Python + OpenCV + Tkinter playing video help

[Hanban]

Hey, all.
So here's my problem:
I need a GUI to get a live webcam stream from openCV (or just open a video file), pass it to the Tkinter GUI window, and add some buttons and stuff to it.
when I run the code and play the video, the video plays with proper FPS (same speed as just opening it with winows media player), however, the video window is small.
It's very important that i get the video to full screen dimentions, perhaps a tad less so I can still see the GUI button.

If i try to resize the video for full screen, by adding 
self.current_image= self.current_image.resize([2560,1440],PIL.Image.ANTIALIAS), my FPS drop and video is playing very slowly.

going with self.root.attributes("-fullscreen",True) , the window just goes full screen but the video size itself is same. so that's no good either.

How can I fill the screen with the video while keeping proper FPS? is it a code error or just slow processing?

here is the code: thanks evryone

import PIL
from PIL import Image, ImageTk
import Tkinter as tk
import argparse
import datetime
import cv2
import os

class Application:
    def __init__(self, output_path = "./"):
        """ Initialize application which uses OpenCV + Tkinter. It displays
            a video stream in a Tkinter window and stores current snapshot on disk """
        self.vs = cv2.VideoCapture('Kaabil Hoon (Kaabil) Hrithik Roshan (2K Ultra HD 1440p)-(HDLoft.Com).mp4') # capture video frames, 0 is your default video camera
        self.output_path = output_path  # store output path
        self.current_image = None  # current image from the camera

        self.root = tk.Tk()  # initialize root window
        self.root.title("PyImageSearch PhotoBooth")  # set window title
        # self.destructor function gets fired when the window is closed
        self.root.protocol('WM_DELETE_WINDOW', self.destructor)
        self.panel = tk.Label(self.root)  # initialize image panel
        self.panel.pack(padx=10, pady=10)
        self.root.config(cursor="arrow")

        # create a button, that when pressed, will take the current frame and save it to file
        btn = tk.Button(self.root, text="Snapshot!", command=self.take_snapshot)
        btn.pack(fill="both", expand=True, padx=10, pady=10)

        # start a self.video_loop that constantly pools the video sensor
        # for the most recently read frame
        self.video_loop()
    

    def video_loop(self):
        """ Get frame from the video stream and show it in Tkinter """
        ok, frame = self.vs.read()  # read frame from video stream
#        frame = cv2.resize(frame, (1500,1000))
        if ok:  # frame captured without any errors
            key = cv2.waitKey(1000)
            cv2image = cv2.cvtColor(frame, cv2.COLOR_BGR2RGBA)  # convert colors from BGR to RGBA
            self.current_image = Image.fromarray(cv2image)  # convert image for PIL
            #self.current_image= self.current_image.resize([1280,1024],PIL.Image.ANTIALIAS)
            imgtk = ImageTk.PhotoImage(image=self.current_image)  # convert image for tkinter 
            self.panel.imgtk = imgtk  # anchor imgtk so it does not be deleted by garbage-collector  
            self.panel.config(image=imgtk)  # show the image
            #self.root.attributes("-fullscreen",True)
        self.root.after(1, self.video_loop)  # call the same function after 30 milliseconds

    def take_snapshot(self):
        """ Take snapshot and save it to the file """
        ts = datetime.datetime.now() # grab the current timestamp
        filename = "{}.jpg".format(ts.strftime("%Y-%m-%d_%H-%M-%S"))  # construct filename
        p = os.path.join(self.output_path, filename)  # construct output path
        self.current_image.save(p, "JPEG")  # save image as jpeg file
        print("[INFO] saved {}".format(filename))

    def destructor(self):
        """ Destroy the root object and release all resources """
        print("[INFO] closing...")
        self.root.destroy()
        self.vs.release()  # release web camera
        cv2.destroyAllWindows()  # it is not mandatory in this application

# construct the argument parse and parse the arguments
ap = argparse.ArgumentParser()
ap.add_argument("-o", "--output", default="./",
    help="path to output directory to store snapshots (default: current folder")
args = vars(ap.parse_args())

# start the app
print("[INFO] starting...")
pba = Application(args["output"])
pba.root.mainloop()

[Joseph_f2]

I could be wrong here, but I think you're attempting to resize the area you are grabbing from the camera. However, you should be stretching the image after grabbing the normal resolution camera feed. Equally, you'd need to increase the Tkinter GUI window size after to make it match. If possible, resize the camera feed image to match the window size variables. Although, you may get aspect ratio problems then, so that'd be the next thing to improve upon.

All the best,

Joseph