phonon does't work fine in debian/kubuntu/ubuntu

[skhaz]

Hi,
I have a application that a video playing and some text's scrolling in
bottom, in windows and fedora works fine...
but on gnu/linux debian/kubuntu/ubuntu the video can't resize

part of code

mediaObject = new MediaObject(this);
videoWidget = new VideoWidget(this);
createPath(mediaObject, videoWidget);
 
connect(mediaObject, SIGNAL(hasVideoChanged(bool)), videoWidget,
SLOT(setVisible(bool)));
 
videoWidget->resize(desktopWidth, desktopHeight-70);
videoWidget->hide();
videoWidget->move(0, 0);
videoWidget->setAspectRatio(VideoWidget::AspectRatioWidget);

mediaObject = new MediaObject(this);
videoWidget = new VideoWidget(this);
createPath(mediaObject, videoWidget);

connect(mediaObject, SIGNAL(hasVideoChanged(bool)), videoWidget,
SLOT(setVisible(bool)));

videoWidget->resize(desktopWidth, desktopHeight-70);
videoWidget->hide();
videoWidget->move(0, 0);
videoWidget->setAspectRatio(VideoWidget::AspectRatioWidget);

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well... I know that this is not bug of the QT.
can anyone help me?