qasync will cause crash when construct QMediaPlayer in Coroutine

[lovexuan]

code example:

import asyncio
import qasync
from PySide6 import QtWidgets, QtMultimedia, QtMultimediaWidgets
app = QtWidgets.QApplication([])
loop = qasync.QEventLoop(app)
asyncio.set_event_loop(loop)
class VideoItemWidget(QtWidgets.QWidget):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setLayout(QtWidgets.QVBoxLayout())
        asyncio.ensure_future(self.init())
    async def init(self):
        self.player = QtMultimedia.QMediaPlayer()
        self.player.setLoops(QtMultimedia.QMediaPlayer.Loops.Infinite)
        self.player.setSource('XXX.mp4')
        self.preview_widget = QtMultimediaWidgets.QVideoWidget()
        self.preview_widget.setMinimumSize(800, 600)
        self.player.setVideoOutput(self.preview_widget)
        self.layout().addWidget(self.preview_widget)
        self.player.mediaStatusChanged.connect(self.play)
    def play(self):
        self.player.play()
w = VideoItemWidget()
w.show()
loop.run_forever()

This code is work on native PySide6

from PySide6 import QtWidgets, QtMultimedia, QtMultimediaWidgets
class VideoItemWidget(QtWidgets.QWidget):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.player = QtMultimedia.QMediaPlayer()
        self.player.setLoops(QtMultimedia.QMediaPlayer.Loops.Infinite)
        self.player.setSource('XXX.mp4')
        self.preview_widget = QtMultimediaWidgets.QVideoWidget()
        self.preview_widget.setMinimumSize(800, 600)
        self.player.setVideoOutput(self.preview_widget)
        self.setLayout(QtWidgets.QVBoxLayout())
        self.layout().addWidget(self.preview_widget)
        self.player.mediaStatusChanged.connect(self.play)
    def play(self):
        self.player.play()
app = QtWidgets.QApplication([])
w = VideoItemWidget()
w.show()
app.exec()

I want to construct it in Coroutine because I have a lot of video to preview, so I want use async/await to optimize user experience

[hosaka]

Cannot reproduce, works ok using windows, python3.11 and pyside6.5.2. Can you be more specific about your environment and versions perhaps?

[lovexuan]

Cannot reproduce, works ok using windows, python3.11 and pyside6.5.2. Can you be more specific about your environment and versions perhaps?

Sorry for reply late.

I'm using MacBook Pro (M1 32GB), macOS Ventura 13.5.2, PySide6.4.2, python 3.9.13.

And yes, when I find a Windows machine with PySdie6.4.2 & python 3.9.13, it works fine. So I guess this bug related to system platform.

20231130-155426.mp4