Не работает ProgressBar

from PyQt6 import QtCore, QtGui, QtWidgets
from pytube import YouTube
 
 
def download(inp):
    yt = YouTube(inp)
    yt.streams.get_highest_resolution().download()
 
 
class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(540, 214)
        self.pushButton = QtWidgets.QPushButton(Dialog)
        self.pushButton.setGeometry(QtCore.QRect(20, 160, 93, 28))
        self.pushButton.setObjectName("pushButton")
        self.lineEdit_2 = QtWidgets.QLineEdit(Dialog)
        self.lineEdit_2.setGeometry(QtCore.QRect(10, 80, 521, 41))
        font = QtGui.QFont()
        font.setPointSize(11)
        self.lineEdit_2.setFont(font)
        self.lineEdit_2.setStyleSheet("")
        self.lineEdit_2.setInputMask("")
        self.lineEdit_2.setObjectName("lineEdit_2")
        self.label = QtWidgets.QLabel(Dialog)
        self.label.setGeometry(QtCore.QRect(90, 10, 441, 41))
        font = QtGui.QFont()
        font.setPointSize(20)
        self.label.setFont(font)
        self.label.setObjectName("label")
        self.progressBar = QtWidgets.QProgressBar(Dialog)
        self.progressBar.setGeometry(QtCore.QRect(130, 164, 401, 21))
        self.progressBar.setMaximum(100)
        self.progressBar.setProperty("value", 0)
        self.progressBar.setObjectName("progressBar")
        self.pushButton.clicked.connect(lambda: download(self.lineEdit_2.text()))
 
        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)
 
    def retranslateUi(self, Dialog):
        _translate = QtCore.QCoreApplication.translate
        Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
        self.pushButton.setText(_translate("Dialog", "Скачать"))
        self.lineEdit_2.setPlaceholderText(_translate("Dialog", "URL:"))
        self.label.setText(_translate("Dialog", "Скачивание видео с Youtube"))
 
    def progress_func(self, stream, chunk, file_handle, bytes_remaining):
        total_size = stream.filesize
        bytes_downloaded = total_size - bytes_remaining
 
        liveprogress = (int)(bytes_downloaded / total_size * 100)
        self.progressBar.setValue(liveprogress)
 
 
if __name__ == "__main__":
    import sys
 
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_Dialog()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec())