如何在 QMediaPlayer 中旋转视频？

Question

from PyQt5 import QtMultimedia, QtMultimediaWidgets
from PyQt5.QtCore import QDir, Qt, QUrl, QSizeF
from PyQt5.QtMultimedia import QMediaContent, QMediaPlayer, QMediaPlaylist
from PyQt5.QtMultimediaWidgets import QVideoWidget, QGraphicsVideoItem
from PyQt5.QtWidgets import (QApplication, QFileDialog, QHBoxLayout, QLabel,
                             QPushButton, QSizePolicy, QSlider, QStyle, QVBoxLayout, QWidget, QStackedWidget,
                             QStackedLayout, QGraphicsView, QGraphicsScene)
from PyQt5.QtWidgets import QMainWindow,QWidget, QPushButton, QAction
from PyQt5.QtGui import QIcon
import sys, glob

class VerySimpleMediaPlayer(QWidget):
    def __init__(self, parent):
        super().__init__(parent)
        self.media_player = QtMultimedia.QMediaPlayer(self)
        self.media_widget = QtMultimediaWidgets.QVideoWidget(self)
        self.media_player.setVideoOutput(self.media_widget)
        self.media_widget.show()
        self.media_player.setMedia(QMediaContent(QUrl.fromLocalFile('avideo.mp4')))
        self.media_player.mediaStatusChanged.connect(self.look)
        layout = QVBoxLayout()
        self.real = QStackedWidget()
        self.button = QPushButton()
        self.button.setText('Push Me PLS!')
        self.real.addWidget(self.button)
        self.button.clicked.connect(self.clicked)
        self.real.addWidget(self.media_widget)
        layout.addWidget(self.real)
        self.setLayout(layout)
        self.awidget = QWidget()
        bx = QVBoxLayout()
        lbl = QLabel()
        lbl.setText('Video Has Finished!')
        bx.addWidget(lbl)
        self.awidget.setLayout(bx)
        self.real.addWidget(self.awidget)
    def clicked(self):
        self.media_player.play()
        self.real.setCurrentIndex(self.real.currentIndex() + 1)
    def look(self, state):
        if state == 7:
            self.real.setCurrentIndex(self.real.currentIndex() + 1)


app = QApplication(sys.argv)
player = QMainWindow()
player.setCentralWidget(VerySimpleMediaPlayer(player))
player.show()
sys.exit(app.exec_())

它运作良好，但唯一的问题是即使视频是 800 x 1600 之类的垂直视频，视频也会水平播放。

有没有办法自动或非自动旋转视频？