MoviePy TryOut

# coding: utf-8

# #MoviePy Demo

# #### Import packages

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import gizeh
from moviepy import editor as movie
import numpy


# #### Define parameters

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width, height = 256, 256   # width, height, in pixels
cx, cy = width/2, height/2 # center in pixels
rmin, rmax = 50, 100       # minimum and maximum radius
Pi = 3.14                  # defining pi
tmax = 2.0                 # duration of the clip, in seconds
freq = numpy.pi * 2 / tmax # pulsation frequency


# #### Function to draw a single frame

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def make_frame(t):

    # width, height
    surface = gizeh.Surface(width, height, bg_color=(0, 0, .3))

    # the diameter varies over time
    d = rmin + (rmax - rmin) * (1 + numpy.sin(t * freq)) / 2

    # the radius varies over time
    r = rmin + (rmax - rmin) * (1 + numpy.sin(t * freq/2)) / 2


    # let's draw something

    circle = gizeh.circle(d/4, xy = (cx, cy), fill=(1, 1, 1))
    circle.draw(surface)
    circle = gizeh.circle(d/5, xy = (cx, cy), fill=(1, 0, 0))
    circle.draw(surface)
    arc = gizeh.arc(r, a1=r*Pi*0.5, a2=r*Pi*0., xy = (cx, cy), stroke=(1,1,1), stroke_width= 15)
    arc.draw(surface)

    # returns a 8-bit RGB array
    return surface.get_npimage()


# #### Create the clip

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clip = movie.VideoClip(make_frame, duration=tmax)


# #### Preview in the browser

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clip.ipython_display(fps=20, autoplay=1, loop=4)


# #### Create an animated GIF

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rm -f "./output/animation.gif"


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mkdir "output"


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#output to the new one
clip.write_gif("./output/animation.gif", fps=20)


# [Download Image](./output/animation.gif)

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