error while playing video on qt creator

[ftl_embedded]

Hello,

QT version : Qt 5.5.0
I am trying to play video on qtcreator with following code:

player->setVideoOutput(vw);
player->setMedia(QUrl::fromLocalFile("/home/aakash/Desktop/chequeinsert.mp4"));

vw->setGeometry(100,100,300,400);
vw->show();

player->play();

qDebug()<<player->state();

after running code i get following message and unable to see video. Please help
defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"