CPRM, shorthand of Content Protection for Recordable Media, may be unfamiliar to you at first mention, but actually you may know it very well in practical cases:
1. I have a disc from Japan that I really want to be able to view. It was burned on a DVD apparently from a Sharp DVD Recorder. However, when I try to play it in VLC or any other program it is just green and pixellated. - Chopmeister
2. I cannot copy the .VRO file from the disc to computer, when I try, I get a message 'Cannot copy VR_MOVIE: Access is denied. Make sure the disk is not full or write-protected and that file is not currently in use.' - Mattse
These issues are caused by the CPRM protection, namely DVDs are encrypted with a machine specific code, which means the DVD can only be played back on the original PVR/DVR and cannot be copied at random. In other words, only you get over the DVD-RW CPRM compatible problem with a superb DVD CPRM decrypter, can you remove and copy CPRM-protected DVD on Mac and Windows computers.
Table of Contents
Part 1: What is Cinavia Protection
An eligible CPRM DVD decrypter is the key. Compared with the unsatisfactory behavior that CPRM DVDFab HD decrypter only removes CPRM-encryption from DVD-RW on ASUS BC-1205PT rather than LITE-ON or Optiarc DVD-RW, MacX DVD Ripper Pro (Windows version) is precisely the best fit CPRM decrypter Mac to rip protected DVDs by CRPM scramble system. Besides, the latest update version of this best DVD decrypter not only accepts the CPRM DVD discs ripping greatly like the Japanese .VRO DVD files, AV DVDs, but also equips with some salient features:
- Unique DVD analysis tech to remove any DVD copy protections, such as CPRM, Playlist Obfuscation, CSS, Region Code, Sony ARccOS, Disney DRM, Cinavia, etc.
- Rip protected DVD to MP4, MOV, AVI, MKV, H.264, MP3 and all mainstream Apple Android Microsoft Sony devices.
- 4 DVD copy modes to 1:1 clone DVD to iSO image for burning, copy main title/full title movie to MPEG2, backup DVD to MKV with video/audio subtitles reserved.
- High-quality engine, multi-core CPU and hyper-threading tech ensures world's fastest speed (5 minutes only) and lossless quality.
- It is seamlessly compatible with the latest OS, including Windows 10 and macOS Big Sur.
Part 2: How to Decrypt CPRM Protected DVD with the Best CPRM Decrypter
Step 1: Get the CPRM decrypter Mac download and launch it. If you're running on Windows PCs, download windows version as well. Then insert the DVD into your disc drive and click the "DVD Disc" to load the data. DVD Folder or ISO image is also supported.
Step 2: Choose the output format or devices for the CPRM encrypted DVD. The output options range from DVD to iTunes, iMovie, MP4, MOV to iPhone, iPad, Samsung, HTC, Chromecast, PS4, and more.
Step 3: Choose the output folder to save the converted .VRO files and then start ripping and decrypting protected DVDs after you click RUN button.
Disclaimer: The software company only advocate using this DVD ripper to copy and rip CPRM DVD or other copy protected DVDs under the concept of Fair Use and don't encourage any illegal reproduction or distribution of copyrighted content. Please abide by the local DVD copyright law before doing it.
Part 3: Something Else About CPRM
Having said all of the above, you may be still confused with CPRM. Here we'd like to give you a general comprehending about what's CPRM and why CPRM protected DVD cannot be played on non-CPRM DVD players.
What is CPRM?
Content Protection for Recordable Media (CPRM) is a mechanism for controlling the copying, moving and deletion of digital media on a host device, such as a personal computer, or other digital player. It's already used in specific removable media, and is now being proposed for inclusion in the ATA specification, for hard drives and recordable DVD discs, including DVD-R, DVD+R, DVD-RW, and DVD+RW discs. It is a form of digital rights management (DRM) developed by The 4C Entity, LLC (consisting of IBM, Intel, Matsushita and Toshiba).
Why CPRM DVD Won't Play on Standalone DVD Players?
CPRM compliant means that the recorder will respond to the copy flag embedded in the incoming source by CGMS(Copy Generation Management System). When a CPRM-compliant recorder detects compatible media, it uses the unique Media ID on the disc to encrypt the data it records to the disc. The recorder will also write a block of data called the Media Key Block (MKB) which is used to decrypt the disc.
If the disc is copied, the Media ID on the new disc will be different and the recorded data will not decrypt correctly. BTW, the CGMS can be divided into three types:
- Copy-Always: No content protection for DVD so that you can still record and copy such content as you want.
- Copy-Once: Some cable programs are broadcast with embedded "Copy Once" flag and can be recorded on either HDD, DVD-RAM or DVD-RW in VR mode, but not on DVD-R. In other words, you can record them with CPRM-compatible DVD recorders, but will be disabled to re-record or copy them.
- Copy-Never: most commercial DVD movies apply in "Copy Never" embedded in addition to Macrovision, and that's why standalone DVD recorders cannot copy commercial DVDs.
Bella has been working with DVD digitization for over 12 years. She writes articles about everything related to DVD, from disc drive, DVD copyright protection, physical structure, burning and backup tips. The unceasing passion of DVD movies helps her build a rich DVD library and ensure a practical solution to address almost all possible DVD issues. Bella is also a crazy fan for Apple products.
