My Macbook Air is showing 75 GB of movies but I don't have any movies

Thanks to all...in summary, the main issue is having iPhoto AND photos. If you have to photo libraries of "similar" size -Solution summary: make back up copy of iPhoto library (I saved my to iCloud), then delete. There should be a full duplicate copy of all photos in your photos library.

The movies folder is not where iTunes movies are stored. They are stored under the Music > iTunes ... folder. (I could be more explicit, but I am not because you should not go there to delete the movies.)

What you should do is go to the Movies tab in iTunes and delete the movie(s) from there. If you need them again, you can download them as you would a previous purchase. (I assume you purchased these movies from the iTunes Store).

OK, here's where to look:

Music > iTunes > iTunes Music > Movies

Is that folder empty?

That is the result of a Spotlight search. If you search "This Mac" for "Kind is Movie," you should see all the movies in your home folder. The only reason why you might not see some is that they're in another user's home folder, or somewhere else not directly accessible to you.

Empty the Trash if you haven't already done so. If you use iPhoto, empty its internal Trash first:

iPhoto ▹ Empty Trash

Use a tool such as OmniDiskSweeper (ODS) to explore your volume and find out what's taking up the space. You can also delete files with it, but don't do that unless you're sure that you know what you're deleting and that all data is safely backed up. That means you have multiple backups, not just one.

Deleting files inside an iPhoto or Aperture library will corrupt the library. Any changes to a photo library must be made from within the application that created it. The same goes for Mail files.

Proceed further only if the problem isn't solved by the above steps.

ODS can't see the whole filesystem when you run it just by double-clicking; it only sees files that you have permission to read. To see everything, you have to run it as root.

Back up all data now.

If you have more than one user account, make sure you're logged in as an administrator. The administrator account is the one that was created automatically when you first set up the computer.

Install ODS in the Applications folder as usual. Quit it if it's running.

Triple-click anywhere in the line of text below on this page to select it, then copy the selected text to the Clipboard by pressing the key combination command-C:

sudo /Applications/OmniDiskSweeper.app/Contents/MacOS/OmniDiskSweeper

Launch the Terminal application in any of the following ways:

☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.

Paste into the Terminal window (command-V). You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.

The application window will open, eventually showing all files in all folders. It may take a few minutes for ODS to list all the files.

I don't recommend that you make a habit of doing this. Don't delete anything while running ODS as root. If something needs to be deleted, make sure you know what it is and how it got there, and then delete it by other, safer, means. When in doubt, leave it alone or ask for guidance.

When you're done with ODS, quit it and also quit Terminal.

Does that mean you couldn't do what I suggested, or that you did it and didn't find what you were looking for?

The instructions are not intended to change anything. They're intended to help you find out what's taking up space on your volume. If you followed them, you could not possibly have missed anything. When ODS is running as root, it shows you all files.

It's possible, though not likely, that a corrupt Spotlight index is giving misleading results. Rebuild the Spotlight index. If you try to search now from the magnifying-glass icon in the top right corner of the display, there will be an indication that indexing is in progress.

Go to Finder

-Applications

-Right click iTunes

-Click on 'Show Package Contents'

-Then, go to the search bar within this folder a type in 'Movies' or 'TV Shows' (whatever you believe is taking up the "movie" storage

-From this point you can either move the entire 'movie' or 'tv show' folder to the trash of select specific items within the folder to move to the trash

Once you move the items you wish to the trash, this will free up space on your computer!

I was having the same problem. For me, the "movies" were in Photos.

Open Photos, in the File menu, click Show Recently Deleted.

If you're sure you want to empty that trash, the Delete All button is in the top right.

That freed up 50 gigs for me. Hope it helps you.