QMediaPlayer not showing Video on Raspberry Pi, works fine on Windows

[Kester]

Hello,
I'm trying to play a video in a qt application, running on a raspberry pi 4. The application compiles and I can run it, but the window is blanc. Also no errors.

When I compile and run the same project on Windows on the other hand, the video plays.

My code inside of the MainWindow-Constructor is:

    ui->setupUi(this);

    QMediaPlayer *player = new QMediaPlayer;

    player->setMedia(QUrl("qrc:/videos/small.mp4"));

    QVideoWidget *videoWidget = new QVideoWidget;
    setCentralWidget(videoWidget);
    player->setVideoOutput(videoWidget);
    player->play();

The video file is in the project folder, but also on the pi, in the same directory as the executable. Am I missing some linux Packages on the Pi?

[SGaist]

Hi and welcome to devnet,

Can you play that file with GStreamer on your Pi ?
Which version of Qt are you using ?
Are you cross-compiling ?