No it is not a ripped commercial movie as it has not been released commercially - otherwise I'd have bought it (but I would still try to add the credit titles to it that seem to have gone lost in the film originals that remain). It is a HD TV broadcast.
The NVIDIA driver is on a OEM videocard GeForce GT230 that came as an "out of the box" media-pc that seems to have no update (as far as I could find sofar). GT230 is unknown to NVIDIA at least.
Re-installing might be a temporary solution but who guarantees that the same event won't happen again? You cannot keep reinstalling repeatedly to be taken seriously.
I could extract the movie from its mkv file as mt2s file (which is the only thing inside the mkv file) and see if it makes a difference. I was already pleasantly surprised that PD9 did recognize mkv. Unfortunately not my SD or HD .trp files from the satellite receiver. But that's another topic.