You mean you want to rip a dvd and copy it another dvd, right? Cause that's what I'm thinking when you're saying video TS.
I don't know how to burn a Video TS file on a DVD so it will be readable. However, if you have the DVD you could rip the movie into a file that you would be able to burn on a DVD with iDVD. You could try handbrake. But I read mactheripper is more advised.