QMediaPlayer - "Internal data flow error."



  • Hello.

    I am trying to read a video input in Linux (Ubuntu 16.04 LTS) using QMediaPlayer. The video is read and show fine. However after some random time i constantly get this error:
    Error: "Internal data flow error." and my video stops showing. By opening the video again it resumes as usual.

    The code I used to confirm the error:

    MainWindow::MainWindow(QWidget *parent)
        : QMainWindow(parent)
        , ui(new Ui::MainWindow)
        , player(0, QMediaPlayer::VideoSurface) //QMediaPlayer
        , videoItem(0) // QGraphicsVideoItem
    {
        ui->setupUi(this);
    
        videoItem = new QGraphicsVideoItem;
        QGraphicsScene *scene = new QGraphicsScene(this);
        ui->graphicsView->setScene(scene);
        scene->addItem(videoItem);
        player.setVideoOutput(videoItem);
        player.setMedia(QUrl("v4l2:///dev/video0"));
        player.play();
    }
    

    What could be causing this error and how can I resolve it without automatically calling the video on QMediaPlayer::StoppedState?


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