Unreadable DVDs?

[LoveFilmMuch]

I’ve recently run into a bunch of DVDs that have these ‘tracks’ in them that kinda resemble records (see attached picture).. having no joy whatsoever getting them to read on any of my drives, what are they called and is there any way to read them?

[MartyMcNuts]

I’ve recently run into a bunch of DVDs that have these ‘tracks’ in them that kinda resemble records (see attached picture).. having no joy whatsoever getting them to read on any of my drives, what are they called and is there any way to read them?

They are circular scratches. Probably can't be read. I've heard of some folks trying a bit of toothpaste, smoothing it out to fill in the grooves/scratches.

I'd just forget about it. They are likely no good.

[LoveFilmMuch]

These are not scratches, the discs play normally in my blu-ray player, one is even brand new, these patterns are from factory and are instantly ‘failed’ when trying to open on PC/MakeMKV, you may never have seen them before, they are pretty rare.. I have 3in1500 discs,
The Firm - DVD
The BFG - DVD
Mr Holmes - DVD
I may have to give up on them but it is most certainly not damage

[Woodstock]

You mention that they're DVDs... I've had (long ago!) some disks that were DVD/CD combos, where the outer portion was a CD, the inner portion a DVD. These wouldn't happen to be versions of these, would they?

Can't say that I ever tried ripping them for video; they could be played/ripped as CDs, though.

[LoveFilmMuch]

Further follow up, these disc play fine using VLC without enabling any MakeMKV decryption etc.
When trying to open with MKV it fails instantly with a ‘IFO file for VTS #0 is corrupt, VOB file must be scanned…’
Followed again instantly with ‘Failed to open disc’

[LoveFilmMuch]

You mention that they're DVDs... I've had (long ago!) some disks that were DVD/CD combos, where the outer portion was a CD, the inner portion a DVD. These wouldn't happen to be versions of these, would they?

Can't say that I ever tried ripping them for video; they could be played/ripped as CDs, though.

Possible but they show as DVDs in my Blu-ray player, I don’t have a CD player I could test the theory properly with

[MartyMcNuts]

These are not scratches, the discs play normally in my blu-ray player, one is even brand new, these patterns are from factory and are instantly ‘failed’ when trying to open on PC/MakeMKV, you may never have seen them before, they are pretty rare.. I have 3in1500 discs,
The Firm - DVD
The BFG - DVD
Mr Holmes - DVD
I may have to give up on them but it is most certainly not damage

Wow, they look like scratches! Never seen a DVD looking like that before then. Then again I haven't even touched a DVD in 18 years! Only BD and UHD for me!

[jackwilliam11]

These are not scratches, the discs play normally in my blu-ray player, one is even brand new, these patterns are from factory and are instantly ‘failed’ when trying to open on PC/MakeMKV, you may never have seen them before, they are pretty rare.. I have 3in1500 discs,
The Firm - DVD
The BFG - DVD
Mr Holmes - DVD
I may have to give up on them but it is most certainly not damage

It’s interesting you mention that—those factory-pressed patterns do show up once in a while, and they can definitely confuse PC drives even if standalone players read them fine. MakeMKV can be picky with certain mastering quirks. If your Blu-ray player handles them but multiple PC drives fail instantly, it’s likely a manufacturing anomaly rather than actual damage. Frustrating, but it makes sense why those specific discs won’t rip properly.

[Ezatoka]

Did you try another DVD opening mode?

viewtopic.php?f=7&t=28541

[LoveFilmMuch]

Did you try another DVD opening mode?

viewtopic.php?f=7&t=28541

Yes, I have tried all of them,
I will post the log(s) in a bit when I’m back at the PC

[LoveFilmMuch]

Wow, they look like scratches! Never seen a DVD looking like that before then. Then again I haven't even touched a DVD in 18 years! Only BD and UHD for me!

A charity shop chain near me is doing 10 dvds for £1, their main (super) store stock gets 200-300 dvd donations a week so I’ve been taking advantage, while I will upgrade some of these to DB/UHD I can boost my collection massively for cheap.. the biggest drawback is drive wear, thankfully they have all broken within the warranty period as I’m backing up so many discs.

Do you think, if there isn’t a simple solution to this I can get one of these unusual discs to the person who makes MakeMKV for a look?

[Ezatoka]

Looking at http://www.wiki.redump.org/index.php?ti ... ping_Guide their example image looks kinda like that, doesn't it?

[LoveFilmMuch]

Looking at http://www.wiki.redump.org/index.php?ti ... ping_Guide their example image looks kinda like that, doesn't it?

That is the closest thing I've seen thus far, thank you!
I will see if this guide works for me

[LoveFilmMuch]

For reference;

Log - (All read modes generate the same log when attempting to open the disc)

001011:0000 Using LibreDrive mode (v06.3 id=866A98CB9C4E)
003007:0000 Using direct disc access mode
003002:0000 Calculated BUP offset for VTS #0 does not match one in IFO header.
001003:0020 DEBUG: Code 0 at J,>KF1g5~|FZ:':29400071
003042:0000 IFO file for VTS #0 is corrupt, VOB file must be scanned. This may take very long time, please be patient.
001003:0020 DEBUG: Code 0 at J,>KF1g5~|FZ:':29400071
001003:0020 DEBUG: Code 0 at +|jyCzW.`>:eX>@n&:121262854
005010:0000 Failed to open disc