How to draw button or widget upon QWidget using python-MPV on windows?

Question

I use this library https://github.com/jaseg/python-mpv and PySide6 to embed MPV in container (QWidget) in python. I want to draw the button (or something else maybe qlabel for example?) over QWidget (embedded mpv) on top of player but how can I do that? I tried to draw button but when mpv starts playing player overrides the button with itself. How to place button on top of player?

Update:

I read here that I should use opengl as render api.:https://github.com/mpv-player/mpv-examples/blob/master/libmpv/README.md

How can I use opengl along with pyside6 (or pyqt5) and mpv to render properly?

My code there:

import os

from PySide6 import QtWidgets


os.environ['PATH'] += os.path.dirname(__file__) #you need to place mpv-2.dll (or mpv-1.dll) in folder with project
import mpv
import sys

from PySide6.QtWidgets import *
from PySide6.QtCore import *

class Ui_Form(object):
    def setupUi(self, Form):
        if not Form.objectName():
            Form.setObjectName(u"Form")
        Form.resize(780, 477)
        self.pushButton = QPushButton(Form)
        self.pushButton.setObjectName(u"pushButton")
        self.pushButton.setGeometry(QRect(30, 430, 75, 24))

        self.retranslateUi(Form)

        QMetaObject.connectSlotsByName(Form)
    # setupUi

    def retranslateUi(self, Form):
        Form.setWindowTitle(QCoreApplication.translate("Form", u"Form", None))
        self.pushButton.setText(QCoreApplication.translate("Form", u"PushButton", None))
    # retranslateUi

class PlayerWidget(QtWidgets.QWidget, Ui_Form):
    def __init__(self, parent=None):
        super(PlayerWidget, self).__init__(parent)
        self.setupUi(self)
        self.retranslateUi(self)


class Test(QMainWindow):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.container = PlayerWidget()
        self.setCentralWidget(self.container)
        self.container.setAttribute(Qt.WA_DontCreateNativeAncestors)
        self.container.setAttribute(Qt.WA_NativeWindow)
        player = mpv.MPV(wid=str(int(self.container.winId())),
                vo='gpu',
                log_handler=print,
                loglevel='debug', ytdl=True)
        player.play('test.mp4')  # place your test video in folder
app = QApplication(sys.argv)

# This is necessary since PyQT stomps over the locale settings needed by libmpv.
# This needs to happen after importing PyQT before creating the first mpv.MPV instance.
import locale
locale.setlocale(locale.LC_NUMERIC, 'C')
win = Test()
win.show()
win.resize(1280, 720)
sys.exit(app.exec_())