Editing The Bridge on the River Kwai (section)

==Restorations and home video releases==
In 1972, the movie was among the first selection of films released on the early [[Cartrivision]] video format, alongside classics such as ''[[The Jazz Singer]]'' and ''[[Sands of Iwo Jima]]''.<ref>{{Cite web|url=https://www.fastcompany.com/3050535/how-cartrivisions-1972-vcr-foresaw-and-forfeited-the-time-shifted-future|title=How Cartrivision's 1972 VCR Foresaw–And Forfeited–The Time-Shifted Future|work=Fast Company |date=21 September 2015|access-date=24 February 2021|archive-date=1 April 2021|archive-url=https://web.archive.org/web/20210401172159/https://www.fastcompany.com/3050535/how-cartrivisions-1972-vcr-foresaw-and-forfeited-the-time-shifted-future|url-status=live}}</ref>

The film was restored in 1985 by Columbia Pictures. The separate dialogue, music and effects were located and remixed with newly recorded "atmospheric" sound effects.<ref name=DavidLean.com>{{cite web|title=The Bridge on the River Kwai|url=http://www.davidlean.com/Filmography/Credits/kwai_credits.html|publisher=DavidLean.com|url-status=dead|archive-url=https://web.archive.org/web/20090129133902/http://davidlean.com/Filmography/Credits/kwai_credits.html|archive-date=2009-01-29}}</ref> The image was restored by OCS, Freeze Frame, and Pixel Magic with George Hively editing.<ref>{{cite web|title=The Bridge on the River Kwai Credits|url=http://ftvdb.bfi.org.uk/sift/title/27691?view=credit|archive-url=https://web.archive.org/web/20080926142700/http://ftvdb.bfi.org.uk/sift/title/27691?view=credit|url-status=dead|archive-date=2008-09-26|publisher=BFI Film and TV Database}}</ref>

On 2 November 2010 Columbia Pictures released a newly restored ''The Bridge on the River Kwai'' for the first time on Blu-ray. According to Columbia Pictures, they followed an all-new 4K digital restoration from the original negative with newly restored 5.1 audio.<ref>{{cite web |url=http://bridgeontheriverkwaibd.com/ |title=Movies &#124; Disc & Digital &#124; Sony Pictures |publisher=Bridgeontheriverkwaibd.com |access-date=2014-05-16 |archive-date=12 August 2011 |archive-url=https://web.archive.org/web/20110812212220/http://bridgeontheriverkwaibd.com/ |url-status=dead }}</ref> The original negative for the feature was scanned at 4K (four times the resolution in High Definition), and the colour correction and digital restoration were also completed at 4K. The negative itself manifested many of the kinds of issues one would expect from a film of this vintage: torn frames, embedded emulsion dirt, scratches through every reel, colour fading. Unique to this film, in some ways, were other issues related to poorly made optical dissolves, the original camera lens and a malfunctioning camera. These problems resulted in a number of anomalies that were very difficult to correct, like a ghosting effect in many scenes that resembles colour mis-registration, and a tick-like effect with the image jumping or jerking side-to-side. These issues, running throughout the film, were addressed to a lesser extent on various previous DVD releases of the film and might not have been so obvious in standard definition.<ref>[http://www.sonypictures.com/homevideo/columbiaclassics/in-production/] {{webarchive|url=https://web.archive.org/web/20101115082557/http://www.sonypictures.com/homevideo/columbiaclassics/in-production/|date=15 November 2010}}</ref>