New user trying to decrypt a number of 4K UHD blurays, all give "unknown volume key"

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lonnym
Posts: 5
Joined: Sun May 18, 2025 4:16 pm

New user trying to decrypt a number of 4K UHD blurays, all give "unknown volume key"

Post by lonnym »

I have reported all of these to "svq@makemkv.com". However, it's suspicious that none of these worked. They're a cross-section of mainstream and more "boutique" titles across a variety of vendors:
  • 88 Films "Hell of the Living Dead" 4K UHD
    Scream Factory "John Carpenter's Vampires" 4K UHD
    Kino Lorber "Stephen King's Graveyard Shift" 4K UHD
    Criterion Collection "Godzilla vs. Biollante" 4K UHD
    Severin's "Rats Night of Terror" 4K UHD
    Vinegar Syndrome's "Brimstone & Treacle" 4K UHD
    Universal's "Nosferatu (2024)" 4K UHD
    Blue Underground's "Venom" 4K UHD
    Paramount's "Smile 2" 4K UHD
I believe I have the firmware flashed properly for my LG BP50NB40 (firmware is BP60NB10 1.00). Everything looks like it's working correctly, but I didn't expect to encounter "unknown volume key" for _every_ disc I tried.
lonnym
Posts: 5
Joined: Sun May 18, 2025 4:16 pm

Re: New user trying to decrypt a number of 4K UHD blurays, all give "unknown volume key"

Post by lonnym »

Update: I finally found a UHD disc that worked. I was able to successfully rip Sony/Columbia Picture's "2012" UHD blu-ray. So I guess it must be pretty commonplace that movies' keys are not yet available. Hopefully in a few days the titles below will work as well?
MrPenguin
Posts: 956
Joined: Thu Oct 19, 2023 11:31 pm

Re: New user trying to decrypt a number of 4K UHD blurays, all give "unknown volume key"

Post by MrPenguin »

lonnym wrote:
Sun May 18, 2025 8:26 pm
Update: I finally found a UHD disc that worked. I was able to successfully rip Sony/Columbia Picture's "2012" UHD blu-ray. So I guess it must be pretty commonplace that movies' keys are not yet available. Hopefully in a few days the titles below will work as well?
Yes, but all you need to do is email the TGZ dump file that MakeMKV creates to svq@makemkv.com and then wait for its key to be generated. While you're waiting, you can also try posting those same TGZ dump files here so that The Powers That KEYDB can examine them too.

You can download the KEYDB.cfg file, copy it into MakeMKV's data directory (i.e. where MakeMKV also writes its TGZ dump files) and restart MakeMKV. This will allow MakeMKV to use your KEYDB.cfg file as a "fallback" database.
lonnym
Posts: 5
Joined: Sun May 18, 2025 4:16 pm

Re: New user trying to decrypt a number of 4K UHD blurays, all give "unknown volume key"

Post by lonnym »

OK, here are the first 3 TGZ files...
Attachments
MKB20_v77_Graveyard_Shift_C6A3.tgz
(114.15 KiB) Downloaded 38 times
MKB20_v77_GODZILLA_VS_BIOLLANTE_AB01.tgz
(79.34 KiB) Downloaded 7 times
MKB20_v76_Hell_Of_The_Living_Dead_EE81.tgz
(121.74 KiB) Downloaded 20 times
lonnym
Posts: 5
Joined: Sun May 18, 2025 4:16 pm

Re: New user trying to decrypt a number of 4K UHD blurays, all give "unknown volume key"

Post by lonnym »

...here are the next batch of 3...
Attachments
MKB20_v77_RATS_NIGHT_OF_TERROR_UHD_0EE3.tgz
(121.33 KiB) Downloaded 183 times
MKB20_v77_Nosferatu_EF45.tgz
(195.21 KiB) Downloaded 9 times
MKB20_v77_John_Carpenter's_Vampires_95DB.tgz
(136.61 KiB) Downloaded 10 times
lonnym
Posts: 5
Joined: Sun May 18, 2025 4:16 pm

Re: New user trying to decrypt a number of 4K UHD blurays, all give "unknown volume key"

Post by lonnym »

...and here's the final batch of 3...
Attachments
MKB20_v77_VS497UHD_882B.tgz
(111.38 KiB) Downloaded 49 times
MKB20_v77_VENOM_D16B.tgz
(119.91 KiB) Downloaded 17 times
MKB20_v77_Smile_2_129B.tgz
(221.28 KiB) Downloaded 9 times
keydb_helper
Posts: 280
Joined: Fri Sep 06, 2024 4:47 pm

Re: New user trying to decrypt a number of 4K UHD blurays, all give "unknown volume key"

Post by keydb_helper »

lonnym wrote:
Sun May 18, 2025 4:26 pm
I have reported all of these to "svq@makemkv.com". However, it's suspicious that none of these worked. They're a cross-section of mainstream and more "boutique" titles across a variety of vendors:
  • 88 Films "Hell of the Living Dead" 4K UHD
    Scream Factory "John Carpenter's Vampires" 4K UHD
    Kino Lorber "Stephen King's Graveyard Shift" 4K UHD
    Criterion Collection "Godzilla vs. Biollante" 4K UHD
    Severin's "Rats Night of Terror" 4K UHD
    Vinegar Syndrome's "Brimstone & Treacle" 4K UHD
    Universal's "Nosferatu (2024)" 4K UHD
    Blue Underground's "Venom" 4K UHD
    Paramount's "Smile 2" 4K UHD
I believe I have the firmware flashed properly for my LG BP50NB40 (firmware is BP60NB10 1.00). Everything looks like it's working correctly, but I didn't expect to encounter "unknown volume key" for _every_ disc I tried.
7 of your 9 titles are already supported by the public keydb. Until MakeMKV supports your discs natively you can backup your discs by following my instructions here or using SamuriHL's utility for Windows (Link)

Your two problematic titles are MKB20_v77_VENOM_D16B and MKB20_v77_RATS_NIGHT_OF_TERROR_UHD_0EE3. Could you please zip and attach the MKB_RO.inf files from these two discs to the forum? You'll find this file in the AACS folder on each disc and it is a distinct file for each title.
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