GStreamer does not release camera resource on pipeline shutdown

[xargon]

I have a pipeline which simply streams data from the camera using
QtGStreamer. The pipeline works and I can stream without any problems. The
pipeline is defined as:

    

This works fine and when I am done, I dispose of the pipeline as:

    

However, the issue is that this does not seem to release my camera resource.
Trying to start the pipeline again or using an app like `cheese` comes back
with the error that the camera resource is busy.

How can I ensure that the pipeline is really gone and all the resources are
freed.



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