Using PyQt5 QWebEngineView, I cannot use fullScreen when watching video:
import sys from PyQt5 import QtWidgets, QtGui, QtCore from PyQt5.QtWebEngineWidgets import * app=QtWidgets.QApplication(sys.argv) w=QWebEngineView() w.settings().setAttribute(QWebEngineSettings.PluginsEnabled, True) w.settings().setAttribute(QWebEngineSettings.JavascriptEnabled, True) w.settings().setAttribute(QWebEngineSettings.FullScreenSupportEnabled, True) w.page().fullScreenRequested.connect(QWebEngineFullScreenRequest.accept) w.load(QtCore.QUrl('56.com/w94/play_album-aid-14364505_vid-MTQ3NDUxMjY3.html')) w.showMaximized() app.exec_() 
56.com/w94/play_album-aid-14364505_vid-MTQ3NDUxMjY3.htmlorhttp://www.56.com/w94/play_album-aid-14364505_vid-MTQ3NDUxMjY3.html