I want to step through a .mov file frame-by-frame looking at geometry of an aircraft in the video to establish the rotational speed of the propeller.  This should be fairly straightforwaHow to find the frame exposure time of a variable frame rate mov file

I want to step through a .mov file frame-by-frame looking at geometry of an aircraft in the video to establish the rotational speed of the propeller.  This should be fairly straightforward by looking at how much the propeller moves between each frame and using the exposure time of each frame.
However the .mov file is from an iPhone 4S and looking at the details, has a variable frame rate.  What I need to know is the duration that each frame is displayed for in order to do my analysis.  Does anyone know how to find out this information?

I want to step through a .mov file frame-by-frame looking at geometry of an aircraft in the video to establish the rotational speed of the propeller.  This should be fairly straightforward by looking at how much the propeller moves between each frame and using the exposure time of each frame.
However the .mov file is from an iPhone 4S and looking at the details, has a variable frame rate.  What I need to know is the duration that each frame is displayed for in order to do my analysis.  Does anyone know how to find out this information?

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