Source code for moviepy.video.fx.invert_colors

def invert_colors(clip):
    """ Returns the color-inversed clip.

    The values of all pixels are replaced with (255-v) or (1-v) for masks 
    Black becomes white, green becomes purple, etc.
    """
    maxi = (1.0 if clip.ismask else 255)
    return clip.fl_image(lambda f : maxi - f)