QMediaplayer 无法在无框和半透明背景 PyQt5 上工作

我正在使用 QMediaplayer 制作视频播放器，但它无法在无框和半透明背景窗口上工作。我想制作圆角窗口，所以我需要无框和半透明窗口。 这是我的代码：

from PyQt5.QtCore import Qt, QUrl
from PyQt5.QtMultimedia import QMediaContent, QMediaPlayer
from PyQt5.QtMultimediaWidgets import QVideoWidget
from PyQt5.QtWidgets import QApplication,QMainWindow,QFrame
import sys     
class Player(QMainWindow):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setWindowTitle("PyQt Video Player Widget Example") 
        self.resize(600,400)
        self.frame=QFrame(self)
        self.frame.setStyleSheet('background:grey;border-radius:20px;')
        self.setCentralWidget(self.frame)
        #self.setWindowFlag(Qt.FramelessWindowHint)
        #self.setAttribute(Qt.WA_TranslucentBackground)
        self.mediaPlayer = QMediaPlayer(None, QMediaPlayer.VideoSurface)
        videoWidget = QVideoWidget(self.frame)
        videoWidget.setGeometry(10,10,580,380)
        self.resize(600,400)
        self.mediaPlayer.error.connect(self.handleError)
        self.mediaPlayer.setVideoOutput(videoWidget)
        self.mediaPlayer.setMedia(
                         QMediaContent(QUrl.fromLocalFile("C:/Users/mishra/Desktop/HiddenfilesWindow/10000000_1874628825927192_6229658593205944320_n(1).mp4")))
        self.mediaPlayer.play()
    def handleError(self):
        print("Error: " + self.mediaPlayer.errorString())
          
if __name__ == "__main__":
    import sys
    app = QApplication(sys.argv)
    window = Player()
    
    window.show()
    sys.exit(app.exec_())

设置半透明背景后，它只播放音频而不播放视频。有人知道如何修复它吗？

Try it:

import sys
from PyQt5.QtCore import Qt, QUrl, QRectF
from PyQt5.QtGui import QPainterPath, QRegion
from PyQt5.QtMultimedia import QMediaContent, QMediaPlayer
from PyQt5.QtMultimediaWidgets import QVideoWidget
from PyQt5.QtWidgets import QApplication, QMainWindow, QFrame, QWidget, QHBoxLayout
     

class Player(QMainWindow):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setWindowTitle("PyQt Video Player Widget Example") 
        self.resize(600,400)
        self.frame= QFrame(self)  
        
#        self.frame.setStyleSheet('background:grey; border-radius: 20px;')
        self.setStyleSheet("Player {background: #000;}")                   # +++
        
        self.setCentralWidget(self.frame)
#        self.setWindowFlag(Qt.FramelessWindowHint)
#        self.setAttribute(Qt.WA_TranslucentBackground)

        layout = QHBoxLayout(self.frame)                                   # +++
        videoWidget = QVideoWidget()                                       # +++
        layout.addWidget(videoWidget)                                      # +++

        
        self.mediaPlayer = QMediaPlayer(None, QMediaPlayer.VideoSurface)
#        videoWidget = QVideoWidget(self.frame)             
#        videoWidget.setGeometry(10,10,580,380)
#        self.resize(600,400)
        self.mediaPlayer.error.connect(self.handleError)
        self.mediaPlayer.setVideoOutput(videoWidget)
        self.mediaPlayer.setMedia(
            QMediaContent(QUrl.fromLocalFile("Samonastrojka.avi")))
        self.mediaPlayer.play()

# +++ vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv        
    def resizeEvent(self, event):
        path = QPainterPath()
        path.addRoundedRect(QRectF(self.rect()), 20, 20)
        reg = QRegion(path.toFillPolygon().toPolygon())
        self.setMask(reg)
# +++ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        
    def handleError(self):
        print("Error: " + self.mediaPlayer.errorString())
   
   
if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = Player()
    window.show()
    sys.exit(app.exec_())