Recently I came along the requirement to load a video into a Tkinter window. After some research in the web and experimenting I found the following, working solution (the snippet is just to demonstrate the approach; my used implementation is more complex):
import imageio
from tkinter import Tk, Label
from PIL import ImageTk, Image
from pathlib import Path
video_name = str(Path().absolute()) + '/../background.mp4'
video = imageio.get_reader(video_name)
delay = int(1000 / video.get_meta_data()['fps'])
def stream(label):
try:
image = video.get_next_data()
except:
video.close()
return
label.after(delay, lambda: stream(label))
frame_image = ImageTk.PhotoImage(Image.fromarray(image))
label.config(image=frame_image)
label.image = frame_image
if __name__ == '__main__':
root = Tk()
my_label = Label(root)
my_label.pack()
my_label.after(delay, lambda: stream(my_label))
root.mainloop()
Code language: Python (python)Important to notice is here that Tkinter has his own update mechanism that processes events and updates the application window. Unlike other solutions that use threading (which leads to a flickering result), we use Tkinter’s own after method to register a callback.