Outline: Want to protect Blu-ray discs, back up Blu-ray to external hard drive or cloud storage, copy Blu-ray to NAS server, play Blu-ray on portable devices, decrypt Blu-ray to H.265 MKV, remove Region Code issues, etc? No matter which goal you want to get, you'd better get an excellent decent Blu-ray Ripper, sometimes aka Blu-ray Decrypter to help you.
Classification of Blu-Ray Disc Copy Protection
Blu-Ray Disc Copy Protection
Commercial pre-recorded Blu-ray discs are typically protected with some form of copy protection. These encryption mechanisms restrict people where to play the Blu-ray discs and prevent people from extract the movie from the physical disc. Below part aims to instruct people how these copy protection schemes work and what kind of legal rights consumers may have.
Advanced Access Content System (AACS) is the first level of copy protection applied to pre-recorded discs, 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.
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.
Region Codes are pieces of data that are embedded into Blu-Ray Discs to act as a restriction. This data, or region code, is read by the player and if it doesn’t recognize the region code as compatible or local, the disc will not play. Since region codes are specific to certain geographical locations, a disc can typically only be read and played by a Blu-Ray Player that was manufactured or intended for use in that same specific region. In total, there are 3 separate Blu-Ray region codes. These codes are classified alphabetically as Region A, Region B, and Region C. The following is guide map of Blu-ray region codes. This map shows the different Blu-ray codes and which areas they are utilized in.
What is Best Blu-ray Decrypter?
As a top Blu-ray Decrypter, Pavtube ByteCopy for Mac can help you back up Blu-ray collection to multi-track MKV without quality loss, ripping BD movies to MP4 and MOV with multiple audio streams, and converting BD from hard discs to virtually any popular video and audio format.
ByteCopy for Mac can be used as movie backup tool which can lossless backup BD to MKV with all languages and subtitles, but also encode source movie to multi-track MP4, MOV, and Apple ProRes MOV for FCP X, smartphones, tablets, HD media players, game consoles, and more. You can keep original video quality and meanwhile convert the TrueHD audio to Dolby Digital 5.1 audio when/if your device does not support 7.1 channels, or shrink the BD contents to videos with lower bitrate to ensure they are played properly on a slow computer or older media player. Plus, this app adds same advanced encoders like Apple Intermediate Codec, ProRes and DNxHD, allowing you to convert Blu-ray to seamlessly fit iMovie, iDVD, Final Cut Pro X, Avid Media Composer etc.
At the meantime, this multi-track Blu-ray converter can be considered as a user-friendly movie editing tool with the professional functions to trim, crop, merge, insert subtitles, export srt/ass/ssa subtitles, add video effects in the destination movie. Have a try.
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