After testing it a bit more I think the problem is not with v0.5 but with the new videos. They appear to have some odd zoom/pov property inside probably (the world looks too big or too small in them) and that hidden property must be leaking into other videos (I am not touching the player settings). It's after watching those videos my old "normal" videos start looking either zoomed in or zoomed out. I suspect it has something to do with POV, not the origin distance. To make my old videos look normal again I have to set POV to 120 or even 90 (only then the frame looks 180 degrees wide again). I will try to find a reliable way to reproduce the issue.
And one more feature idea - when you press that button that shows you a distance to an object in cm, would be useful to also display a protractor sphere type gizmo that shows angles in all directions. This way you can tell if a video that's supposed to be 180 degrees wide is actually appearing as 180 or more like 220/140 degrees, so you can adjust the player settings accordingly.
Thanks.