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Video Stream Does Not Working

I am trying to customize QGroundControl. Everything works fine except camera. Normally, camera works fine in QGroundControl.AppImage which is downloaded from bluerov2-software-setup. But when I downloaded the source code of QGroundControl from mavlink/qgroundcontrol/releases/tag/v4.0.5 and try to customize it in QtCreator, video stream of the vehicle is not coming. Instead of that my webcam stream is coming.
These are the screenshots of my custom program: (Sorry I can only put two links)
If you have source code of blurobotics qgroundcontrol which is located bluerov2-software-setup and send me that, it would be great. Thanks in advance.

Hi @gorkemsavran,

I bumped your trust level, you should be able to share more links now.
It looks like you are missing dependencies and that is making QGC build without GStreamer support. Make sure you have all the dependencies required and pay attention to the output of the build process to check what is going on.

Thanks for dependency advice. I thought that I have downloaded all gstream packages but I was wrong. I downloaded all packages from this page: https://github.com/mavlink/qgroundcontrol/blob/master/src/VideoReceiver/README.md
Now, it works for me.

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