Greetings kcsk10,
Welcome to the Apple Support Communities!
I understand that you would like to sync movies from your computer to your iPad but are having some difficulty. In your situation, there are two different articles that I would suggest reading over.
First, for information syncing content from your computer to your iOS device, please follow the instructions in the attached article below.
iTunes: Videos may be unable to sync to iPhone, iPad, or iPod - Apple Support
You also mentioned that your movies are in a few different formats. Some of these formats may not be compatible with your iOS device. For information on converting and playing this content for use on your iOS device, please read over then next attached article.
iTunes: Videos may be unable to sync to iPhone, iPad, or iPod - Apple Support
Cheers,
Joe