If you are going to see #Wildwood this weekend, remember to stay through the credits. I have it on good authority (my own eyes) that there is a button after the credits showing some BTS work.
Seeing how stop motion animation happens doesn't make it seem like any less of a magic trick; if anything it makes it seem like more of a one.
Tens of thousands of hours of work go into every frame. A second of animation can take all day shoot.