docs: def draw_image(self, video_name, image_name, out, start, end, x, y,
                     verbose=False):
          """
          Draws an image over the video
          @param video_name : name of video input file
          @param image_name: name of image input file
          @param out : name of video output file
          @param start : when to start overlay
          @param end : when to end overlay
          @param x : x pos of image
          @param y : y pos of image
          """
          cfilter = (r"[0] [1] overlay=x={x}: y={y}:"
                     "enable='between(t, {start}, {end}')")\
              .format(x=x, y=y, start=start, end=end)
  
          call(['ffmpeg', '-i', video_name, '-i', image_name, '-c:v', 'huffyuv',
                '-y', '-preset', 'veryslow', '-filter_complex', cfilter, out])