which is ISO file and i tried to uploaded on Ulead dvd workshop
What do you mean by "upload"? Workshop (or any burning software) should be able to
burn a DVD from from an ISO image.
I'm not sure if Workshop can extract the video from an ISO image... You could burn a DVD and then extract the video, but you can't import the menu interaction logic into Workshop. When you import an existing DVD into Workshop, you have to re-create the menus or create a new menu structure.
And, Workshop is
not the best program for importing DVD video. As I recall, it imports the VOB files rather than titles & chapters. this means that long titles get split-up.