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Probably easiest solution is a 360 video camera since YT allows you to view them... but not sure how good of quality/distortions.

Check out zip nerf which seems to do exactly that https://jonbarron.info/zipnerf/

looks amazing, my naive take is ML is a brute force way to do something, not guaranteed to be correct but close enough

on the other hand, I'd be curious how much worse a procedural way to do frame by frame analysis would be

You can already go on zillow and see 3d walk through by jumping from one spherical panorama to another. They even make 3d models out of it.

I cynically think it wouldn't be a killer, because real estate agents prefer to have photos carefully made with fish-eye lens that makes rooms look bigger.