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2. DVD region code - Wikipedia

   en.wikipedia.org/wiki/DVD_region_code

   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 ...

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. 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.

5. 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 ...

6. Regional lockout - Wikipedia

   en.wikipedia.org/wiki/Regional_lockout

   For bypassing region codes, there are software and multi-regional players available. A new form of Blu-ray region coding tests not only the region of the player/player software, but also its country code, repurposing a user setting intended for localization (PSR19) as a new form of regional lockout. This means, for example, while both the US ...

7. Dolby TrueHD - Wikipedia

   en.wikipedia.org/wiki/Dolby_TrueHD

   Dolby TrueHD is an optional codec, which means that Blu-ray hardware may decode it, but also may not (for example, inexpensive or early players, Blu-ray computer software, or pre–Blu-ray AV receivers). Consequently, all Blu-rays that include Dolby TrueHD audio also include a fail-safe track of Dolby Digital (AC-3), a mandatory codec.