qt5 android 启动黑屏,的[Windows，QT5，QMediaPlayer，QMediaPlaylist]：微小的时间黑屏在当前视频源改变...

int main(int argc, char *argv[]) {

QApplication a(argc, argv);

QMediaPlaylist* playlist = new QMediaPlaylist(&a);

playlist->addMedia(QUrl::fromLocalFile("./Resources/fractal-files/A-060405V4651.WMV"));

playlist->addMedia(QUrl::fromLocalFile("./Resources/fractal-files/E-102604.WMV"));

playlist->addMedia(QUrl::fromLocalFile("./Resources/fractal-files/C-102304.WMV"));

QMediaPlayer* player = new QMediaPlayer(&a);

player->setPlaylist(playlist);

QVideoWidget* videoWidget = new QVideoWidget;

player->setVideoOutput(videoWidget);

player->play();

videoWidget->show();

QTimer* t = new QTimer;

QObject::connect(t, &QTimer::timeout, [&](){

playlist->setCurrentIndex(playlist->nextIndex());

player->play();

videoWidget->setWindowTitle(playlist->currentMedia().canonicalUrl().fileName());

t->start((qrand()%5 + 5)*1000);

});

t->start((qrand()%5 + 5)*1000);

QTimer* t2 = new QTimer;

QObject::connect(t2, &QTimer::timeout, [&](){

player->setPosition(qrand() % player->duration());

videoWidget->setWindowTitle(playlist->currentMedia().canonicalUrl().fileName());

t2->start((qrand()%2 + 2)*1000);

});

t2->start((qrand()%2 + 2)*1000);

return a.exec();

}

这里有两个问题：

1.当改变位置

player->setPosition(qrand() % player->duration());

有一点延迟(我的客户能接受这一点，但顺利越好)

2.当次e视频源改为：

playlist->setCurrentIndex(playlist->nextIndex());

player->play();

有一个客户端不想要的持续时间很短的黑屏。他想要的效果，至少改变现在的位置时为相同：

player->setPosition(qrand() % player->duration());

可以改变与QT5 Windows上的视频源，当我们删除此黑屏？或者我们可以用其他库/框架来做到这一点(更改视频源时播放没有黑屏差距的视频列表)？ (在MacOs上，切换顺畅)

非常感谢！

2015-11-02

aviit

+0

这是一个相对的问题：http://stackoverflow.com/questions/27517619/is-there-a-way-in-qt-to-force-qmediaplayer-to-buffer-a-file-without-playing-它 –

+0

我有一些提示使用QMediaGaplessPlaybackControl，但我没有成功 –