id like to join vob files from an amateur dvd that is not fully authored, so then i can do some author. im running a hackintosh and found dvision for mac. reencoding would have no sense to me, so my doubt here is this app encodes when joinin VOBs?

think reading that reencoding would mean extra time in the process.
a 95 min dvd9 quality wit a core2quad & 4 gb ram & xfx 8600 GT card would mean more than 10-15 min in that process? think thats what it takes for this joinin.

i need some advise, since sharing a degraded dvd on the net is not what i intent.