Editing Video (section)

===Analog video===
{{See also|Analog television|Videotape}}
[[File:NTSC Signal.png|thumb|[[NTSC]] [[composite video]] signal (analog)]]
Video developed from facsimile systems developed in the mid-19th century.  Early mechanical video scanners, such as the [[Nipkow disk]], were [[patent]]ed as early as 1884, however, it took several decades before practical video systems could be developed, many decades after [[film]].  Film records using a sequence of miniature photographic images visible to the eye when the film is physically examined. Video, by contrast, encodes images electronically, turning the images into analog or digital electronic signals for transmission or recording.<ref>{{cite web |title=Film Preservation 101: What's the Difference Between a Film and a Video? |date=June 25, 2013 |first=Audrey |last=Amidon |website=The Unwritten Record |publisher=US National Archives |url=https://unwritten-record.blogs.archives.gov/2013/06/25/film-preservation-101-whats-the-difference-between-a-film-and-a-video }}</ref>

Video technology was first developed for [[mechanical television]] systems, which were quickly replaced by [[cathode-ray tube]] (CRT) [[television]] systems. Video was originally exclusively [[Live television|live]] technology. Live video cameras used an electron beam, which would scan a photoconductive plate with the desired image and produce a voltage signal proportional to the brightness in each part of the image. The signal could then be sent to televisions, where another beam would receive and display the image.<ref>{{Cite web |title=Vocademy - Learn for Free - Electronics Technology - Analog Circuits - Analog Television |url=https://vocademy.net/textbooks/AnalogCircuits/Part7/PageSetup.php?CourseDirectory=AnalogCircuits&Page=45&FileName=AnalogTelevision |access-date=2024-06-29 |website=vocademy.net}}</ref> [[Charles Ginsburg]] led an [[Ampex]] research team to develop one of the first practical [[video tape recorder]]s (VTR). In 1951, the first VTR captured live images from [[television camera]]s by writing the camera's electrical signal onto magnetic [[videotape]].

Video recorders were sold for $50,000 in 1956, and videotapes cost US$300 per one-hour reel.<ref>{{cite web |url=http://www.screenonline.org.uk/tv/technology/technology10.html |title=TV Technology 10. Roll VTR |first=Richard |last=Elen |url-status=live |archive-url=https://web.archive.org/web/20111027190500/http://www.screenonline.org.uk/tv/technology/technology10.html |archive-date=October 27, 2011 }}</ref> However, prices gradually dropped over the years; in 1971, Sony began selling [[videocassette recorder]] (VCR) decks and tapes into the [[consumer market]].<ref>{{cite web |url=http://www.rewindmuseum.com/umatic.htm |title=Vintage Umatic VCR – Sony VO-1600. The worlds first VCR. 1971 |access-date=February 21, 2014 |website=Rewind Museum |url-status=live |archive-url=http://archive.wikiwix.com/cache/20140222172720/http://www.rewindmuseum.com/umatic.htm |archive-date=February 22, 2014 }}</ref>