This Blu-ray Disc needs a library for AACS decoding, and your system does not have it. Your input can't be opened: VLC is unable to open the MRL 'bluray:///F:/'. Check the log for details. What is an AACS decoder? AACS is the abbreviation for Advanced Access Content System. Next, in the Dynamic AACS Library section, click the hyperlink to the file associated with your version of VLC Media Player. Once the download is complete, copy the KEYDB.cfg file. Press the Windows + R key to open Run. Enter%Appdata% and click OK. In the Roaming folder, click on the New Folder icon at the top. Rename the folder to aacs. Navigate to your download folder and copy the libaacs.dll file to your clipboard. Use File Explorer to navigate to the install location of VLC and paste it there. The default location is. Open VLC and open the Blu-Ray disk that was previously failing with the “This Blu-Ray Disc needs a library for AACS decoding”.
Errors You May Encounter When Playing Blu-ray in VLC on Windows 10 or Mac OS X
“I downloaded the latest version of VLC which is 2.1.3 Rincewind. Then I followed the instructions above and put everything in the right directory, but when I try to ply the blu ray disc, I get this error message:
Blu-ray error: This Blu-ray Disc needs a library for AACS decoding, and your system does not have it. Your input can’t be opened: VLC is unable to open the MRL ‘bluray:///D:/’. Check the log for details.”
Conceivably, VLC is the most popular as well as powerful free and open source tool in the market. The 2.0 and later version of VLC Media Player support Blu-ray media playback with some extra operations. You can download the latest version from VLC official website. However, for legal reasons, AACS and BD+ DRM libraries and keys still are not shipped. That means only Blu-ray disc with AACS libraries exposed are supported.
How to Play Blu-ray Freely with VLC Media Player on Windows 10 or Mac OS X?
Step 1: Go to videolan.org, download, install and run the latest version of VLC for your system.
Step 2: Go to: http://vlc-bluray.whoknowsmy.name/ to download the KEYS DATABASE(KEYDB.cfg) and AACS DYNAMIC LIBRARY(libaacs.dll for Windows or libaacs.dylib for Mac).
For Windows 10 Users
1. KEYS DATABASE
* Open your user area (“C:Usersyour usernameAppData”)
* Enable view hidden files and folders (Under Folder Options – View tab then select “show hidden files…”->select ok)
* Open “AppData” directory or create a folder and name it aacs
* Place the downloaded KEYDB.cfg file in this folder directly.
Download Install AACS dynamic library for VLC to use:
2. AACS DYNAMIC LIBRARY
* Go to “c:Program Files” [Or “c:Program Files (x86)” if running 64bit]
* Navigate to “VLC” directory, and move the libaacs.dll file into it.
Aacs Library Vlc
Now, you can easily play Blu-Ray disc with VLC on Windows for free. Note: The latest VLC still doesn’t have menu support yet.
For Mac users
You may navigate the corresponding folder and move into the necessary files as follow. Go to: http://vlc-bluray.whoknowsmy.name/, get the necessary files.
1. KEYS Database
Mac OS: put it in ~/Library/Preferences/aacs/ (create it if it does not exist)
2. AACS Dynamic Library
Mac OS: right-click on VLC, choose “Show package contents” and put that file in Contents/MacOS/lib/
Tip: VLC does not yet support Blu-ray menus so you must manually select title to play. Not all Blu-ray movies are supported.
In fact, not all the Blu-ray discs are supported. VlC can only deal with discs which its library has the corresponding AACS keys. However, for legal reasons, AACS and BD+ DRM libraries and keys still are not shipped.
What to do when VLC Won’t Play Blu-ray
In case there are a lot of unsolved problems that you are experiencing every now and again when it comes to playing Blu-ray with VLC, there are better options that you can adopt so that you can continue to enjoy your Blu-ray videos.
Aacs Decoding Library Vlc
One of these alternative methods is to use U2USoft Blu-ray Player, which is current the best, cheapest and most professional Blu-ray playing software working on Windows 10/8.1 Blue/8/7/Vista/XP, which is capable of playing various kinds of Blu-ray discs/Blu-ray folders/ISO image files, 4K UHD or 1080P HD videos and other popular video/audio formats, including MKV, AVI, FLV, MPEG, WMV, MXF, MTS, M2TS, MP4, MP3 etc.
Aacs Library Vlc Software
The other one method is U2USoft Blu-ray Ripper, which is one of the powerful Blu-ray Rippers and converters in the market today. It has the ability to rip convert any commercial and homemade Blu-ray including DVDs to any format that you think of. These formats include AVI, MOV, MKV, M4V, FLV, 3GP, MPG, ASF, VOB, TS, HD MP4, HD AVI, HD MKV, HD WMV, HD MOV, MP3, WAV, AC3, AAC, MKA, OG among others. It Performance is a comparison to a common Blu-ray ripper. By just a single click, you can convert your Blu-ray movies, with fast speed and high quality.