PYTHON

generate gif py

import imageio
with imageio.get_writer('/path/to/movie.gif', mode='I') as writer:
    for filename in filenames:
        image = imageio.imread(filename)
        writer.append_data(image)

python create gif

from moviepy.editor import *

clip = (VideoFileClip("video.mp4")
        .subclip((1,22.65),(1,23.2))
        .resize(0.3))
clip.write_gif("video.gif")

generate gif py

import imageio
images = []
for filename in filenames:
    images.append(imageio.imread(filename))
imageio.mimsave('/path/to/movie.gif', images)