QClipboard *clipboard = QApplication::clipboard();
QString name = "file:///" + fileInfo.filePath();
QUrl a(name);
qDebug() <<"mp4 filepath is " << name;
QList<QUrl> urls;
urls.append(a);
QMimeData *data = new QMimeData;
data->setUrls(urls);
clipboard->setMimeData(data);