What I used to do was simple - there is one file inside a folder on your DVD-RAM disc, it's called something.VRO - it is about 4GB in size no matter how long the video is - rename the extension so it looks like 'something.MPG' and that's it - you have MPEG 2 video to play with... UNLESS you have done ANY editing on your disc, or recorded more than one title onto the disc. If there are any edits, wierd things happen like loss of audio sync, the crashing of all known video software, etc.
This is how I used to make DVD's of stuff recorded from freeview, because once you have the mpeg you can edit it on your computer and put titles / chapters with Nero.
There must be a better way though - it would be useful if Panasonic gave us the tools to archive our DVD-RAM videos. If anyone knows a better way to work with RAM, I'd be grateful.