Hi,
In my project I have video to display and at time I will need to overlay video with some image that has transparent background. I have tried setting transparent image as QPixmap into QLabel, but here is what I get, the transparency is visible when the label/image is over the main widget, but when the image is over the video, the transparency is over black background and no over the video. This I tried with QT 4.8.x

Now when I got QT5, I decided to try it out. To convert my project to qt5, might take some time, so for testing purpose, i use "Player" example http://qt-project.org/doc/qt-5.0/qtm...ts-player.html
Then I added the following code:
Qt Code: 
  1. iconLabel = new QLabel(this);
  2.     QPixmap p("controlNext.png");
  3.     p = p.scaled(192,192);
  4.     iconLabel->setPixmap(p);
  5.     iconLabel->setGeometry(100,200,192,192);
  6.     cb = new ControlButton(QIcon("controlNext.png"),
  7.                            QIcon("controlNextHovered.png"),
  8.                            QIcon("controlNextPressed.png"),
  9.                            this);
  10.     cb->setIconSize(QSize(192,192));
  11.     cb->setGeometry(300,200,192,192);
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I have tried displaying transparent background image via QLabel and a QPushButton. ControlButton, is my custom button that I use in my project. Attached is what I get. The image is transparent over the application, but with black background over the video.
image.jpg

Is there a way to set it up so that there will be no black background when widgets/images is over the video?
I have searched this site, but seems without any luck. I have tried "Videos get pimped Published November 28, 2008 | By tbastian" at http://blog.qt.digia.com/blog/2008/11/ , but then no video is shown at all.

Any help would be appreciated
Thanks