Problem while deploying video on Android by QGraphicsVideoItem and QMediaPlayer (QT 5.2.1)

[hanhkim]

Hi everybody, I really need help here! :(

I am working on QT by deploying a small project to Android 4.0.3 (API 15). I use this code below to run the project. my project is running a video on Android and I use QGraphicsVideoItem and QMediaPlayer. I built it successfully and run by Desktop 5.2.1 MinGW 32bit, everything is fine! but when I deploy it to the emulator. the audio is fine but the video doesn't show on! I don't know what the problem is.
I hope you can give me some advices. Thanks in advance.

QMediaPlayer *player = new QMediaPlayer;

QGraphicsVideoItem *item = new QGraphicsVideoItem;


QGraphicsScene *scene = new QGraphicsScene;
QGraphicsView *graphicsView = new QGraphicsView(scene);

player->setVideoOutput(item);
graphicsView->scene()->addItem(item);
graphicsView->show();

player->setMedia(QUrl("D:/video2.mp4"));
player->play();