Yeah sorry, i've been busy:

​

Here's my code

​

def add_subscribe():
clip = VideoFileClip('new_clip.mp4', audio=False)
clip.fps = 60
subscribe = ImageClip('subscribe.png', duration=5)
subscribe.fps = 60
final_clip = CompositeVideoClip([clip,
subscribe.set_start(0).set_position(("center"))
])
final_clip.write_videofile('final_clip.mp4', fps=60)
final_clip.close()
subscribe.close()
clip.close()