import sys
from PySide2.QtGui import *
from PySide2.QtCore import *
from PySide2.QtMultimedia import *
from PySide2.QtWidgets import *


class VideoSurface(QAbstractVideoSurface):

    def __init__(self, parent=None):
        super(VideoSurface, self).__init__(parent)
        print("surface init", self.error())

    def present(self, frame):
        print("present()")
        return False

    def start(self, format):
        print("start()")
        image_format = QVideoFrame.imageFormatFromPixelFormat(format.pixelFormat())
        image_size = format.frameSize()

        if image_format != QImage.Format_Invalid and not image_size.isEmpty():

            super(VideoSurface, self).start(format)
            return True

        else:
            return False

    def stop(self):
        print("stop()")
        super(VideoSurface, self).stop()

    def supportedPixelFormats(self, type: QAbstractVideoBuffer.HandleType = ...):
        print("supportedPixelFormats()")
        if type == QAbstractVideoBuffer.NoHandle:
            formats = [
                QVideoFrame.Format_RGB32,
            ]
            return formats
        else:
            return []

    def isFormatSupported(self, format):
        print("isFormatSupported", format)
        return True

@Slot(QMediaPlayer.MediaStatus)
def on_media_player_media_status_changed(status):
    print("player status", status)

@Slot(QMediaPlayer.Error)
def on_media_player_error(error):
    print("player error", error)


if __name__ == "__main__":
    app = QApplication(sys.argv)
    surface = VideoSurface()

    media_player = QMediaPlayer(flags=QMediaPlayer.VideoSurface)
    media_player.mediaStatusChanged.connect(on_media_player_media_status_changed)
    media_player.error.connect(on_media_player_error)

    media_player.setVideoOutput(surface)
    media_player.setMedia(
        QMediaContent(QUrl("http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/VolkswagenGTIReview.mp4")))
    media_player.play()

    err = app.exec_()

    sys.exit(err)