Simple Youtube download script

from tkinter import Tk, RIGHT, BOTH, RAISED, Text, TOP, BOTH, X, N, LEFT, StringVar, ANCHOR
from tkinter.ttk import Frame, Button, Style, Label, Entry
from tkinter.filedialog import askopenfile
from tkinter.scrolledtext import ScrolledText
import youtube_dl
import sys
import time
import queue as Queue
import os
import subprocess
import _thread as thread

ydl_opts = {'noplaylist': True, 'format' : r'bestvideo[height<=1080]+bestaudio',
            'merge-output-format':True, 'outtmpl' : r'e:\temp music\videos\%(title)s.%(ext)s'}

queue = Queue.Queue(100)

class StdoutRedirector(object):
    def __init__(self, text_widget):
        self. text_space = text_widget

    def write(self, string):
        self.text_space.insert('end', string)
        self.text_space.see('end')

    def flush(self):
        pass

    def isatty(self):
        pass

class youtube(Frame):

    def __init__(self, parent):
        self.parent = parent
        self.root = parent
        super().__init__()

        self.initUI()

    def initUI(self):

        self.url = StringVar()

        self.master.title("Youtube Downloader")
        self.style = Style()
        self.style.theme_use("default")

        # FRAME
        frame1 = Frame(self)
        frame1.pack(fill=X)

        lbl1 = Label(frame1, text="Url", width=6)
        lbl1.pack(side=LEFT, padx=5, pady=5)

        entry1 = Entry(frame1, textvariable=self.url, width=50)
        entry1.pack(fill=X, padx=5, expand=True)
        entry1.bind('<Enter>', self.clip_paste )

        # FRAME
        #frame2 = Frame(self)
        #frame2.pack(fill=BOTH, expand=True)

        #lbl2 = Label(frame2, text="Output", width=6)
        #lbl2.pack(side=LEFT, padx=2, pady=5)

        #text_box = ScrolledText(frame2,  wrap='word', height = 11, width=50)
        #text_box.pack(side=LEFT, fill=BOTH, expand=True, padx=13)

        # FRAME
        frame3 = Frame(self, relief=RAISED, borderwidth=1)
        frame3.pack(fill=BOTH)

        self.pack(fill=BOTH, expand=True)

        closeButton = Button(self, text="Close", command=self.quit)
        closeButton.pack(side=RIGHT, padx=5, pady=5)
        okButton = Button(self, text="Get File", command=self.call_yt)
        okButton.pack(side=RIGHT)

        #redir = StdoutRedirector(text_box)
        #redirErr = StdoutRedirector(text_box)
        #sys.stdout = redir
        #sys.stderr = redirErr

    def clip_paste(self, event):
        self.url.set(self.clipboard_get())

    def call_yt(self):
        with youtube_dl.YoutubeDL(ydl_opts) as ydl:
            ydl.download([self.url.get()])

        return

def main():

    root = Tk()
                                    # w x h w h
    #root.geometry("550x500+600+300")
    root.geometry("400x80+800+700")
    app = youtube(root)
    root.mainloop()


if __name__ == '__main__':
    main()