Jason (founder of Dragonmount & all-around cool guy) was responsible for making that trailer. Well, he has also filmed a short epic fantasy called Spectre, and he’s doing a kickstarter to raise enough money for postproduction. See the video below:
As with other Kickstarters, there are various pledge levels and cool things you can get for pledging. See the full details on the Kickstarter page. I’ve kicked in some money myself, so give it a look.