QVideoFrame VideoFilterRunnable::run(QVideoFrame* input,
                                     const QVideoSurfaceFormat& surfaceFormat,
                                     QVideoFilterRunnable::RunFlags flags)
{


    if (input->isValid()) {
        if (input->map(QAbstractVideoBuffer::ReadOnly)) {
            cv::Mat img = cv::Mat(m_videoHeight, m_videoWidth, CV_8UC3, input->bits());
            imwrite("testdms.png", img);
        } else {
            qDebug() << "error while mapping frame";
        }
    } else {
        qDebug() << "invalid input";
    }

    return *input;
}