This script will change the video kind property of the selected tracks to your choice of "Movie", "Music Video" or "TV Show". Additionally, "Show Name", "Season Number", and "Episode Number" can also be set or cleared for each selected track.
Protected files, such as those purchased from the iTunes Store, cannot be changed.
As of iTunes 8, video kind can be set in iTunes' multi-edit screen under the "Options" tab. To increment Episode Number and Episode ID tags see Increment Number Tags.
Select which of the tags to edit one at a time and click the Edit button. When you are satisfied with your entries, press the Done button and the changes will be applied to the selected un-protected video tracks.