pyguymer3.geo.buffer()
pyguymer3.geo.fillin()
pyguymer3.geo.find_middle_of_locs()
pyguymer3.geo.great_circle()
pyguymer3.geo.add_map_underlay()
pyguymer3.image.save_array_as_image()
optimise_MP4()
“mp4file” does modify, and it does touch, the MP4 even if it cannot optimise it, therefore it is NOT safe to keep on running “mp4file” on the same MP4 over and over again.