First of all Pinnacle is awful.It almost destroys your PC.Crashes etc.
Does your PC playback your files in full?
Why not forget the software?
Check to see if your video card has a 'TV OUT' socket on.
Utilise this by plugging in the cable which should have been supplied with the card,and put the other end into a skart lead adaptor to plug into a TV dvd recorder,or VHS recorder.