Playing stream with QMediaPlayer app not responding - c++

Question

I using visual studio 2019 qt5.12.3
I use ffmpeg.exe to stream my pc screen and show it inside my app.
Its playing the video stream but if my stream down or stop and ill try to
lets say i start ffmpeg.exe and i can see my screen in my app, then ill kill the ffmpeg.exe and try to delete or reload new url its will crush or stuck
delete QMediaPlayer;
or
QMediaPlayer->deleteLater();
and not even
QMediaPlayer->setMedia();
working if the stream stop
its will crush the app or nor respond.
this is my code to play the stream
void Stream::LoadStream() {
QUrl StreamUrl = QUrl("https://example.com:2083/live/stream.flv");
vWidget = new QVideoWidget(this);
vWidget->setObjectName("vWidget");
vPlayer = new QMediaPlayer(this, QMediaPlayer::StreamPlayback);
vPlayer->setObjectName("vPlayer");
vPlayer->setVideoOutput(vWidget);
vPlayer->setMedia(StreamUrl);
vPlayer->play();
vWidget->show();
}
void Stream::StopStream() {
vWidget->deleteLater();
//vPlayer->setPosition(0); //tried but not helped
vPlayer->stop();
vPlayer->deleteLater(); // this crush the app if StreamUrl stoped streaming ..
delete vPlayer; // this crush the app if StreamUrl stoped streaming ..
}
void Stream::ChangeUrl(QString Url) {
vPlayer->setMedia(QUrl(Url););
}
how i can delete or remove the player ?