I think you are confused c6. Handbrake creates mkv or mp4 files from dvd's or other source files. It has nothing to do with creating dvd's. I use convertX myself and it works dern good. DvdStyler is free but I tried to use it and it didn't give me good feedback and so I canceled the job. ConvertX (~40euro) is the only one I know of that just plain works, providing you are not using a (huge) 10gb mkv to start with (which in itself would not need converting at all-lol).
As for burning a video_ts folder or iso, imgburn will do it for free. I use ONES myself. It's simpler.