Как зациклить видео используя PyQt5, OpenCV и threading

Данный код позволяет выводить на экран трансляцию с нескольких камер или воспроизводить видео используя потоки. Как сделать так, чтоб видео файл проигрывался в бесконечном цикле?

main.py

import cv2, sys, os, threading, time
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtGui import QImage, QPixmap
from TestCamera import Ui_Form


class TestCamera(QtWidgets.QWidget, Ui_Form):
    def __init__(self):
        super(TestCamera, self).__init__()
        self.setupUi(self)
        self.init_camera()

    def init_camera(self):
        "" "Инициализировать мониторинг камеры" ""
        print("Идентификатор процесса:", os.getpid())
        threading.Thread(target=Camera(0, self.Camera1).display).start()
        threading.Thread(target=Camera('путь к нашему видео файлу', self.Camera2).display).start()
#        threading.Thread(target=Camera('rtmp://58.200.131.2:1935/livetv/gdtv', #self.Camera3).display).start()
#        threading.Thread(target=Camera('rtmp://58.200.131.2:1935/livetv/dftv', #self.Camera4).display).start()
#        threading.Thread(target=Camera('rtmp://58.200.131.2:1935/livetv/gxtv', #self.Camera5).display).start()
#        threading.Thread(target=Camera('rtmp://58.200.131.2:1935/livetv/hunantv', #self.Camera6).display).start()


class Camera:
    "" "Объект камеры" ""

    def __init__(self, url, out_label):
        "" "Метод инициализации" ""
        self.url = url
        self.outLabel = out_label

    def display(self):
        """отображать"""
        cap = cv2.VideoCapture(self.url)
        start_time = time.time()
        while cap.isOpened():
            success, frame = cap.read()
            if success:
                if (time.time() - start_time) > 0.1:
                    frame = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
                    img = QImage(frame.data, frame.shape[1], frame.shape[0], QImage.Format_RGB888)
                    self.outLabel.setPixmap(QPixmap.fromImage(img))
                    cv2.waitKey(1)
                    start_time = time.time()


if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    mainWindow = TestCamera()
    mainWindow.show()
    sys.exit(app.exec())

TestCamera.py

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(797, 336)
        self.layoutWidget = QtWidgets.QWidget(Form)
        self.layoutWidget.setGeometry(QtCore.QRect(30, 20, 741, 292))
        self.layoutWidget.setObjectName("layoutWidget")
        self.gridLayout = QtWidgets.QGridLayout(self.layoutWidget)
        self.gridLayout.setContentsMargins(0, 0, 0, 0)
        self.gridLayout.setObjectName("gridLayout")
        self.Camera1 = QtWidgets.QLabel(self.layoutWidget)
        self.Camera1.setMinimumSize(QtCore.QSize(241, 141))
        self.Camera1.setMaximumSize(QtCore.QSize(241, 141))
        self.Camera1.setAutoFillBackground(True)
        self.Camera1.setText("")
        self.Camera1.setScaledContents(True)
        self.Camera1.setObjectName("Camera1")
        self.gridLayout.addWidget(self.Camera1, 0, 0, 1, 1)
        self.Camera2 = QtWidgets.QLabel(self.layoutWidget)
        self.Camera2.setMinimumSize(QtCore.QSize(241, 141))
        self.Camera2.setMaximumSize(QtCore.QSize(241, 141))
        self.Camera2.setAutoFillBackground(True)
        self.Camera2.setText("")
        self.Camera2.setScaledContents(True)
        self.Camera2.setObjectName("Camera2")
        self.gridLayout.addWidget(self.Camera2, 0, 1, 1, 1)
        self.Camera3 = QtWidgets.QLabel(self.layoutWidget)
        self.Camera3.setMinimumSize(QtCore.QSize(241, 141))
        self.Camera3.setMaximumSize(QtCore.QSize(241, 141))
        self.Camera3.setAutoFillBackground(True)
        self.Camera3.setText("")
        self.Camera3.setScaledContents(True)
        self.Camera3.setObjectName("Camera3")
        self.gridLayout.addWidget(self.Camera3, 0, 2, 1, 1)
        self.Camera4 = QtWidgets.QLabel(self.layoutWidget)
        self.Camera4.setMinimumSize(QtCore.QSize(241, 141))
        self.Camera4.setMaximumSize(QtCore.QSize(241, 141))
        self.Camera4.setAutoFillBackground(True)
        self.Camera4.setText("")
        self.Camera4.setScaledContents(True)
        self.Camera4.setObjectName("Camera4")
        self.gridLayout.addWidget(self.Camera4, 1, 0, 1, 1)
        self.Camera5 = QtWidgets.QLabel(self.layoutWidget)
        self.Camera5.setMinimumSize(QtCore.QSize(241, 141))
        self.Camera5.setMaximumSize(QtCore.QSize(241, 141))
        self.Camera5.setAutoFillBackground(True)
        self.Camera5.setText("")
        self.Camera5.setScaledContents(True)
        self.Camera5.setObjectName("Camera5")
        self.gridLayout.addWidget(self.Camera5, 1, 1, 1, 1)
        self.Camera6 = QtWidgets.QLabel(self.layoutWidget)
        self.Camera6.setMinimumSize(QtCore.QSize(241, 141))
        self.Camera6.setMaximumSize(QtCore.QSize(241, 141))
        self.Camera6.setAutoFillBackground(True)
        self.Camera6.setText("")
        self.Camera6.setScaledContents(True)
        self.Camera6.setObjectName("Camera6")
        self.gridLayout.addWidget(self.Camera6, 1, 2, 1, 1)

        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))