Convert Milliseconds to minutes and seconds

QString MainWindow::getLengthCurrentMedia(qint64 current){
    QString sCurrent = "";
    QString sMinutes = "";
    QString sSeconds = "";
    current = current / 1000;
    int minutes = 0;
    int seconds = 0;
    minutes = current / 60;
    seconds = current % 60;

    if(minutes > 9){
        sMinutes = QString::number(minutes);
    }else{
        sMinutes = "0"+QString::number(minutes);
    }

    if(seconds > 9){
        sSeconds = QString::number(seconds);
    }else{
        sSeconds = "0"+QString::number(seconds);
    }

    sCurrent = sMinutes +":"+sSeconds;
    return sCurrent;
    //QMediaPlayer *player = new QMediaPlayer();
    //i used this function => getLengthCurrentMedia(player->duration());
}