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Digital rights management (DRM) is the management of legal access to digital content. Various tools or technological protection measures (TPM), [1] such as access control technologies, can restrict the use of proprietary hardware and copyrighted works. [2]
The restrictions imposed by FairPlay, mainly limited device compatibility, have sparked criticism, with a lawsuit alleging antitrust violation that was eventually closed in Apple's favor, and various successful efforts to remove the DRM protection from files, with Apple continually updating its software to counteract such projects.
Unauthorized reproduction of M4V files may be prevented using Apple's FairPlay copy protection. A FairPlay-protected M4V file can only be played on a computer authorized (using iTunes) with the account that was used to purchase the video. [1] In QuickTime, M4V videos using FairPlay DRM are identified as "AVC0 Media".
Apple's iPhone supports AAC and FairPlay protected AAC files formerly used as the default encoding format in the iTunes Store until the removal of DRM restrictions in March 2009. Android 2.3 [67] and later supports AAC-LC, HE-AAC and HE-AAC v2 in MP4 or M4A containers along with several other audio formats. Android 3.1 and later supports raw ...
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CD/DVD copy protection is a blanket term for various methods of copy protection for CDs and DVDs. Such methods include DRM, CD-checks, Dummy Files, illegal tables of contents, over-sizing or over-burning the CD, physical errors and bad sectors. Many protection schemes rely on breaking compliance with CD and DVD standards, leading to playback ...
Neither issue was particularly relevant when the CD standard was introduced in the early 1980s, and thus, unlike the more recent DVDs, the CD standard specifies no inherent form of copy protection or other digital rights management. Copy Control is one of a number of attempts to apply copy protection on top of the CD standard, but since it is ...
DTCP has also been referred to as "5C" content protection, a reference to the five companies that created DTCP; Hitachi, Intel, Matsushita, Sony, and Toshiba. The standard was originally proposed in February 1998, when the five companies presented the system to the Copy Protection Technical Working Group (CPTWG), an ad hoc body organized to ...