Pro Tools forum for topics specifically related to Pro Tools 9 software, including tips, tricks, troubleshooting, and general discussions.
What version of protools are you running? Are your sample rate settings set correctly for both quicktime and protools bounce? Is there an actual consistent offset or does it drift? There are some reported issues with protools 10.2. Make sure your video and audio selection are the same as well as selecting the entire video file when bouncing.