Thanks for your suggestions

use VSO convertX for re-author mkv to dvd and is fast ,also with good encoding engine.... but is possible to lose chapter points .. never tried in this way
tachita, ConvertXtoDVD looks great, but at $50 odd, it is a bit pricey. I'm really looking for open source or freeware. I know I'm cheap!
to speed up process can choose bigger target size (to avoid useles compression and thinking that final file / dvd will be burned to hdd and not to optical media)
That is what I want, something to just change the container, not re-encode the whole movie.
He really needs software which re-mux's to DVD, just as MakeMKV re-mux's to MKV. Like all things, something with minimal demand has minimal choice. There are not many options to chose from.
jer1956, you got it! That is exactly what I want. And you are right, I can't find anything suitable that I can get to work.
Do you mean the resultant vobs from converting a mkv file back to vob or vobs from a straight rip from the original dvd? (I presume you are referring to the vobs you get in the Video_TS folder from a straight rip?) The vobs I have direct from original dvds seem to rewind fine.
I assume vobs are vobs no matter where they came from and when people refer to vobs, they imply Video_TS folders are involved - or have I got this all wrong! I am on a steep learning curve here, so please bear with my silly questions!
I need to do some more testing to see which formats rewind nicely - so far I think vobs (and maybe iso) are the only way to go if you want to rewind movies. I generally don't like iso as I have to wade through menus to get the movie playing.
jer1956, I already tried the very promising looking mkv2vob mentioned in that very long running thread a few days ago, but I can't get it to work! Keeps giving me the error: "Unsupported Video Codec MPEG2". Any ideas?
I haven't managed to find an answer yet - I admittedly have not spent a great deal of time trying to work it out yet as this is all very difficult for me to grasp! I will try some more later as this little program seems to be what I am looking for.