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A Digital Cinema Package (DCP) is a collection of digital files used to store and convey digital cinema (DC) audio, image, and data streams. The term was popularized by Digital Cinema Initiatives, LLC in its original recommendation [ 1 ] for packaging DC contents.
The transition from film to digital video was preceded by cinema's transition from analog to digital audio, with the release of the Dolby Digital (AC-3) audio coding standard in 1991. [1] Its main basis is the modified discrete cosine transform (MDCT), a lossy audio compression algorithm. [ 2 ]
The quality the codec can achieve is heavily based on the compression format the codec uses. A codec is not a format, and there may be multiple codecs that implement the same compression specification – for example, MPEG-1 codecs typically do not achieve quality/size ratio comparable to codecs that implement the more modern H.264 specification.
Smaller DAM systems are used in a particular operational context, for instance, in video production systems. The key differentiators between them are the types of input encoders used for creating digital copies of assets to bring them under management, and the output decoders and/or formatters used to make them usable as documents and/or online resources.
As information became increasingly more accessible, the Digital Revolution also facilitated the creation of digital content. [3] Despite an evolution to digital technology, which occurred somewhere between the late 1970s, distribution of digital content did not begin until the late 1990s with the rise in popularity of the Internet. [4] [5]
Electronic programming guide interface in MythTV.. Electronic programming guides (EPGs) and interactive programming guides (IPGs) are menu-based systems that provide users of television, radio, and other media applications with continuously updated menus that display scheduling information for current and upcoming broadcast programming (most commonly, TV listings).
A digital copy is a commercially distributed computer file containing a media product such as a film or music album. The term contrasts this computer file with the physical copy (typically a DVD , Blu-ray , Blu-ray 3D , or Ultra HD Blu-ray disc) with which the digital copy is usually offered as part of a bundle .
There is a trade-off between size and sound quality of lossily compressed files; most formats allow different combinations—e.g., MP3 files may use between 32 (worst), 128 (reasonable) and 320 (best) kilobits per second. [67] There are also royalty-free lossy formats like Vorbis for general music and Speex and Opus used for voice recordings.