You cannot simulate clouds from a time laps video, even though you fly at 300 knots you will not see any clouds rotating. The expand and retract but never spin except in vortexes or turbulence. To understand how clouds move, one needs to understand wind, pressure, temperature and dewpoint. I will not conclude knowing either of those, but I do firmly believe you cannot see rotating clouds in the sky Sent from my iPad using Tapatalk