[question]set output device in QT

[虞申鹏]

Hi,everyone!

I want to play different mp3 files for driver and passanger with two
different applications.
or the same application which is deployed by two QT MultiMedia components.

>Driver：HMI-->QT-->GStreamer-->PulseAudio-->ALSA--SoundCard1
>Passanger：HMI-->QT-->GStreamer-->PulseAudio-->ALSA--SoundCard2

Now I can route the output device by command[gst-launch-1.0 playbin
uri=file:///test.mp3 audio-sink="alsasink device=hw:0,0"].

In QT MultiMedia Soucecode we create a playbin element to
play the media file.

But I don't know how to set the device to the [audio-sink] element.
Who can give me some tips？

Best regards,
------
Yu
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