Zoom-in Effect for Moviepy. This function makes the zoom effect smoother.

moviepy-zoom-in-effect.py

import moviepy.editor as mp
import math
from PIL import Image
import numpy


def zoom_in_effect(clip, zoom_ratio=0.04):
    def effect(get_frame, t):
        img = Image.fromarray(get_frame(t))
        base_size = img.size

        new_size = [
            math.ceil(img.size[0] * (1 + (zoom_ratio * t))),
            math.ceil(img.size[1] * (1 + (zoom_ratio * t)))
        ]

        # The new dimensions must be even.
        new_size[0] = new_size[0] + (new_size[0] % 2)
        new_size[1] = new_size[1] + (new_size[1] % 2)

        img = img.resize(new_size, Image.LANCZOS)

        x = math.ceil((new_size[0] - base_size[0]) / 2)
        y = math.ceil((new_size[1] - base_size[1]) / 2)

        img = img.crop([
            x, y, new_size[0] - x, new_size[1] - y
        ]).resize(base_size, Image.LANCZOS)

        result = numpy.array(img)
        img.close()

        return result

    return clip.fl(effect)


size = (1920, 1080)

images = [
    'https://www.colorado.edu/cumuseum/sites/default/files/styles/widescreen/public/slider/coachwhip2_1.jpg',
    'https://www.colorado.edu/cumuseum/sites/default/files/styles/widescreen/public/slider/green2_1.jpg',
    'https://www.colorado.edu/cumuseum/sites/default/files/styles/widescreen/public/slider/westterrgarter_1.jpg',
    'https://www.colorado.edu/cumuseum/sites/default/files/styles/widescreen/public/slider/prairierattle4.jpg'
]

slides = []
for n, url in enumerate(images):
    slides.append(
        mp.ImageClip(url).set_fps(25).set_duration(5).resize(size)
    )

    slides[n] = zoom_in_effect(slides[n], 0.04)


video = mp.concatenate_videoclips(slides)
video.write_videofile('zoomin.mp4')

Thanks for the code, best way to zoom I have found.

This is a 10/10

Thanks you, this is perfect working

Thankyou!

Not really doing anything for me. Is this just for images or also for videoclips?

Not really doing anything for me. Is this just for images or also for videoclips?

It only works for images as far as I can see. I guess you would have to get the individual frames as images and feed them in instead.

much thanks, keep the heat up. and do so for a video too