Problem with artwork on burned DVD's

I copy a DVD into itunes. I then import the artwork for the DVD. When I view it in Itunes, or on my Apple TV the artwork is just fine. When I move the file to my iPad Air, instead of the artwork from the Movie/TV show it uses a random album cover from my itunes music library. The file play just fine but the artwork for it is messed up. Any thought on how to correct this?