Apple

set original_file to get original file of document 1

set posix_file to POSIX path of original_file

set output to current application's NSURL's fileURLWithPath:(posix_file)

set theAsset to current application's AVURLAsset's URLAssetWithURL:output options:(missing value)

set theTrack to (theAsset's tracksWithMediaType:(current application's AVMediaTypeVideo))'s objectAtIndex:0

set FPS to theTrack's nominalFrameRate()

set theSize to theTrack's naturalSize()

set the size_text_wid to theSize's width

set the size_text_ht to theSize's height

display dialog "FPS = " & FPS & "

Width = " & size_text_wid & "

Height = " & size_text_ht

However, when I get to the part where Quicktime saves the file:

tell application id "com.apple.quicktimeplayer"

tell document 1

save self contained in the_new_name

end tell

It throws the exception ”movie contains an incorrect time value”

So the problem seems to be Quicktime. I suppose I should rewrite the whole thing in AVFoundation, but that is daunting

References:
	>Re: Quicktime frame rate calculation error (From: Jim Weisbin <email@hidden>)