Lighting On Video

Hello everyone. People have said that the teaser trailer that I made was a little to dark to see what was going on and they couldn't watch it. Well I have tried getting around this issue by making another video but it just came out really dark again. I don't know why Sony Vegas is causing the back lighting after render but what I can say is, don't worry the game isn't that dark so don't take the video as a reference and take this image instead:

http://www.moddb.com/games/forsaken-soul/images/increased-flashlight-range#imagebox

Thanks for reading and I hope that you understand where I'm coming from.