iPod video files will not import to i tunes

im trying to put a film onto my itunes so that i can sync it to my i pod but it wont let me import the file. Every time i click on import it dose'nt do anythink is there any other way i can put the film on my itunes to sync to my ipod

the files is just a norm quicktime movie file ive tryed clicking and dragging it into the movie folder but ive had no luck so far