how to delete hidden movie files.
Under "Storage" my mac book air says I have 159.91GB of movies. BUT I have about 1 GB of home movies on my computer that I can find (.mp4 files) Where are the others and how can I get rid of them? I'm not very tech savvy and do wonder if I need to go into some store to have this done. Thanks in advance for any help and/or advice.
MacBook Air 13", OS X 10.10