I ripped movie last night using Handbrake and preset Apple TV 3, and the video file looks great, same quality as the DVD, however, the sound is lower than original DVD and in many places it's hard to hear what they are saying on the video. Solution?
Set the DRC setting to 1. It might help. It will help even out sounds so the change in volume isn't so drastic. It may not be louder, but more even. There is also a gain control in that menu as well.