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VidFIRE (Video Field Interpolation Restoration Effect) is a restoration technique intended to restore the video-like motion of footage originally shot with television cameras now existing only in formats with telerecording as their basis. The word is both a noun and a verb. (In a sense it is the exact opposite of filmizing which makes video look like film.〔http://www.yourdictionary.com/filmize definition #2 Retrieved September 23, 2015〕) == Background == Film recorded for the purposes of United Kingdom television production is usually recorded at 25 frames per second; there is an unrecorded temporal gap between each frame and the next. In contrast, video pictures are recorded as a stream of video fields. Each field can be loosely seen as half a frame, but each field is also a discrete image separated from the previous field by 1/50 second. This difference in the rate of change of the image is one of the factors contributing to the "video look", familiar to viewers as the more immediate, "live" feel seen in many soap operas and sports programmes. When videotape technology was first created, in the 1950s, tapes were extremely costly; but their reusability meant that the cost of a single tape could be spread across several productions, with each successive production erasing and then reusing the tape from a previous one, with the result that relatively few programmes produced on videotape in the 1950s and 1960s still exist in their original format. The expense of videotape and the various mutually incompatible television standards around the world made it impractical at the time for programme makers to sell their productions to foreign broadcasters in their original video form. Film, however, was considered a universal medium, and most broadcasters had the facility to broadcast from it. Before the development of practical video tape, programme makers such as the BBC developed the technology to record programmes—either live or for prerecording—from specially adapted monitors with a film camera. The resulting film recordings are called ''telerecordings'' in the UK and ''kinescopes'' in the United States. Programmes often were copied in this way for rebroadcast or overseas sale before the original videotapes were reused. Most live- and videotape-originated television from this era exists today only as film recordings. However, the film recording system "locks" two video fields, previously separated by 1/50 second, into a single film frame. When the film is played back, the original video-like motion is lost. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「VidFIRE」の詳細全文を読む スポンサード リンク
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