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2. DVD region code - Wikipedia

   en.wikipedia.org/wiki/DVD_region_code

   DVD region codes are a digital rights management technique introduced in 1997. [1] It is designed to allow rights holders to control the international distribution of a DVD release, including its content, release date, and price, all according to the appropriate region. This is achieved by way of region-locked DVD players, which will play back ...

3. Blu-ray - Wikipedia

   en.wikipedia.org/wiki/Blu-Ray

   Unlike DVD region codes, Blu-ray region codes are verified only by the player software, not by the optical drive's firmware. As of 2017 the latest types of Blu-ray players, suitable for Ultra HD Blu-ray content, are not region-free, but Ultra HD Blu-ray disc manufacturers have not yet locked the discs to any region and they work worldwide.

4. Advanced Access Content System - Wikipedia

   en.wikipedia.org/wiki/Advanced_Access_Content_System

   AACS uses cryptography to control and restrict the use of digital media. It encrypts content under one or more title keys using the Advanced Encryption Standard (AES). Title keys are decrypted using a combination of a media key (encoded in a Media Key Block) and the Volume ID of the media (e.g., a physical serial number embedded on a pre-recorded disc).

5. List of Blu-ray player manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_Blu-ray_player...

   Comparison of high definition optical disc formats. Digital rights management. HD DVD. HD NVD. High definition optical disc format war. Optical disc. PlayStation 3. PlayStation 4. Xbox One.

6. AACS encryption key controversy - Wikipedia

   en.wikipedia.org/wiki/AACS_encryption_key...

   AACS encryption key controversy. Internet users began circulating versions of this image, calling it the Free Speech Flag, in blog posts on dozens of websites and as user avatars on forums such as Digg. The first fifteen bytes of the 09 F9 key are contained in the RGB encoding of the five colors, with each color providing three bytes of the key ...

7. PowerDVD - Wikipedia

   en.wikipedia.org/wiki/PowerDVD

   PowerDVD is a media player software for Microsoft Windows created by CyberLink, for DVD movie discs, Blu-ray movie discs, and digital video files, photos and music.. PowerDVD is offered in various versions, which vary greatly in terms of functionality, and can be expanded to include additional functions such as playback of licensed audio formats or power-saving functions for use on notebooks ...