I have being using DvD shrink to copy dvd

What i want to know is how do you copy 2 Movies on a dvd-5 with dvd shrink (1)do you copy one & then analyse the other or do you analyse both & then copy at the end

If you analyse the first one would the second one erase the first when you try to analyse it

My best guess would be, that you would rip the first one into the default directory, then when that was done, move it to another directory. Then rip the other one into the now empty default directory. When it was done, put them together and burn. I believe the menus would be screwed up and it might not be playable in your home dvd player. This is just an opinion though. Maybe someone has a better idea? If not good luck, hope it works for you!