I use gstreamer to output video to screen. In my app, like in qtInterface example there's first window that allows to choose file from mounted SD card and when I hit 'play' button this window hides and video starts to play. But in my case control widget with buttons isn't displayed so there's a green rectangle instead of it on the top of the screen.
My guess is that this thing in qtInterface works because it actually just runs external app.
If anybody had the same issue and has any idea please reply.
