[PyQt] Problem with a widget [PyQt5]

[Nikola Tesla]

/Hey, how are you? I hope you're well.
my problem is that I'm trying to add the class
video = QVideoWidget()
in this widget --> self.video_container = QWidget(self.box_video)
but I haven't been able to work it out... please help
I have attached the code file to make my question more understandable/

/
/

/This is so that the uploaded video can be displayed in that widget/

/This widget is illustrated in the attached image/

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# -*- coding: utf-8 -*-

from PyQt5.QtGui import QFont, QCursor, QIcon, QPixmap

from PyQt5.QtCore import Qt, QSize, QUrl

from PyQt5.QtWidgets import QWidget, QListWidget, QFrame, QGridLayout, QSlider, QLabel, QPushButton, QApplication, QMainWindow, QAbstractItemView, QGroupBox, QHBoxLayout, QFileDialog

from PyQt5.QtMultimedia import QMediaPlayer, QMediaContent

from PyQt5.QtMultimediaWidgets import QVideoWidget 

import sys

import imagenes

class Catarsis(QMainWindow):

    def __init__(self):
        super().__init__()

        self.setWindowTitle("    Catarsis")
        self.setWindowIcon(QIcon('img/vector.jpg'))
        self.setObjectName("Catarsis")
        self.resize(814, 600)

        font = QFont()
        font.setFamily("Cascadia Code PL")
        font.setPointSize(16)
        self.setFont(font)

        self.artilugios()
        self.show()

    def artilugios(self):

        self.contenedor = QWidget(self)
        self.contenedor.setObjectName("contenedor")
        self.grid_1 = QGridLayout(self.contenedor)
        self.grid_1.setObjectName("grid_1")

        self.box_controles = QGroupBox(self.contenedor)
        self.box_controles.setMaximumSize(QSize(16777215, 122))
        self.box_controles.setObjectName("box_controles")
        self.gridLayout_2 = QGridLayout(self.box_controles)
        self.gridLayout_2.setObjectName("gridLayout_2")
        self.reproducir = QPushButton(self.box_controles)
        self.reproducir.setMaximumSize(QSize(50, 109))
        self.reproducir.setText("")

        icon = QIcon()
        icon.addPixmap(QPixmap(":/img/play.svg"), QIcon.Normal, QIcon.Off)

        self.reproducir.setIcon(icon)
        self.reproducir.setIconSize(QSize(48, 29))
        self.reproducir.setEnabled(False)
        self.reproducir.setFlat(True)
        self.reproducir.setObjectName("reproducir")
        self.reproducir.clicked.connect(self.play_video)

        self.gridLayout_2.addWidget(self.reproducir, 0, 0, 1, 1)
        self.parar = QPushButton(self.box_controles)
        self.parar.setMaximumSize(QSize(50, 109))
        self.parar.setText("")

        icon1 = QIcon()
        icon1.addPixmap(QPixmap(":/img/stop.svg"), QIcon.Normal, QIcon.Off)

        self.parar.setIcon(icon1)
        self.parar.setIconSize(QSize(48, 29))
        self.parar.setFlat(True)
        self.parar.setObjectName("parar")

        self.gridLayout_2.addWidget(self.parar, 0, 1, 1, 1)
        self.atras = QPushButton(self.box_controles)
        self.atras.setMaximumSize(QSize(50, 109))
        self.atras.setText("")

        icon2 = QIcon()
        icon2.addPixmap(QPixmap(":/img/back.svg"), QIcon.Normal, QIcon.Off)

        self.atras.setIcon(icon2)
        self.atras.setIconSize(QSize(48, 29))
        self.atras.setFlat(True)
        self.atras.setObjectName("atras")

        self.gridLayout_2.addWidget(self.atras, 0, 2, 1, 1)
        self.adelante = QPushButton(self.box_controles)
        self.adelante.setMaximumSize(QSize(50, 109))
        self.adelante.setText("")

        icon3 = QIcon()
        icon3.addPixmap(QPixmap(":/img/next.svg"), QIcon.Normal, QIcon.Off)

        self.adelante.setIcon(icon3)
        self.adelante.setIconSize(QSize(48, 29))
        self.adelante.setFlat(True)
        self.adelante.setObjectName("adelante")

        self.gridLayout_2.addWidget(self.adelante, 0, 3, 1, 1)
        self.cargar = QPushButton(self.box_controles)
        self.cargar.setMaximumSize(QSize(50, 109))
        self.cargar.clicked.connect(self.abrir_archivo)
        self.cargar.setText("")

        icon4 = QIcon()
        icon4.addPixmap(QPixmap(":/img/eject-1.svg"), QIcon.Normal, QIcon.Off)

        self.cargar.setIcon(icon4)
        self.cargar.setIconSize(QSize(48, 29))
        self.cargar.setFlat(True)
        self.cargar.setObjectName("cargar")

        self.gridLayout_2.addWidget(self.cargar, 0, 4, 1, 1)
        self.datos = QLabel(self.box_controles)
        self.datos.setFrameShape(QFrame.StyledPanel)
        self.datos.setIndent(13)
        self.datos.setObjectName("datos")

        self.gridLayout_2.addWidget(self.datos, 0, 5, 1, 1)
        self.menu = QPushButton(self.box_controles)
        self.menu.setMaximumSize(QSize(50, 109))
        self.menu.setText("")

        icon5 = QIcon()
        icon5.addPixmap(QPixmap(":/img/menu2.png"), QIcon.Normal, QIcon.Off)

        self.menu.setIcon(icon5)
        self.menu.setIconSize(QSize(48, 29))
        self.menu.setFlat(True)
        self.menu.setObjectName("menu")

        self.gridLayout_2.addWidget(self.menu, 0, 6, 1, 1)
        self.horizontalLayout = QHBoxLayout()
        self.horizontalLayout.setObjectName("horizontalLayout")

        self.tiempo = QSlider(self.box_controles)
        self.tiempo.setOrientation(Qt.Horizontal)
        self.tiempo.setObjectName("tiempo")

        self.horizontalLayout.addWidget(self.tiempo)
        self.logo_volumen = QPushButton(self.box_controles)
        self.logo_volumen.setMaximumSize(QSize(41, 41))
        self.logo_volumen.setText("")

        icon6 = QIcon()
        icon6.addPixmap(QPixmap(":/img/altavoz3.png"), QIcon.Normal, QIcon.Off)

        self.logo_volumen.setIcon(icon6)
        self.logo_volumen.setIconSize(QSize(25, 25))
        self.logo_volumen.setFlat(True)
        self.logo_volumen.setObjectName("logo_volumen")

        self.horizontalLayout.addWidget(self.logo_volumen)
        self.volumen = QSlider(self.box_controles)
        self.volumen.setMaximumSize(QSize(139, 16777215))
        self.volumen.setPageStep(1)
        self.volumen.setOrientation(Qt.Horizontal)
        self.volumen.setObjectName("volumen")
        self.horizontalLayout.addWidget(self.volumen)

        self.gridLayout_2.addLayout(self.horizontalLayout, 1, 0, 1, 7)
        self.grid_1.addWidget(self.box_controles, 0, 0, 1, 1)

        self.box_video = QGroupBox(self.contenedor)
        self.box_video.setAlignment(Qt.AlignLeading|Qt.AlignLeft|Qt.AlignVCenter)
        self.box_video.setFlat(False)
        self.box_video.setObjectName("box_video")

        self.gridLayout = QGridLayout(self.box_video)
        self.gridLayout.setObjectName("gridLayout")

        self.video_contenedor = QWidget(self.box_video)
        self.video_contenedor.setObjectName("video_contenedor")
        self.gridLayout.addWidget(self.video_contenedor, 0, 0, 1, 1)

        self.lista = QListWidget(self.box_video)
        self.lista.setMaximumSize(QSize(270, 16777215))
        self.lista.setObjectName("lista")
        self.gridLayout.addWidget(self.lista, 0, 1, 1, 1)
        self.grid_1.addWidget(self.box_video, 1, 0, 1, 1)

        self.media = QMediaPlayer(None, QMediaPlayer.VideoSurface)
        video = QVideoWidget()

        self.media.setVideoOutput(video)

        self.setCentralWidget(self.contenedor)

        self.box_controles.setTitle("Controles")
        self.datos.setText("TextLabel")
        self.box_video.setTitle("Catarsis Reproductor")

    def abrir_archivo(self):
        nombre_archivo, _ = QFileDialog.getOpenFileName(self, '   Abrir Video !!!', '', 'mp3 Audio (*.mp3);mp4 Video (*.mp4);Movie files (*.mov);All files (*.*)')

        if nombre_archivo != '':
            self.media.setMedia(QMediaContent(QUrl.fromLocalFile(nombre_archivo)))
            self.reproducir.setEnabled(True)

    def play_video(self):
        if self.media.state() == QMediaPlayer.PlayingState:
            self.media.pause()
        else:
            self.media.play()



if __name__ == "__main__":

    player = QApplication(sys.argv)
    # ['windowsvista', 'Windows', 'Fusion'] Posibles estilos en Windows 10
    player.setStyle('Fusion')
    ct = Catarsis()
    sys.exit(player.exec())