Cannot import files into iPhoto
I have home movie files on an external hard drive that were downloaded there from my old Windows XP computer. They are ".mov", ".mpg", and ".avi" file extensions. When I try to import them into iPhotos on my iMac, running OS X Mavericks, I get a dialog box stating that they cannot be imported. How do I get these movies onto my iMac. Thank you for your help!
iMac, OS X Mavericks (10.9.4)