I get the general drift . Whenever the log shows debug line with funny characters the Software has issues with media stream continuity and a bad rip is suspected. Unfortunately this happens equally with BBC Musicals/ Shows like the RSPC Shakespeare collection or J Lo Concert and Bollywood. In future I will log specific DVD to illuminate this issue.
What is surprising that I do not detect any issues playing them or transcoding them to AVI using other tools like COWON JET AUDIO