[Interest] logging category for qmediaplayer

[maitai]

Hello,
I am having a problem with sound output on some devices and would like 
to enable qloggincategory for QMediaPlayer, in order to get an idea of 
what is going on.

I tried

QLoggingCategory::setFilterRules("qt.multimedia.* = true");

and various other ideas but no output in the console concerning 
qmediaplayer.

Is it possible to force a verbose output for this?

Thanks
Philippe