This visual effect is the result of applying the complex map f(z) = z^2 to the frames of a spherical video (together with some standard video editing trickery to clone out a copy of me, the book and the laptop). The raw footage for this video, from before the transformation, is at https://www.youtube.com/watch?v=xuvBsX_rgnQ See https://web.archive.org/web/20190830014315/http://elevr.com/spherical-video-editing-effects-with-mobius-transformations/ for a closely related topic, including how to map spherical images onto the complex plane.