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Unable to play video using Phonon::VideoPlayer

 Hi all ,

I am writing a qt app to play video using phonon,  on DM 8148 - EZSDK

here is a snippet of the code i have

----------------------------------------- 

    Phonon::VideoPlayer* m_player = new Phonon::VideoPlayer(Phonon::VideoCategory, &mainWindow);

    m_player->load(Phonon::MediaSource(argv[1]));

    m_player->setMinimumSize(400,300);

    qint64 tt = m_player->totalTime(); // returns -1    

    qDebug()<<"time==" <<tt;      

    m_player->show();

--------------------

When i run the code on I am dont see any video playback happening on the widget area ,

and I am getting the following error  when i run the app :

 

QLayout: Attempting to add QLayout "" to MainWindow "MainWindow", which already has a layout QWidget::setLayout: Attempting to set QLayout "" on MainWindow "MainWindow", which already has a layout

(<unknown>:1755): GStreamer-CRITICAL **: gst_debug_add_log_function: assertion `func != NULL' failed

 time== -1

Also note that the time returned by function totalTime() is -1

can anybody tell me what could be wrong here ??  i tried different file types line mp4/mov but i am getting same error .

 

please help.