Digital video is an electronic representation of moving visual images (video) in the form of encoded digital data. This is in contrast to analog video, which represents moving visual images in the form of analog signals. Digital video comprises a series of digital images displayed in rapid succession.
Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media. Video was first developed for mechanical television systems, which were quickly replaced by cathode-ray tube (CRT) systems which, in turn, were replaced by flat panel displays of several types.
Kinescope, shortened to kine, also known as telerecording in Britain, is a recording of a television program on motion picture film, directly through a lens focused on the screen of a video monitor. The process was pioneered during the 1940s for the preservation, re-broadcasting and sale of television programmes before the introduction of quadruplex videotape, which from 1956 eventually superseded the use of kinescopes for all of these purposes. Kinescopes were the only practical way to preserve live television broadcasts prior to videotape.
Telecine is the process of transferring film into video and is performed in a color suite. The term is also used to refer to the equipment used in the post-production process. Telecine enables a motion picture, captured originally on film stock, to be viewed with standard video equipment, such as television sets, video cassette recorders (VCR), DVD, Blu-ray Disc or computers. Initially, this allowed television broadcasters to produce programmes using film, usually 16mm stock, but transmit them in the same format, and quality, as other forms of television production. Furthermore, telecine allows film producers, television producers and film distributors working in the film industry to release their productions on video and allows producers to use video production equipment to complete their filmmaking projects. Within the film industry, it is also referred to as a TK, because TC is already used to designate timecode. Motion picture film scanners are similar to telecines.
A camcorder is a self-contained portable electronic device with video and recording as its primary function. It is typically equipped with an articulating screen mounted on the left side, a belt to facilitate holding on the right side, hot-swappable battery facing towards the user, hot-swappable recording media, and an internally contained quiet optical zoom lens.
Quatermass and the Pit is a British television science-fiction serial transmitted live by BBC Television in December 1958 and January 1959. It was the third and last of the BBC's Quatermass serials, although the chief character, Professor Bernard Quatermass, reappeared in a 1979 ITV production called Quatermass. Like its predecessors, Quatermass and the Pit was written by Nigel Kneale.
Nineteen Eighty-Four is a British television adaptation of the 1949 novel of the same name by George Orwell, originally broadcast on BBC Television in December 1954. The production proved to be hugely controversial, with questions asked in Parliament and many viewer complaints over its supposed subversive nature and horrific content. In a 2000 poll of industry experts conducted by the British Film Institute to determine the 100 Greatest British Television Programmes of the 20th century, Nineteen Eighty-Four was ranked in seventy-third position.
Tele-snaps were off-screen photographs of British television broadcasts, taken and sold commercially by John Cura. From 1947 until 1968, Cura ran a business selling the 250,000-plus tele-snaps he took. The photographs were snapped in half of a normal frame of 35mm film, at an exposure of 1/25th of a second. Generally around 70–80 tele-snaps were taken of each programme. They were mostly purchased by actors and directors to use as records and examples of their work before the prevalence of videocassette recorders.
Film look is a process in which video is altered in overall appearance to appear to have been shot on film stock. The process is usually electronic, although filmizing can sometimes occur as an unintentional by-product of some optical techniques, such as telerecording. The effect is the exact opposite of a process called VidFIRE.
Film-out is the process in the computer graphics, video production and filmmaking disciplines of transferring images or animation from videotape or digital files to a traditional film print. Film-out is a broad term that encompasses the conversion of frame rates, color correction, as well as the actual printing, also called scannior recording.
The Tenth Planet is the partly missing second serial of the fourth season in the British science fiction television series Doctor Who, which was first broadcast in four weekly parts from 8 to 29 October 1966. It was William Hartnell's last regular appearance as the First Doctor, and the first story to feature the process later termed regeneration, whereby the lead character, The Doctor, undergoes a transformation into a new physical form. Patrick Troughton makes his first, uncredited appearance as the Second Doctor.
The Doctor Who Restoration Team is a loose collection of Doctor Who fans, many within the television industry, who restore Doctor Who episodes for release on DVD.
Several portions of the long-running British science-fiction television programme Doctor Who are no longer held by the BBC. Between 1967 and 1978 the BBC routinely deleted archive programmes for various practical reasons--lack of space, scarcity of materials, a lack of rebroadcast rights. As a result, 97 of 253 episodes from the programme's first six years are currently missing, primarily from seasons 3, 4 and 5, leaving 26 serials incomplete. Many more were considered lost until recovered from various sources, mostly overseas broadcasters.
The Mind of Evil is the second serial of the eighth season of the British science fiction television series Doctor Who, which was first broadcast in six weekly parts on BBC1 from 30 January to 6 March 1971.
The Apollo 11 missing tapes were those that were recorded from Apollo 11's slow-scan television (SSTV) telecast in its raw format on telemetry data tape at the time of the first Moon landing in 1969 and subsequently lost. The data tapes were used to record all transmitted data for backup.
The Dad's Army missing episodes are lost episodes of the British sitcom programme Dad's Army, plus some short sketches. The programme ran for nine series between 1968 and 1977. Three out of six episodes from Series 2 and two of the four Christmas sketches are missing as the BBC routinely reused videotape as a cost saving measure for many years.
Motion interpolation or motion-compensated frame interpolation (MCFI) is a form of video processing in which intermediate animation frames are generated between existing ones by means of interpolation, in an attempt to make animation more fluid, to compensate for display motion blur, and for fake slow motion effects.
Colour recovery is a process which can restore lost colour to television programmes which were originally transmitted from the colour video tape which the original master was recorded on during final production prior broadcast, but for which only black and white copies remain archived. This should not be confused with colourisation, in which color is artificially added to source material that was always black-and-white, or used to enhance poor-quality original sources. Colour recovery is a newer process and is fundamentally different from colourisation. Most of the work has been done on PAL signals due to the BBC, but the concept is not fundamentally restricted to this system.
Lost television broadcasts are mostly those early television programs which cannot be accounted for in studio archives usually because of deliberate destruction or neglect.
BBC Archives are collections documenting the BBC's broadcasting history, including copies of television and radio broadcasts, internal documents, photographs, online content, sheet music, commercially available music, BBC products, press cuttings, artifacts and historic equipment. The original contents of the collections are permanently retained but are in the process of being digitised. Some collections are being uploaded to the BBC Archives section of the BBC Online website for visitors to view. The archive is one of the largest broadcast archives in the world, with over 15 million items.
