We introduce, for the first time, optical flow tracking on 360 footage taking into account the connectedness of the left and right sides of the 360 video, as well as taking into account the geometry of the top and bottom edge pixels.This means that when retiming 360 video that you don't see artifacts along the edges of the video that you might see with previous versions of our products, and with other optical flow-based techniques.
In this example Twixtor is used to slow down the 360 source video by a factor of five. Then a rectilinear projection is used that centers the left/right edges of the retimed 360 video.
More info here: revisionfx.com/products/twixtor
Footage shot by Matt Silverman using a GoPro Fusion