#include <QApplication>

#include <QMediaCaptureSession>
#include <QScreenCapture>
#include <QMediaRecorder>
#include <QMediaFormat>
#include <QUrl>

#include <QTimer>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QMediaCaptureSession session;

    QScreenCapture screen;
    session.setScreenCapture(&screen);
    screen.setScreen(a.screens().at(1)); // <-- Change to the index of a rotated screen !!
    screen.start();

    QMediaRecorder recorder;
    session.setRecorder(&recorder);

    recorder.setOutputLocation(QUrl::fromLocalFile(a.applicationDirPath() +  "/x.mp4"));

    QTimer timer;

    int count = 0;
    QObject::connect(&timer, &QTimer::timeout, &a, [&]
    {
        qDebug() << ++count;
        if (count == 5)
        {
            recorder.stop();
        }
        if (count == 10)
        {
            a.quit();
        }
    });

    timer.start(1000);

    return a.exec();
}