With the latest version of iMovie, it has made the files into a database file and supporting folders. If you want to back it up, just copy the iMovie Library, iMovie Projects and iMovie Events to an external drive. iMovie '11 is the previous version to iMovie 10.0.1.
I have concerns about the new .imovielibrary database file. Right now it's 213GB, and I don't want to have hundreds of copies of it on my Time Capsule backup just because one transition changed deep in the folder structure.
Does Time Machine back up individual files inside the .imovielibrary, or is it a huge lump of ambergris taking up all my valuable backup space?
Message was edited by: Darryl Zurn: Typos
I have the newest MacBook Air, with Mavericks, and the iMovie that came with Mavericks. It's not obvious to me how to copy the iMovie Library, iMovie Projects, and iMovie Events to the external hard drive. The hard drive is not imaged on the iMovie pages, not any of them that I can see, so how do I drag these files to the external hard disk? I have tried to do this through the Share and then File, to copy to the hard drive, but it only takes 3.1 Gb of my 6.2 Gb movie, and then fails to go further. So only half my movie gets backed up. Whaaaaa?
This stumped me, too.
Seems all the tutorials on the web (including Apple's) that explain this process using a previous iteration of iMovie.
After reading this post http://macmost.com/imovie-basics.html, I figured it out.
With iMovie open, choose File>Open Library>New. In the resulting dialog, name your new library file and choose the drive you want it on. Your new library will show up in the sidebar under the original one.
For example, I created a new library on a My Book external drive. This is how it looked in the iMove sidebar. The old library is circled in green; the new in red.
To move a project, select it under the original iMovie Library (not All Events or All Projects). Hold down the command key while dragging the project to your new iMovie Library. If you only want to copy the project, don't hold down the command key when dragging the files.
You can make backups of the imovie data without creating a new library. You can just copy the two iMovie folders in your "Movies"-folder. I wrote a step-by-step guide for german users here: http://www.sir-apfelot.de/wie-kann-ich-backups-von-imovie-projekten-erstellen-20 65/
Hope this is helpful for some readers...
You can't do it from within in the application.
Just go to your Movies folder (an easy way to get there is Home -> Movies) and you'll see a file in there called "iMovie Library"
You can drag that to an external drive and re-name it. It'll probably take a while.
If you need it later, you can access via "Open Library" under File in iMovie, provided you are connected to the drive, of course.
(I have to figure this out every six months or so, so I figured I might as well respond here while I'm at it this time.)