Eclipse software has trouble reading a disc it keeps dropping the speed down until it can recover the read or can’t and then will report some type of read error.

The graph from the screen shot shows that the disc has a defect at that specific radius on the discs – either a dent causing a spike in radial noise and/or there might have been a scratch, spot, pinhole, etc on the stamper or mirror block causeing a spike in digital errors (PIE, POF, PIF).

From what I’ve seen & read here your problem is a manufacturing/replication defect. Visually check the disc around this location, looks to be around radius 35 – 40mm for a defect. When I get the discs I’ll run them on our CATS system and see exactly what’s up.

If you’d like you can call me at 763.449.5577. Also, we have a website http://www.ads-cd.com but it seems to be down today – they’ve been upgrading our T1 lines…

Best Regards, -Scott

[Account Closed for policy violations]

Thanks Scott,

Yes, the disc has other logical issues, but no unreadable sector/SCSI errors or warnings; which is what makes this one a bit tricky. I believe your analysis of imperfection at that location is correct, and I’ve got to be able to prove it to a replication broker (not as knowledgeable and technical as you are), which is hard to do if both their and my (on a ‘reference drive’) comparison tests have shown all the data on the Master is on the replica.

The discs are in the mail, and look forward to your findings.

Thanks again,

Trai