If you are looking for a simple tool to copy your iTunes-meta-Information from one file to another, then have a closer look at MetaCopy. For example if you recorded a better version of one of your movies of your personal movie database, then you don't want to enter all iTunes informations again. With MetaCopy you simply drag & drop your old movie to the left side and the new one to the right side, press the "Modify"-button, simple as that. Cover arts and information like actors, description, director ect. are copied to your new movie file quickly an easily. if you like, you can select a new file location for the tagged destination file.
MetaCopy works also for music files in the iTunes specific formats m4a and m4p. Supported video formats are mp4 and m4v.