Welcome to the forum Video Collector.

How did you make those screen grabs out of interest? The reason I ask is that they appear to be half-height grabs scaled up using a simple point resize (which is why there is heavy aliasing on diagonal lines). I suspect that one of the fields - half the resolution - got discarded somehow when you made your screen grabs. This would mean that the actual tapes contain twice the vertical resolution of your screenshots!

Very much looking forward to seeing these.