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2. 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.

3. DVD region code - Wikipedia

   en.wikipedia.org/wiki/DVD_region_code

   DVD regions. 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 ...

4. 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 ...

5. List of Blu-ray player manufacturers - Wikipedia

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

   CBHD Based on HD DVD format. 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.

6. HD DVD - Wikipedia

   en.wikipedia.org/wiki/HD_DVD

   HD DVD (short for High Density Digital Versatile Disc) is an obsolete high-density optical disc format for storing data and playback of high-definition video. Supported principally by Toshiba, HD DVD was envisioned to be the successor to the standard DVD format, but lost to Blu-ray, supported by Sony and others.

7. Advanced Access Content System - Wikipedia

   en.wikipedia.org/wiki/Advanced_Access_Content_System

   Advanced Access Content System. AACS decryption process. The Advanced Access Content System ( AACS) is a standard for content distribution and digital rights management, intended to restrict access to and copying of the post- DVD generation of optical discs. The specification was publicly released in April 2005.