Phonon frame snapshot

[xcoder_123]

Hello everybody,

I am able to capture a frame using grabWindow method

QPixmap bilde = QPixmap::grabWindow(videoPlayer->videoWidget()->winId());

How can I use built in phonon snapshot function, all I get is that picture size is 0x0 px.

QImage bilde;
bilde = videoPlayer->videoWidget()->snapshot();

qDebug()<<"Bildes izmers:" << bilde.size();
if (bilde.size().isEmpty())
{
qDebug()<<"Mainigaja bilde, nav datu!";
}
else
{
bool saved = bilde.save("snap.jpg", "JPG", 100);
qDebug() << "Vai saglabaja?" << saved;
}

I want to try VideoWidget::snapshot, because my video feed is 1080x720px, but my videoPlayer widget is 720x480px and I want to capture full sized video frame, with grabWindow method I only can save picture with the same size as the widget.

Is there a method to capture full size video frame with grabWindow method?
Why VideoWidget::snapshot function isn't working?

I'm using kubuntu 11.04 with Qt 4.7.2

Best Regards
Raivis