Create and save a movie - mp4, gif, etc - of the various
    2D slices of a 3D ants image
    
    Try this:
        conda install -c conda-forge ffmpeg

    Example
    -------
    >>> import ants
    >>> mni = ants.image_read(ants.get_data('mni'))
    >>> ants.movie(mni, filename='~/desktop/movie.mp4')

def movie(image, filename=None, writer=None, fps=30):
    """
    Create and save a movie - mp4, gif, etc - of the various
    2D slices of a 3D ants image
    
    Try this:
        conda install -c conda-forge ffmpeg

    Example
    -------
    >>> import ants
    >>> mni = ants.image_read(ants.get_data('mni'))
    >>> ants.movie(mni, filename='~/desktop/movie.mp4')
    """

    image = image.pad_image()
    img_arr = image.numpy()

    minidx = max(0, np.where(image > 0)[0][0] - 5)
    maxidx = max(image.shape[0], np.where(image > 0)[0][-1] + 5)

    # Creare your figure and axes
    fig, ax = plt.subplots(1)

    im = ax.imshow(img_arr[minidx,:,:], animated=True, 
        cmap='Greys_r', vmin=image.quantile(0.05), vmax=image.quantile(0.95))

    ax.axis('off')

    def init():
        fig.axes('off')
        return im,

    def updatefig(frame):
        im.set_array(img_arr[frame,:,:])
        return im,

    ani = animation.FuncAnimation(fig, updatefig, frames=np.arange(minidx,maxidx),
                                  #init_func=init, 
                                  interval=50, blit=True)

    if writer is None:
        writer = animation.FFMpegWriter(fps=fps)

    if filename is not None:
        filename = os.path.expanduser(filename)
        ani.save(filename, writer=writer)
    else:
        plt.show()