QMediaPlayer crashes when object is in secondary thread

This is a MinGW build, cross-built from Linux to Windows. If the commented out line in the example file is enabled I see a crash in the DirectShow plugin. I sadly can't provide any debug info because of the cross-nature of this setup, I just can't get gdb to show anything sensible and WinDbg does not understand the MinGW debug information.

If you try this and can't reproduce it: try other machines. I can't reproduce it on one Win7 and one Win10 machine I have around either, but my customer can reproduce it on both Win7 and Win10, on 3 out of 4 machines.

You don't need to have the test.wav file around, I actually don't have that either, it crashes also without this. If it does not crash it shows:

DirectShowPlayerService::doSetUrlSource: Unresolved error code 0x80040216 ()

This is probably another bug, but maybe you find it when looking into this one