1) Please try to play your source DVD or Blu ray movie on Leawo for preview to see if it is OK.
2) If the problem exists when previewing, please click top Settings->Conversion on Leawo. Then change the settings of Enable DVD Navigator to try again.
This FAQ is about: Blu-ray Ripper, Blu-ray to MKV Converter, Blu-ray Video Converter, DVD Ripper, Frequently Asked Questions, Total Media Converter Ultimate, Video Converter Pro, Video Converter Ultimate