Need to read a finaIised mini DVD-RW in VR mode.

I have a DVD-RW disc finalised in VR mode, on my Sony DCR DVD 803E camcorder. The disc will play on the camcorder but cannot be read by any software including the Picture Package which came with the Sony. Is there a way to unfinalise the disc so it can be read by other software?. Is there some software that will read a finalised DVD-RW in VR mode? I haver tried Picture Package, Isobuster, REcovery Toolbox for CD, Imovie. I want to recover 30 minutes of family memories to an editable and viewable media