QString DefaultMediaFilter()
{
    return QObject::tr("All Supported Media Files (*.ac3 *.jpg *.jpeg *.png *.gif *.bmp *.tif *.tiff *.mpg *.mpeg *.mpe *.m2t *.m2ts *.m2v *.m4a *.mts *.mp3 *.mp4 *.mov *.mxf *.wav)");
}

QString DefaultImageFilter()
{
    return QObject::tr("Image Files (*.jpg *.jpeg *.png *.gif *.bmp *.tif *.tiff)");
}

QString MediaFilters()
{
    const QString filters = QObject::tr(
        "All Files (*.*);;"
        "%1;;"
        "%2;;"
        "MPEG (*.mpg *.mpeg *.mpe *.m2t *.m2ts *.m2v *.m4a *.mp3 *.mp4 *.mts);;"
        "MP3 Audio (*.mp3);;"
        "MP4 (*.mp4);;"
        "MXF (*.mxf);;"
        "QuickTime Movie (*.mov);;"
        "WAV Audio (*.wav)")
            .arg(DefaultMediaFilter())
            .arg(DefaultImageFilter());

    return filters;
}

QString defaultMediaFilter = DefaultMediaFilter();
    QString mediaFilters = MediaFilters();

QFileDialog::getOpenFileNames(this, "Open File", QString(), mediaFilters, &defaultMediaFilter); // crash