Suggestions on backing up old self written DVDs

[jmvdkolk]

Hi I'm brand new to MakeMKV and the forums but I failed to find anyone talking about my issue. About 18 years ago I converted my family's old home movies into DVDs and burned them onto 4 DVD+R DL discs. It's on me to have lost the original ISOs since doing this but now I'm trying to protect the memories better by ripping them all to ISO to preserve my menus. I'm having problems with 2 of the discs getting the exact same output:

Code: Select all

Backing up disc into folder "S:/Temp/MakeMKV/backup/HOME_MOVIES_D3.iso"
Calculated BUP offset for VTS #1 does not match one in IFO header.
Calculated MVOB offset for VTS #1 does not match one in IFO header.
Calculated TVOB offset for VTS #1 does not match one in IFO header.
DEBUG: Code 0 at z[K#?gp7+1^1<Yx='Q*F:121266097
Backup failed

The discs aren't 100% pristine, but they're so very barely scratched. I strongly suspect the problem is just the DVD layer chemistry itself degrading over time. Still, I've tried lightly polishing with a microfiber and also tried both discs on 2 separate drives.

Both discs play in a player just fine (or so I can tell) and both rip to ISO with DVD Decrypter which MakeMKV then turns into MKV files just fine. I'm a little worried that there's some corruption getting preserved and I just haven't found it yet, or am I just worried about nothing since the output of what I'm trying to do seems to be just fine? Does anyone have any other suggestions I should try?

[kaysee]

The files almost certainly are not encrypted, so you should be able to copy the files the usual way. You should verify the copies using hashes. (First copy the files from the discs to a hard drive, then calculate hashes of the files on the DVD discs, then compare with hashes of the copies.)

[flojo]

... am I just worried about nothing ...

This isn't like capturing from analog mediums like tape, so if the file is copying without any read errors, that's really the best you can do :-/.

You might want to escape the DVD format and try using HTML. If you don't know how to format HTML you could use something like "Sigil" to create a EPUB 3.0 file then use something to export the .epub to HTML. Note that EPUB 3.0 does support video so e-book readers like "Foliate" or "Calibre" work with embedded videos.

https://github.com/Sigil-Ebook/Sigil
https://github.com/Sigil-Ebook/sigil-us ... e/releases

https://calibre-ebook.com/download
https://github.com/johnfactotum/foliate

[AstralWanderer]

...both rip to ISO with DVD Decrypter which MakeMKV then turns into MKV files just fine. I'm a little worried that there's some corruption getting preserved and I just haven't found it yet, or am I just worried about nothing since the output of what I'm trying to do seems to be just fine? Does anyone have any other suggestions I should try?

Do a second rip (using other software such as ISOBuster, which has a good track record for data recovery) and, as Kaysee has suggested, compare hashes (if you don't have hash-generating software, consider HashCheck, which adds entries to the right-click menu in Windows Explorer - an update which supports SHA2/3 is available from GitHub but to cover data corruption MD5 should suffice). If you find a difference, try a third rip to see if it hash-matches either of the others. If all hashes differ and you can't see any difference, then "Eeny, meeny, miny, moe"...

Be aware that hard disks will fail over time also, so always keep backups - ideally in multiple locations in case of major disasters (fire, flood, burglary, etc).

[MartyMcNuts]

Hi I'm brand new to MakeMKV and the forums but I failed to find anyone talking about my issue. About 18 years ago I converted my family's old home movies into DVDs and burned them onto 4 DVD+R DL discs. It's on me to have lost the original ISOs since doing this but now I'm trying to protect the memories better by ripping them all to ISO to preserve my menus. I'm having problems with 2 of the discs getting the exact same output:

Code: Select all

Backing up disc into folder "S:/Temp/MakeMKV/backup/HOME_MOVIES_D3.iso"
Calculated BUP offset for VTS #1 does not match one in IFO header.
Calculated MVOB offset for VTS #1 does not match one in IFO header.
Calculated TVOB offset for VTS #1 does not match one in IFO header.
DEBUG: Code 0 at z[K#?gp7+1^1<Yx='Q*F:121266097
Backup failed

The discs aren't 100% pristine, but they're so very barely scratched. I strongly suspect the problem is just the DVD layer chemistry itself degrading over time. Still, I've tried lightly polishing with a microfiber and also tried both discs on 2 separate drives.

Both discs play in a player just fine (or so I can tell) and both rip to ISO with DVD Decrypter which MakeMKV then turns into MKV files just fine. I'm a little worried that there's some corruption getting preserved and I just haven't found it yet, or am I just worried about nothing since the output of what I'm trying to do seems to be just fine? Does anyone have any other suggestions I should try?

DVD decrypter is better at making DVD ISO's than MakeMKV. If your ISO's made from it work then you are done. It's possible the DVD's themselves have degraded enough to maybe cause a little corruption. If this is the case, there's nothing you can do about it. If DVD decrypter still successfully creates the ISO, that's the best you can do.