If it's for your personal use and you want it edited, I don't think there's a problem with that (it's your video, you own it, you can do what you want with it). However, the site mentions putting the movies in video stores, which is intent to resell (or rent, or otherwise make a profit), which is trickier. They mention a "dealer information packet", but somehow I doubt they have any permission whatsoever from the copyright holders to modify these movies if the intent is to resell them.