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The last two movies in this chapter are about how to save space on your hard drive. Because video takes up a lot of space, and as you continue to add footage into iMovie, you might find that your hard drive starts getting full pretty quickly. The first option you have is to store your footage on a second hard drive, or even move existing events to another hard drive. Let's first take a field trip outside of iMovie for a few moments. And out here I'm going to go to the Finder. And I'll go to my home folder, by choosing Go > Home. Inside your home folder, you'll find Movies. And inside Movies you'll find the iMovie library. This is the file that contains all the events, projects and footage in iMovie.
This is not a file you want to mess around with because iMovie organizes your data inside it in a very specific way. Also if you have the previous version of iMovie installed, as I do, you'll see these iMovie events and iMovie projects folders here, too, which we can just ignore since we're working with the new version. But as you add footage to iMovie, this Library file will get larger and larger. If your main hard drive on your Mac is starting to fill up, you'll probably want to move your projects and footage to a different hard drive, because having a full main hard drive can start to drastically slow down your computer. So the key to moving your footage to other hard drives is to create additional iMovie libraries.
I have a couple of other drives installed on my Mac right now. You can see them listed here under Devices. Let's say I want to move my events to the one called Drive A, we currently have a folder called Backup Stuff on there. Let's go back to iMovie and here I'm going to select File > Open Library > New. I'm just going to expand this window here. I'm going to navigate out and find Drive A. Now you can also use any external drive you have connected to your Mac like a USB hard drive or even a thumb drive if it has enough space. Also be sure to give your library a name that you'll recognize. We'll just call this one External Library.
I'll click Save, and now that library appears here in the sidebar of iMovie, and it includes a single empty event named with the current date. So, moving events from my original iMovie library is simply a matter of dragging them to that library. But bear in mind that when you drag, and I'm not letting go here because I don't actually want to make that copy. When you drag, you'll end up with two versions of that event, one in each library. You can then right-click the original one, and choose to move that event to the trash to get rid of it. But if you want to move the event in one step, hold down Cmd as you drag it to the library. Notice I don't see the plus copy icon when I do this because holding down command moves the event instead of copying it, and that's pretty much it.
The space that event took up on my original library is now being freed up. And that's absolutely nothing wrong with having multiple iMovie libraries. You can also collapse libraries if for example, you created a new library just to house projects and events you don't really use anymore, but you want to save. In fact, you can go a step further and right-click a library to close it. Now, that doesn't delete the library or the footage contained in it, it just hides it from the sidebar. If you want to get it back go to File > Open Library, and here you'll find shortcuts to all the recently opened libraries. Or you can choose other here to browse for a library to open. You might want to do that if you're opening up a library file that you maybe got from a friend and never opened in your copy of iMovie before.
So, you won't see a shortcut for it up here. But in this case, I still want to work with the AT running event footage here in my original library, so I'm going to Cmd + drag it back. By the way, if you have a large library, it will take some time to copy that library over. You can keep an eye on its progress with the activity monitor display up here in the upper right-hand corner. And once it disappears, I know my event has been fully copied over. Now if you're done working with the external library, maybe just created one temporarily to help edit a project for a friend and you don't really need it anymore. First, right-click on it to close that library. Then you might want to go up to the File menu to Open Library, and choose Clear Recents to stop it from being listed in that menu.
And lastly, you'll want to go to your external drive, or wherever the library was created. Find that library file and move it to your system trash. And then delete it. That's how to make sure the entire library is gone. All right, so there you have how to move events to other hard drives by creating new iMovie libraries.
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