from moviepy.editor import ColorClip, concatenate_videoclips

colors = [

(255, 0, 0),     # Red

(0, 0, 255),     # Blue

(0, 255, 0),     # Green

(255, 255, 0)    # Yellow

]

clip_duration = 0.5

num_repeats = int(15 / (clip_duration * len(colors)))

size = (720, 1280)

clips = [ColorClip(size=size, color=color, duration=clip_duration) for color in colors] * num_repeats

final_clip = concatenate_videoclips(clips, method="compose")

final_clip.write_videofile("color_swap_15s.mp4", fps=24)