QT creator python stream video using opencv - qt

Question

I've been at it from quite some days, searched the docs online but have not been able to find any example :/.
I want to stream video on a page using opencv.Im using QtCreator and on a QtQuick application, that is with qml files.
MediaPlayer {
id: mediaplayer
source: "videoplayback.mp4"
}
VideoOutput {
anchors.fill: parent
source: mediaplayer
}
MouseArea {
id: playArea
anchors.fill: parent
onPressed: mediaplayer.play();
}
Which shows this:
Now i can play the video.
But i rather want the source to be coming from my backend main.py file so i can work upon it.
The main.py file as of now is:
'''
class MainWindow(QObject):
def __init__(self):
QObject.__init__(self)
#QTimer
self.timer = QTimer()
self.timer.timeout.connect(lambda: self.setTime())
self.timer.start(1000)
def setTime(self):
now = datetime.datetime.now()
formatDate = now.strftime("Time: %H:%M:%S %p of %Y/%m/%d")
#print(formatDate)
self.printTime.emit(formatDate)
if __name__ == "__main__":
app = QGuiApplication(sys.argv)
engine = QQmlApplicationEngine()
#Get Context
main = MainWindow()
engine.rootContext().setContextProperty("backend", main)
engine.load(os.fspath(Path(__file__).resolve().parent / "qml/main.qml"))
if not engine.rootObjects():
sys.exit(-1)
sys.exit(app.exec_())
In the above code, basically this line:
engine.rootContext().setContextProperty("backend", main)
Is the one for connection with the qml files using
Connections{
target: backend
function onPrintTime(time){
labelDate.text = time
}
}
So in context i want to ouput video on my page using source as being from opencv. Basically it's a surviellance system app, so i want to show multiple feeds, but if someone could help me with just one from webcam, as in how to stream it to the mediaplayer i'll be really really grateful.
Note: Im working with qml files inside the QT Creator application. There are a number of ways to do this with UI files but that doens't help me :/