Does anyone know how to add (or change) parental rating tags (such as TV-15, PG and Explicit) to videos?
Preferrably a tool for Windows, but if there is such a procedure available for Macs, I'd like to know as well...

Thanks!

Ps. Mods, if this is in the wrong section, feel free to move it. I wasn't sure where to go...

Yes, but not in iTunes itself. You can edit the metadata for the file in (gasp!) Windows Explorer. Right click on the file for the movie. Go to Properties. On the Details tab, scroll down to the Content section. The first enrty is Parental Rating. Place your cursor to the right column next to Parental Rating and you can see you are able to type. Enter the appropriate rating (G, PG, PG-13, R, NC-17, etc.) and it will appear in iTunes or Windows Media Player. If you like, you also can enter the director, producer, writer and other credits as well.

Originally Posted by PatrickSiska

Yes, but not in iTunes itself. You can edit the metadata for the file in (gasp!) Windows Explorer. Right click on the file for the movie. Go to Properties. On the Details tab, scroll down to the Content section. The first enrty is Parental Rating. Place your cursor to the right column next to Parental Rating and you can see you are able to type. Enter the appropriate rating (G, PG, PG-13, R, NC-17, etc.) and it will appear in iTunes or Windows Media Player. If you like, you also can enter the director, producer, writer and other credits as well.

What about on a mac (Lion)?

You can try this tool, it's sort of nice for this task:

Subler - Google Project Hosting