Ahhhh I see the problem, so it's not that you don't have the data it's that the new version doesn't want to deal with it the same way.
There used to be a setting (at some point in the past) that you had to set to Widescreen when importing the video but I don't know if that still exists or not. I think I still have my miniDV camera around here somewhere....
... fast forward a little while and I've found it and plugged it in. Strangely none of the old DV tapes appear to be working (they are showing as blank and won't take a recording... The batteries are also so dead they don't even show up as plugged in. They are 12 years old and have spent most of that in a box somewhere. At least it can run from AC power.
In any case, there doesn't appear to be a setting to set the aspect ratio for importing video Although it's also telling me that I can't control the camera from the computer (which I always could before). Maybe these things just aren't supported in modern OSs