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    QString path = QFileDialog::getOpenFileName(this, tr("Ñ¡ÔñÊÓƵ"), ".", tr("Image Files(*.flv *.mp4)"));//µÃµ½ÊÓƵ·¾¶
    mediaPlayer = new QMediaPlayer();
    layout_video = new QVBoxLayout;
    videoWidget = new QVideoWidget();
    layout_video->setMargin(1);
    //¸ù¾Ýlabel_player³ß´çÉèÖò¥·ÅÇøÓò
    videoWidget->resize(ui->label_player->size());
    layout_video->addWidget(videoWidget);
    ui->label_player->setLayout(layout_video);
     mediaPlayer->setVideoOutput(videoWidget);
     mediaPlayer->setMedia(QUrl::fromLocalFile(path));
     mediaPlayer->play();