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 and 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 location for the tagged destination file using the save dialog.
This works also for music files in the iTunes specific formats m4a and m4p. Supported video formats are mp4 and m4v.