Can't Get MediaCoder Working

I downloaded the latest version of Mediacoder to try, and this program won’t run. There are no instructions on how to use it, but I did manage to load a clip, set video filtering and output folder. When I click Start transcode, the status sidebar appears to the side, but no activity happens atferwards. Task manager shows no cpu usage whatsoever. I left it alone for 90 mins, hoping that it was analizing or something, but nothing. :confused:

I created some homemade dvds that turned out too dark, and wanted to increase the brightness, and Googling turned this up along with VituralDub. But V-Dub created file sizes way too big, filling up all empty space (50gb) left on the hdd.
So, how do you make this thing…go? :sad: