Due to Digital Rights Management system, most of the commercial Blu-rays are under high copy protection like: AACS, BD+, Cinavia. Maybe some of you still don’t understand Blu-ray copy protection, don’t worry, in this page, I will cover what is Blu-ray copy protection, and how to remove Blu-ray Copy protection.
Part One: What is Blu-ray Copy Protection?
The Blu-ray Disc standard mandates that all pre-recorded discs be protected by a copy-protection scheme. The copy protection used on pre-recorded discs is in practice only applied to the stream files and not to any other files that make up the format. There are several distinct levels of copy protection for pre-recorded discs.
The first level of copy protection applied to pre-recorded discs is the Advanced Access Content System (AACS) developed by the AACS Licensing Administrator, a consortium of companies including Disney, Intel, Microsoft, Panasonic, Warner Bros., IBM, Toshiba and Sony. It is based on Advanced Encryption Standard (AES), a robust 128-bit key encryption system developed by the US government.
AACS includes a system by which the keys assigned to a particular player can be “revoked” for future Blu-ray disc releases if it is determined that those keys have been compromised. When a newer Blu-ray disc is inserted into an older drive, the drive is required to check the version of the “Media Key Block” (MKB) on the disc and, if it is newer than the one the drive has internally, to copy over to permanent non-volatile memory the newer MKB. Thus playing newer discs propagates the revoked key lists out to all drives.
AACS was broken beginning in late 2006, and numerous AACS decryption programs are available online. The key revocation system ensures, however, that the AACS licensing organization and the hacker community are constantly playing a cat-and-mouse game.
BD+ is a second level of copy protection that is optional for pre-recorded Blu-ray discs. After the stream files are encrypted using AACS encryption, they are further mangled randomly with instructions on how to repair the mangled files stored on the disc as special BD+ instructions. These instructions run in something called a “BD+ virtual machine”, special software that Blu-ray players are required to include. The virtual machine on the player runs the BD+ code on the disc and retrieves something called the “Fix-up Table” (FUT) to repair all the BD+ mangled regions on the disc.
BD+ was broken in 2008 by reverse-engineering the BD+ virtual machine. Each new BD+ Blu-ray disc release brings new twists in the virtual machine programs, each of which are again reverse-engineered by the hacker community. Just as with AACS, BD+ has become a cat-and-mouse game.
Currently, the BD+ system is owned by Irdeto, which bought it from Rovi Corporation in 2011.
Cinavia, developed by a company called Verance, is a newer level of copy protection that is optional on Blu-ray discs. The system involves “steganography” or watermarking, in which a special encrypted data signal is hidden within a single audio channel in an audio track. Verance claims the Cinavia signal is inaudible, and that the signal can survive audio compression and recompression.
When a player with Cinavia support detects a Cinavia signal on a Blu-ray disc, it can verify whether playback should be allowed. The player can display one of four possible messages known as “Cinavia message codes”. The most commonly viewed messages are (1) “Playback Stopped” and (3) “Audio Muted”. Message (1) is supposed to stop distribution of “camcorder” recordings of first-run movies from theaters if the theaters include a Cinavia signal in the movie soundtrack. Message (3) is supposed to stop unencrypted ripped copies of movies. There is apparently no exception for consumer backup copies.
Cinavia detection became a requirement for Blu-ray players beginning in 2012. To date, the only major studio that appears to be using Cinavia is Sony Pictures, and that is not even for all releases. Most of the major studios seem to be hesitant about including Cinavia protection, perhaps because the system involves expensive royalty fees, or perhaps for fear of angering customers.
Customers have a reason to be angry, because unlike all the other protection schemes on Blu-ray and DVD discs, Cinavia protection is destructive and permanent. Audio tracks that include Cinavia have been deliberately damaged, and the damaged audio is present both for legimitate customers and for the supposed content pirates. When the audio track is protected with Cinavia, legitimate customers do not get the pristine audio content they paid for on their Blu-ray discs.
The Cinavia encoding system was broken in 2013, but it has proven very difficult to remove the protection and restore the protected audio track back to its original state. One ripper tool company claims to be able to do this, but their success rate is apparently spotty. Other ripper tool companies have figured out schemes to disable or fool Cinavia detection in players. Some stand-alone players (e.g. Panasonic, Oppo) have firmware patches available to remove Cinavia detection.
Part Two: How to Remove Blu-ray Copy Protection?
Although remove Blu-ray copy protection involves legal issues, however, many people believe that removing Blu-ray disc encryption is reasonable and lawful because they feel the “fair use” provision of copyright law should override any provisions against removing encryption.
Actually, it’s not an easy job to remove Blu-ray copy protection and rip/backup Blu-ray movies, and the freeware HandBrake, MakeMKV are not capable to deal with latest Blu-ray copy-protection. After multiple tests, I find Brorsoft Blu-ray Ripper for Windows | Mac is up-to-date to remove latest Blu-ray copy protection like: AACS, BD+, Cinavia, UOP, DRM, BD-ROM Mark and High-bandwidth Digital Content Protection, yet easy-to-use to rip or backup Blu-ray contents on your computer’s hard drive with excellent quality and 6X fast speed.
Free download best Blu-ray decrypter:
Guide: Remove Blu-ray copy protection and make a duplicate copy
Windows Version Brorsoft Blu-ray Ripper taken as example, Mac share the same steps. Just keep in mind you have download the right version, Windows platform .exe files cannot be installed on macOS – and vice versa.
Step 1. Load Blu-ray movie
Install and launch the best Blu-ray decrypter, click “Load disc” button to load your Blu-ray movies to this program.
Step 2. Three ways to rip/copy Blu-ray movies
1.1 Rip Blu-ray to a proper format
Go to Format bar and select a proper format i.g. H.264 MP4 format from Common Video or HD Video category.
Or you can select the preset setting according to your devices.
1.2 Copy the whole Blu-ray discs with original structure
Click the quick button “Copy the entire disc” to start copying Blu-ray movies to computer’s hard drive, including the menus, titles, ads, etc.
1.3 Copy Blu-ray main movie only
Click “Format” bar, choose “Copy” > “Directly Copy” from the Format menu and then specify a folder to save the M2TS files from Blu-ray disc. Then you will get the movie without any ads, trailers.
Step 3. Start removing Blu-ray copy protection
With all settings, click the Convert button to remove Blu-ray copy-protection: AACS, BD+, Cinavia and rip/copy Blu-ray contents on your computer’s hard drive.
Once finished, click Open to get the ripped videos, then playback them on any portable device or media player without hassle.
If you not only want to rip Blu-rays, but also intent to rip DVDs or HD Videos such as 4K XAVC/XAVC-S, MXF, M4V, AVI, MKV,etc. videos for playback, Brorsoft Video Converter Ultimate (or iMedia Converter for Mac) will be your first and best choice.