VideoWidget problem

Hi,

I am using videoWidget to play a video file. But i want to play a video with original aspect ration which means i have to set videoWidget::AspectrationAuto property. But when I play with original aspect ration the video is played in the middle of the videowidget and the rest (upper and bottom side) is seen as a black screen. I can't set the videowidget screen size to the original video frame size. I would be thankful for any suggestions.

Thank You,
Baluk

Is the video widget in a layout? If so, set its SizePolicy to Fixed/Fixed, that should be enough.

Thanks for the reply. I am getting some syntax errors when setting QSizePolicy. Here I am copying my code can please check whats wrong.

Code:

---

QSizePolicy policy = new QSizePolicy();
      policy.setHorizontalPolicy(QSizePolicy::Fixed);
      policy.setVerticalPolicy(QSizePolicy::Fixed);
      videoWidget->setSizePolicy(policy);

---

Thank You,
baluk

Obviously the first line is wrong, it should be:

Code:

---

QSizePolicy policy;

---

I still can't rid of the main problem. I have 3 QFrames and I applied grid layout to all. And I used one frame for video play. QSizePolicy doesn't solve the problem.

Please show us some code reproducing the problem. Just please don't post your whole application.

Sure.

Code:

---

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
   ui->setupUi(this);
 
 
   this->mediaObject = new Phonon::MediaObject(this);
   this->audioOutput = new Phonon::AudioOutput(Phonon::VideoCategory,this);
     Phonon::createPath(mediaObject, audioOutput);
     Phonon::VideoWidget *videoWidget = new Phonon::VideoWidget(ui->frame);
 
     QSizePolicy policy;
     policy.setHorizontalPolicy(QSizePolicy::Fixed);
     policy.setVerticalPolicy(QSizePolicy::Fixed);
     videoWidget->setSizePolicy(policy);
     videoWidget->setAspectRatio(Phonon::VideoWidget::AspectRatioAuto);
 
     Phonon::createPath(mediaObject, videoWidget);
     QUrl url("output_1.avi");
 
     mediaObject->setCurrentSource(url);
     mediaObject->setTickInterval(1000);
 
    connect(mediaObject, SIGNAL(finished()), mediaObject, SLOT(deleteLater()));
    connect(ui->pause,SIGNAL(clicked()),mediaObject,SLOT(pause()));
    connect(ui->play,SIGNAL(clicked()),mediaObject,SLOT(play()));
    connect(ui->stop,SIGNAL(clicked()),mediaObject,SLOT(stop()));    
}

---

Thank You,

Baluk

Looks like someone forgot to put the video widget in a layout.

Yes. Now I applied the layout.

Code:

---

QHBoxLayout *hVideo = new QHBoxLayout(ui->frame);
     hVideo->addWidget(videoWidget);

---

But still the same result. I am attaching the image of my app output. So you can have a clear picture.

Thank You,
Baluk

What does sizeHint() of the video widget return during playback? Note, you have to query for it during playback, it won't return proper value otherwise.

oke. I did query the sizeHint(), it returns the QSize(640, 480). But its the same value returned for every video. What I thought is, it was returning the player(widget) size but not the video file size. I am not sure.

When do you query for the sizeHint()? Please show us the code.

Sure. Here it is

Code:

---

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
   ui->setupUi(this);
 
 
   this->mediaObject = new Phonon::MediaObject(this);
   this->audioOutput = new Phonon::AudioOutput(Phonon::VideoCategory,this);
     Phonon::createPath(mediaObject, audioOutput);
     Phonon::VideoWidget *videoWidget = new Phonon::VideoWidget(ui->frame);
    QHBoxLayout *hVideo = new QHBoxLayout(ui->frame);
     hVideo->addWidget(videoWidget);
     QSizePolicy policy;
     policy.setHorizontalPolicy(QSizePolicy::Fixed);
     policy.setVerticalPolicy(QSizePolicy::Fixed);
     videoWidget->setSizePolicy(policy);
     videoWidget->setAspectRatio(Phonon::VideoWidget::AspectRatioAuto);
     QSize size= videoWidget->sizeHint();
     videoWidget->setFixedSize(size);
     qDebug() << size;
     Phonon::createPath(mediaObject, videoWidget);
    QUrl url("output_1.avi");
    mediaObject->setCurrentSource(url);
 
     mediaObject->setTickInterval(1000);
 
    connect(mediaObject, SIGNAL(finished()), mediaObject, SLOT(deleteLater()));
    connect(ui->pause,SIGNAL(clicked()),mediaObject,SLOT(pause()));
    connect(ui->play,SIGNAL(clicked()),mediaObject,SLOT(play()));
    connect(ui->stop,SIGNAL(clicked()),mediaObject,SLOT(stop()));
}

---

Let me repeat - query for the sizeHint() after the video starts playing. By the way, your code doesn't work because you set a fixed size on the video widget so how do you expect it to resize to proper size?

Hi wysota you are right. It seems working fine now. I am getting desired output. Thank you very much for your help and sorry for my many questions :).

No problem, we are here to help.