An empty window to cover the subtitle.

cover_subtitle.py

#!/usr/bin/env python2
# -*- coding: utf-8 -*-

import sys

from PyQt4 import QtGui, QtCore


class CoverSubtitle(QtGui.QMainWindow):
    """Use me to cover the subtitle.
    """

    def __init__(self):
        super(CoverSubtitle, self).__init__(
            None, QtCore.Qt.WindowStaysOnTopHint
        )
        self.setGeometry(300, 300, 1200, 100)
        self.setWindowTitle(u"Cover Subtitle")
        self.show()

  
if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    ex = CoverSubtitle()
    sys.exit(app.exec_())