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What is the running time per reel?


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I have found several times that no database lists a running time for a movie but they will list the number of reels.


Is there no standard for 35mm movies to convert the number of reels into an approximate running time?


I will appreciate any help on this matter.

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I thank you very much for that information. :)


It is more helpful as the length in feet or meters is available for many movies for which the databases do not list a running time. Knowing that 1,000 feet equals 11 minutes should make conversions easier for me.

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To be more precise, sound film runs (with some oddball exceptions) at 24 frames per second or 90 feet a minute, so a film that runs 7,647 feet would be 85 minutes (84.96 minutes to be precise).


Running times for silent films are tricker because speeds varied trough the years. The standards arrived at in the mid to late 1920s were to photograph at 20 frames per second and to project at 24 frames per second, but in the teens it was common to project at 16 fps, gradually moving up to 20-22 fps in the early 1920s.

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