I have a sony DVD hanadycam which writes directly on mini DVD. We bought two mini DVDs of 60 mins. But we bought one mini DVD + RW and one mini DVD - RW Both we formatted in Video mode in handycam before starting shooting. Now we want to combine the contents of these two mini DVDs to single DVD - R(4.7 GB size) , So that we can use mini dvds again. How to do that? We tried giving tow folders directly to DVD burner but it is giving error in reallocation. Please help urgently.