So I googled 360 degree videos.
en.wikipedia.org/wiki/360-degree_video So there's a format but you need a decoder somewhere to allow the viewer to mouse around and for the relevant section of the fisheye image to be rectified. Where's that decoder located? Is it in our computers and the decoding happens after we receive the full file or does our mouse drag signal fly through the www to Vimeo who then just gives us what we need? Pretty impressive.