When making an iMovie, you may
sometimes want to download an actual movie for sharing rather than
upload your movie to YouTube, iTunes or Vimeo. If you do want a file,
iMovie allows you Share your file to *.mp4.
First, select the Share button when you have completed your iMovie.
The Share menu has several options. Select File.
Next
you will need to designate a Size or Quality to your movie. If you
have a really high quality film with lots of detailed graphics you may
want to select a High Definition size like 720p. Typical shared video
files use the Standard Definition size of 480p.
The
location of the downloaded file is completely up to you. If you want
to easily share the file with others without using email or a sharing
service like YouTube, I would recommend saving to Google Drive where you
can select the users that you want to have access to your file.