When sound was integrated, the analogue audio track, which runs along the side of the film, reduced the visual width to around 1.2:1. Several other formats were used, but often were restricted to use by one studio and quickly died out as the Great Depression took its toll on the national economy.Īlthough several formats were available, most silent films were made in a 1.33:1 aspect ratio where each frame of film used four film perforations per frame with a very thin line between frames. 20th Century Fox news segments in 19 were filmed with the 70mm Grandeur Film setup (a predecessor of Todd-AO).The idea of putting three projectors together will eventually become the basis for Cinerama. Abel Gance's Napoléon (1927) was shown in what was dubbed "polyvision" with an AR of 4:1 (3 1.33:1 projectors side by side).Other films were shown in a wide array of aspect ratios. Not only was it the longest film up to that time at roughly 100 minutes long, it was filmed on 63mm film in a 1.66:1 AR. The first known event to be filmed in an aspect ratio wider than 1.33:1 is the Corbett-Fitzsimmons boxing match in Carson City, Nevada in 1897. This will likely change now that 16:9 is the new standard for TV and computer monitors. The accepted standard for "widescreen" is any device or piece of content where the visual portion has an aspect ratio wider than 1.33:1 or 1.37:1. A movie with an AR of 2.35:1 has a visual width that is 2.35 times wider than it's height. The same rule applies to movies or any visual content. Modern TVs have an AR of 16:9 (or 1.77:1) where the width is 1.77 times the height. The aspect ratio of televisions from the 1960s until the early 2010s was 4:3 (or 1.33:1). For exmaple, for a film with an AR of 1.33:1 the width of each visual frame is 1.33 times the height. An aspect ratio (AR) is the ratio of the width vs.
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