I have a dvd that has 2 sides to the movie, i.e. flip dvd to view 2nd part of movie.
I ran a program that gives me the dvd file structure for each side (decrypted).
I can load each into cnvertxtodvd 7.0.0.52
How can I merge these 2 to one dvd without a break??
You can use a DVD ripper to rip both sides. WinX DVD ripper (free version),for example.
When ripped, or if you have receipted the movie files, you can use MKVToolNix to merge into one file.