Question: I am making a videoplayer with QMediaplayer but it wont work on frameless and translucent background window.I want to make a round corner windows so i need frameless and translucent window. Here is my code: 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_())  After setting translucent background it only plays audio not video.Anybody knows how to fix it?

Answer: 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_())