Can't Delete Video Files from my Macbook Pro hard drive My Macbook Pro hard drive is full. I have attempted to delete video files from All My Files but they won't delete. I also found that several files with just audio from many of my videos are also there. When I try to move them to the trash, they go to the trash but then another copy is made. How do I permanently delete video and photo files?
Open Finder and go to your Home folder (named after your User Account).
Find the Movies folder.

You can drag it into Finder's Sidebar for convenience.
In the Movies folder, you can delete anything.
Make sure to quit all programs before deleting something, so that the files are not in use. In other words, don't be listening to iTunes or whatever while you're deleting media files.

In some cases, a file may be in use, even if you've quit the relevant app. If this happens, log out and back in, or reboot the computer, then attempt to delete the files.
Be sure to empty the Trash after you delete the files, otherwise the space will not be regained.