What is the size of the video in it's MP4 form? iMovie may be resizing it to the project settings. This can be bad as it may produce resizing artifacts. I would try to export the video as a custom Quicktime movie with the Apple Intermediate codec. Then play this movie back in the Quicktime player to see if things look fine.
Hey Brad, the MP4 movie in iTunes is 806 MB. The segment I trimmed in QuickTime Player and saved as an MOV file is 18 MB.
When I export the MOV segment from QuickTime Player to my desktop, the export format options that appear are: Movie; 480p; 720p; and iPad, iPhone 4 & Apple TV. Which do you recommend?
When I do Share > Export Using Quicktime in iMovie, there are a bunch of Export and Use options. Which do you recomend?