Using Y2M will generate two files in movie folder, about.jpg and folder.jpg.
about.jpg is backdrop-art with synopsis ect, and folder.jpg is just simply movie cover-art.
While browsing using Media Library, folder.jpg will show up in every movie folder, pressing SLOW/A-B button in the remote will reveal about.jpg
Y2M only need internet connection to get movie info, Mede8er only need those two files (Y2M will generate them)
I suggest you to read manual, here in my footer