Unfortunately, I have to say that Pinnacle is the problem.
I have tried Pinnacle 8, Pinnacle 8.12 and Pinnacle 9.4. None of them are any good.
I am now trying Sonic MyDVD but it doesn't appear to be any better.
I have a DVD Recorder which accepts Analogue and Digital. Haven't tried it for Digital yet but the Analogue recording is fine.