qt 视频播放

可以播出视频，待完善

player = new QMediaPlayer(this);

    playlist = new QMediaPlaylist();

    playlist->addMedia(QUrl::fromLocalFile("f:/yiqi2.mp4"));

    player->setPlaylist(playlist);

    videoWidget = new QVideoWidget(this);

    videoWidget->resize(800,600);

    setCentralWidget(videoWidget);

    player->setVideoOutput(videoWidget);

    videoWidget->show();

    player->play();