code: def make_movie(structures, output_filename="movie.mp4", zoom=1.0, fps=20,
                 bitrate="10000k", quality=1, **kwargs):
      
      vis = StructureVis(**kwargs)
      vis.show_help = False
      vis.redraw()
      vis.zoom(zoom)
      sigfig = int(math.floor(math.log10(len(structures))) + 1)
      filename = "image{0:0" + str(sigfig) + "d}.png"
      for i, s in enumerate(structures):
          vis.set_structure(s)
          vis.write_image(filename.format(i), 3)
      filename = "image%0" + str(sigfig) + "d.png"
      args = ["ffmpeg", "-y", "-i", filename,
              "-q:v", str(quality), "-r", str(fps), "-b:v", str(bitrate),
              output_filename]
      subprocess.Popen(args)
docs: Generate a movie from a sequence of structures using vtk and ffmpeg.
  
      Args:
          structures ([Structure]): sequence of structures
          output_filename (str): filename for structure output. defaults to
              movie.mp4
          zoom (float): A zoom to be applied to the visualizer. Defaults to 1.0.
          fps (int): Frames per second for the movie. Defaults to 20.
          bitrate (str): Video bitate.  Defaults to "10000k" (fairly high
              quality).
          quality (int): A quality scale. Defaults to 1.
          \\*\\*kwargs: Any kwargs supported by StructureVis to modify the images
              generated.