Blu-ray in the context of Blue laser

A library is a collection of books, and possibly other materials and media, that is accessible for use by its members and members of allied institutions. Libraries provide physical (hard copies) or digital (soft copies) materials, and may be a physical location, a virtual space, or both. A library's collection normally includes printed materials which can be borrowed, and usually also includes a reference section of publications which may only be utilized inside the premises. Resources such as commercial releases of films, television programmes, other video recordings, radio, music and audio recordings may be available in many formats. These include DVDs, Blu-rays, CDs, cassettes, or other applicable formats such as microform. They may also provide access to information, music or other content held on bibliographic databases. In addition, some libraries offer creation stations for makers which offer access to a 3D printing station with a 3D scanner.

Libraries can vary widely in size and may be organised and maintained by a public body such as a government, an institution (such as a school or museum), a corporation, or a private individual. In addition to providing materials, libraries also provide the services of librarians who are trained experts in finding, selecting, circulating and organising information while interpreting information needs and navigating and analysing large amounts of information with a variety of resources. The area of study is known as library and information science or studies.

Digital cinema is the digital technology used within the film industry to distribute or project motion pictures as opposed to the historical use of reels of motion picture film, such as 35 mm film. Whereas film reels have to be shipped to movie theaters, a digital movie can be distributed to cinemas in a number of ways: over the Internet or dedicated satellite links, or by sending hard drives or optical discs such as Blu-ray discs, then projected using a digital video projector instead of a film projector.

Typically, digital movies are shot using digital movie cameras or in animation transferred from a file and are edited using a non-linear editing system (NLE). The NLE is often a video editing application installed in one or more computers that may be networked to access the original footage from a remote server, share or gain access to computing resources for rendering the final video, and allow several editors to work on the same timeline or project.

Home video is recorded media sold or rented for home viewing. The term originates from the VHS and Betamax era, when the predominant medium was videotapes, but has carried over to optical disc formats such as DVD and Blu-ray. In a different usage, "home video" refers to amateur video recordings, also known as home movies.

Released in 1978, LaserDisc (LD) is another home video format, which never managed to gain widespread use on North American and European retail markets due to high cost of the players and their inability to record TV programs (unlike the VHS), although it retained some popularity among videophiles and film enthusiasts during its lifespan; the format had greater prevalence in some regions of Southeast Asia such as Japan, Hong Kong, Singapore and Malaysia where it was better supported. Film titles were released in LD format until 2001, production of LD players ceased in 2009.

DVD-Video is a consumer video format used to store digital video on DVDs. DVD-Video was the dominant consumer home video format in most of the world in the 2000s. As of 2025, it continues to compete with its high-definition Blu-ray Disc counterpart, while both receive competition as the collective delivery method of physical media by streaming services such as Netflix and Disney+. Discs using the DVD-Video specification require a DVD drive and an MPEG-2 decoder (e.g., a DVD player, or a computer DVD drive with a software DVD player). Commercial DVD movies are encoded using a combination of MPEG-2 compressed video and audio of varying formats (often multi-channel formats as described below). Typically, the data rate for DVD movies ranges from 3 to 9.5 Mbit/s, and the bit rate is usually adaptive. DVD-Video was first available in Japan on October 19, 1996 (with major releases beginning December 20, 1996), followed by a release on March 24, 1997, in the United States.

The DVD-Video specification was created by the DVD Forum and was not publicly available. Certain information in the DVD Format Books is proprietary and confidential and Licensees and Subscribers were required to sign a non-disclosure agreement. The DVD-Video Format Book could be obtained from the DVD Format/Logo Licensing Corporation (DVD FLLC) for a fee of $5,000. FLLC announced in 2024 that "On December 31, 2024, the current DVD Format/Logo License ("License") will expire. On the same date, our Licensing program, which originally started from 2000, will be terminated. There will be no new License program available and thus no License renewal is required."

Consumer electronics, also known as home electronics, are electronic devices intended for everyday household use. Consumer electronics include those used for entertainment, communications, and recreation. Historically, these products were referred to as "black goods" in American English due to many products being housed in black or dark casings. This term is used to distinguish them from "white goods", which are meant for housekeeping tasks, such as washing machines and refrigerators. In British English, they are often called "brown goods" by producers and sellers. Since the 2010s, this distinction has been absent in big box consumer electronics stores, whose inventories include entertainment, communication, and home office devices, as well as home appliances.

Radio broadcasting in the early 20th century brought the first major consumer product, the broadcast receiver. Later products included telephones, televisions, calculators, cameras, video game consoles, mobile phones, personal computers, and MP3 players. In the 2010s, consumer electronics stores often sold GPS, automotive electronics (vehicle audio), video game consoles, electronic musical instruments (e.g., synthesizer keyboards), karaoke machines, digital cameras, and video players (VCRs in the 1980s and 1990s, followed by DVD players and Blu-ray players). Stores also sold smart light fixtures, network devices, camcorders, and smartphones. Some of the modern products being sold include virtual reality goggles, smart home devices that connect to the Internet, streaming devices, and wearable technology.

In computing, an optical disc drive (ODD) is a disc drive that uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of reading or writing data to or from optical discs. Some drives can only read from certain discs, while other drives can both read and record. Those drives are called burners or writers since they physically burn the data onto the discs. Compact discs, DVDs, and Blu-ray discs are common types of optical media which can be read and recorded by such drives.

Although most laptop manufacturers no longer have optical drives bundled with their products, external drives are still available for purchase separately.

A video rental shop/store is a physical retail business that rents home videos such as movies, prerecorded TV shows, video game cartridges/discs and other media content. Typically, a rental shop conducts business with customers under conditions and terms agreed upon in a rental agreement or contract, which may be implied, explicit, or written. Many video rental stores also sell previously viewed movies and/or new, unopened movies.

In the 1980s, video rental stores rented VHS and Betamax tapes of movies; however, most stores dropped Betamax tapes when VHS won the format war late in the decade. In the 2000s, video rental stores began renting DVDs, a digital format with higher resolution than VHS. In the late 2000s, stores began selling and renting Blu-ray discs, a format that supports high definition resolution.

Dolby Digital, originally synonymous with Dolby AC-3 (see below), is the name for a family of audio compression technologies developed by Dolby Laboratories. Called Dolby Stereo Digital until 1995, it uses lossy compression (except for Dolby TrueHD). The first use of Dolby Digital was to provide digital sound in cinemas from 35 mm film prints. It has since also been used for TV broadcast, radio broadcast via satellite, digital video streaming, DVDs, Blu-ray discs and game consoles.

Dolby AC-3 was the original version of the Dolby Digital codec. The basis of the Dolby AC-3 multi-channel audio coding standard is the modified discrete cosine transform (MDCT), a lossy audio compression algorithm. It is a modification of the discrete cosine transform (DCT) algorithm, which was proposed by Nasir Ahmed in 1972 for image compression. The DCT was adapted into the MDCT by J.P. Princen, A.W. Johnson and Alan B. Bradley at the University of Surrey in 1987.

A home cinema, also called home theater, is an audio-visual system that seeks to reproduce a movie theater experience and mood in private homes using consumer grade electronic video and audio equipment for watching home video or streaming.

In the 1980s, home cinemas typically consisted of a movie pre-recorded on a LaserDisc or VHS tape; a LaserDisc Player or VCR; and a large-screen cathode-ray tube TV set, although sometimes CRT projectors were used instead. In the 2000s, technological innovations in sound systems, video player equipment, TV screens and video projectors changed the equipment used in home cinema set-ups and enabled home users to experience a higher-resolution screen image, improved sound quality and components that offer users more options (e.g., many Blu-ray players can also stream movies and TV shows over the Internet using subscription services such as Netflix). The development of Internet-based subscription services means that 2020s-era home theatre users do not have to commute to a video rental store as was common in the 1980s and 1990s.

Anaglyph 3D is the stereoscopic 3D effect achieved by means of encoding each eye's image using filters of different (usually chromatically opposite) colors, typically red and cyan. Anaglyph 3D images contain two differently filtered colored images, one for each eye. When viewed through the "color-coded" "anaglyph glasses", each of the two images is visible to the eye it is intended for, revealing an integrated stereoscopic image. The visual cortex of the brain fuses this into the perception of a three-dimensional scene or composition.

Anaglyph images have seen a recent resurgence due to the presentation of images and video on the Web, Blu-ray Discs, CDs, and even in print. Low cost paper frames or plastic-framed glasses hold accurate color filters that typically, after 2002, make use of all three primary colors. The norm is red and cyan, with red being used for the left channel. The cheaper filter material used in the monochromatic past dictated red and blue for convenience and cost. There is a material improvement of full color images with the cyan filter, especially for accurate skin tones.

A keep case or poly-box is a type of packaging, most commonly used with DVDs and Blu-ray videos (and sometimes CDs).

Besides DVD-Video films, keep cases are very common with most disc-based video games since the PlayStation 2, and they are also found on many PC titles and MP3-CD audiobooks (all use discs that are the same basic dimensions as a DVD).

A boxed set, or box set (American English), is a set of items (for example, a compilation of books, musical recordings, films or television programs) traditionally packaged in a box, hence 'boxed', and offered for sale as a single unit.

Black Hawk Down is a 2001 war film directed and produced by Ridley Scott, and co-produced by Jerry Bruckheimer, from a screenplay by Ken Nolan. It is based on the 1999 eponymous non-fiction book by journalist Mark Bowden, about the crew of a Black Hawk helicopter that was shot down during the Battle of Mogadishu. The film features a large ensemble cast, including Josh Hartnett, Ewan McGregor, Eric Bana, Tom Sizemore, William Fichtner, Jason Isaacs, Sam Shepard, Jeremy Piven, Ioan Gruffudd, Ewen Bremner, Hugh Dancy, and Tom Hardy in his first film role. Orlando Bloom, Ty Burrell, and Nikolaj Coster-Waldau also have minor roles.

Black Hawk Down was produced by Columbia Pictures, Revolution Studios, Jerry Bruckheimer Films and Scott Free Productions and distributed by Sony Pictures Releasing, and had a limited release on December 28, 2001, and went into the public on January 18, 2002. The film received positive reviews from film critics, although it was criticized for inaccuracies. The film performed modestly well at the box office, grossing $173 million worldwide against a production budget of $92 million. Black Hawk Down won two Academy Awards for Best Film Editing and Best Sound at the 74th Academy Awards. In 2006, an extended cut of the film was released on DVD. The cut contains an additional eight minutes of footage, increasing the running time to 152 minutes. This extended cut was released on Blu-ray and in 4K on May 7, 2019.

Reign Over Me is a 2007 American buddy drama film written and directed by Mike Binder, produced by his brother Jack Binder, and starring Adam Sandler, Don Cheadle, Jada Pinkett Smith, Liv Tyler, Donald Sutherland, Saffron Burrows, and Binder himself. The film follows the story of former college roommates and old friends Alan and Charlie, the latter of whom is struggling with depression after the death of his wife and daughters in the September 11 attacks. This was Melinda Dillon's final film role.

Distributed by Columbia Pictures, the film was theatrically released on March 23, 2007, and on DVD and Blu-ray on October 9, 2007. It is the first of two films produced by Madison 23 Productions, a drama subsidiary of Sandler's Happy Madison Productions.

Film distribution, also called film exhibition or film distribution and exhibition, is the process of making a film available for viewing to an audience. This is normally the task of a professional film distributor, who would determine the marketing and release strategy for the film, the media by which a film is to be exhibited or made available for viewing and other matters. The film may be exhibited directly to the public either through a movie theater, physical media (DVD, Blu-ray), digital download/transactional video on demand (VOD) (sale or rental), subscription VOD (e.g. Amazon Prime Video, Apple TV+, Disney+, Netflix) or television programs through broadcast syndication. For commercial projects, film distribution is usually accompanied by film promotion.

Buena Vista Home Entertainment, Inc. (doing business as Walt Disney Studios Home Entertainment) is the home entertainment distribution arm of the Walt Disney Company. The division handles the distribution of Disney's films, television series, and other audiovisual content across digital formats and platforms.

For 37 years, Buena Vista Home Entertainment handled autonomous distribution of those properties in several physical home media formats, such as VHSs, DVDs, Blu-ray discs, and 4K discs under various brand labels around the world. It was founded on February 13, 1987 as Buena Vista Home Video. It was renamed to its current legal name in 1997, although it is currently known in the UK as Walt Disney Studios Home Entertainment (UK & Ireland) since 2013. The division adopted the current Walt Disney Studios-branding in its public name in 2007, but kept the Buena Vista-branding for corporate use.