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Changing film speed after the fact

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I want to go back and change my frame rate from 30 to 24fps but I've already started my project. Anybody know how I would do this?
 
FritzDaCat

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Need more information. What application are you editing in? Do you have 30fps clips that you want in a 24fps timeline or are you just trying to change project settings?
 
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This is for Imovie. Project already exists in 30fps. I know how to bring in clips and change them but not an edited film.
 
FritzDaCat

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I haven't worked in iMovie for a few years (I use FCP X) but I looked it up. Basically, you can't change it after you have dropped clips into the timeline. iMovie isn't really designed for that kind of control. There are ways around it that involve dropping a 24fps clip into the timeline at the start to establish settings and then dropping 30fps clips after that and retiming them but not when the project is already started.

However, you should be able to change the frame rate when you export it to Quicktime. Instructions here: Scott Andrew | Singer-songwriter guy | How to change the project frame rate in iMovie ’11
 

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