CloneDVD Mobile question

I am trying out CloneDVD Mobile. I am using the generic Divx setting set to 20.
I noticed some files would have audio/video sync issues. Is there something i’m doing wrong? Bad software? Bad codec? Not to sure what is going on.

If you have any suggestions or can help in anyway I would appreciate it. My 3rd day using this forum and i’m loving the response/help. Thank you all!

i’m not sure of the answer, but this would be better in the clonedvd forum, you may get a better responce.