Music Videos into Imovie for Itunes for Apple TV

Any help would be greatly appreciated.

I am creating a library of Music Videos to use in my Apple tv. My goal is to play them at parties in my house instead of just music playing.

I have been buying a few videos out of itunes, but I do also have Music DVDs which I would like to import and save into separate videos and save them into my itunes /music as "media kind" Music Video, that way I could create a Playlist and have them play randomly.

My Problem, I tried importing my first dvd video using Handbrake which I save into a m4v file, and then I was going to use Imovie to create separate videos and export them as mpg4. However the file that Handbrake created is not being detected by Imovie, so I can't import it.

This is the first time I am using Handbreak and I have not idea how to use it, so I choose one of the preselected options. I do not even know if this is the best way to do what i want but maybe someone could give me an idea.

Any help will be greatly appreciated .

Thanks