www.makemkv.com

Hello,

I'm trying to play a commercial Blu-ray with VLC, but only one specific disc fails.

Environment:
- Windows 11 64-bit
- VLC 3.0.23 (official release)
- Also tested with VLC 4.0 nightly
- External Blu-ray drive: HL-DT-ST BP71NB10 (firmware 1.03)
- libaacs installed
- Latest KEYDB.cfg installed
- MakeMKV v1.18.4 installed
- MakeMKV successfully opens this disc without errors

Disc:
- Yorushika LIVE "Gekkou"
- Product code: UPXH-1079
- AACS version: v76

Problem:
The disc cannot be played in VLC.

Depending on the configuration, VLC reports either:
- "No valid Processing Key found in AACS config file"
or
- "Nothing to play"

What works:
- Another Blu-ray from the same artist ("Yorushika LIVE Zense") plays correctly in VLC on the same PC.
- The Gekkou disc plays correctly in Leawo Blu-ray Player.
- MakeMKV successfully opens the disc.
- Main title: about 20.4 GB
- 25 chapters detected.
- No errors are reported by MakeMKV.

Already tested:
- Latest KEYDB.cfg
- libaacs.dll
- VLC 4.0 nightly
- MakeMKV Integration (libmmbd)
- Replaced libaacs.dll and libbdplus.dll with libmmbd64.dll
- Directly opening the largest M2TS file
- Another Blu-ray ("Yorushika LIVE Zense") works correctly in VLC on the same PC
- Leawo Blu-ray Player plays this disc successfully

None of these solved the problem.

Is this a known compatibility issue between VLC/libbluray and this particular Blu-ray (AACS v76)?
If necessary, I can also provide VLC debug logs and MakeMKV logs.

Thank you.

This is very strange, since if the integration is done properly VLC should be able to open any Blu-ray disc that MakeMKV is able to open...

The "correct" possible workaround :

You could try making a decrypted backup of the disc, then turning that backup into an ISO file with IMGBurn (https://www.imgburn.com/ - be sure to use the UDF 2.50 file system when creating the ISO), and opening that ISO file with VLC.

The "not quite as recommended" possible workaround, but it would be interesting if it worked :

Would you mind downloading FindVUK 1.83 from the download link at the bottom of the first post in this thread : https://forum.doom9.org/showthread.php?t=172472 ?

Unzip it. Then install the trial version of DVDFab (https://www.dvdfab.cn/), close DVDFab, and run FindVUK.exe with the troublesome disc inside your Blu-ray drive (you may need to add an exception for FindVUK if you have antivirus software). Wait until the process is complete. Run "FindVUK - Synchronize.bat" afterwards, then try playing the disc again directly from the Blu-ray drive with VLC.