Blu-ray discs employ several DRM mechanisms such as AACS and BD+. A media player such as VLC requires thelibaacs.dllandkeyDB.cfglibraries for blu-ray playback. These library files are necessary to bypass the AACS and BD+ protection.
Without these, it cannot access the encrypted data on the disc, and thus displays theThis blu-ray disc needs a library for AACS decodingerror message.
In this article, we’ve concisely listed the necessary steps to fix this error, as well as other similar issues that you may face with VLC and blu-rays.
How to Fix “This Blu-ray Disc Needs A Library” Error
Thelibaacsfile can fix the problem faced by VLC whiledecrypting the contentsof a Blu-ray disc using known AACS keys. These keys, also called Volume Unique Keys (VUK) or Unit Keys, are stored in thekeyDBdatabase file.
Thus, the fix is simple. Download and place these files in the appropriate location with the steps listed below:
On Windows
Here are the steps to resolve the VLC AACS Decoding issue in Windows:
On Mac
You can resolve the blu-ray AACS decoding issue in macOS with the steps listed below:
How to Play Blu-rays using VLC?
By default, you may’t play Blu-rays using VLC as it’s not supported. But if you’ve downloaded the necessary libraries, as shown above, it’s possible to play Blu-rays with the following steps:
Error “Missing AACS Configuration File! No Valid Processing Key Found in AACS Config File”
If you’re trying to play a Blu-ray disc using only thelibblurayfile, you may encounter this error. You can easily fix these errors by downloading the necessary libraries. The steps to do so are listed in the guide above.
If you already have the necessary libraries but you still encounter this error, it’s likely because the current library file is corrupt. Downloading a new file using the same steps should be helpful in this case.
How to Fix “Your Input Can’t Be Opened” Error
This is a common VLC error that can happen due to numerous reasons. But in the case of blu-rays specifically, it’s likely due to file ownership issues. Once again, you can fix this error by downloading the necessary decoding libraries.
Why is My Blu-ray Disc Not Working?
The most common reasons why Blu-ray discs stop working include:
Resetting your BD playerand addressing the issues listed above can fix this problem. In some cases, turningoffthe Parental Control and BD ROM 24 Output settings can also be helpful.
How to Update VLC to the Latest Version
you’re able to download the latest version of VLC from theofficial VideoLAN site. Alternatively, if you already have VLC installed on your PC, you can follow the steps listed below:
