Can I use iMovie to edit a .mov file without altering the aspect ratio? I created a screencast using Snapz Pro X that gets saved in .mov format (H.264, AAC). I want to just cut a few seconds off the end of that file. The only video editor I know of that's installed on my Lion machine is iMovie '11. Can I use iMovie to remove part of the end of the video, but maintain the same dimensions (1146x1057)? 

I tried to import the movie, create a project with just the parts I wanted, and then export via "Share -> Export Movie", but this:


makes the resolution worse
alters the aspect ratio
increases the file size
Open the video file in Quicktime player and then go edit > Trim or command + T and you can trim the video in the editor. 

Save the video and you're good to go.