Audio not synced the video

I am using Mac x dvdripper pro. And can’t get the audio to sync with video on my iMac. Please help

We suggest three solutions to your problem. You can choose one to have a try:

  1. Use “safe mode” in the program;
  2. Adjust the “Video Frame Rate”;
    3.Use ‘Back up DVD’’ function (‘Copy’ function enables you to backup your DVD with original video, audio).
    If you still have any problem, please tell me and we are pleased to help you out.