[Interest] QMultimedia crashes or doesn't work on recent linux releases

Jason H jhihn at gmx.com
Mon Nov 14 19:25:06 CET 2016


Have you ensured that the gstreamer configuration is valid?
Is it localized to one machine, or many machines on one distro, or all machines?

I'm willing to bet the distro doesn't configure gstreamer properly. (But that's just a guess)

> Sent: Monday, November 14, 2016 at 1:08 AM
> From: maitai <maitai at virtual-winds.org>
> To: Interest at qt-project.org
> Subject: [Interest] QMultimedia crashes or doesn't work on recent linux releases
>
> Hello,
> 
> Since Ubuntu 16.04, my qt (qt5.7 official release/QWidget-based) 
> application cannot play a sound (no crash, but no sound). The very same 
> app works fine with Ubuntu 14.04. I get that kind of messages in the 
> console when trying to play a sound (.mp3 file) with QMultimedia:
> 
> Warning: "No decoder available for type 'audio/mpeg, mpegversion=(int)1, 
> mpegaudioversion=(int)1, layer=(int)3, rate=(int)44100, channels=(int)2, 
> parsed=(boolean)true'."
> 
> or (depending on the machine)
> 
> defaultServiceProvider::requestService(): no service found for - 
> "org.qt-project.qt.mediaplayer"
> 
> Even worst, I have a user running latest linux Manjaro 64bits who is 
> reporting a crash each time a sound is played (i.e. the app works fine 
> until it tries to play a sound). It crashes with this message:
> 
>   symbol lookup error: (...)/mediaservice/libgstmediaplayer.so: undefined 
> symbol: gst_video_connector_get_type
> 
> He is also saying that the same app build is running fine on an older 
> Manjaro machine.
> 
> I ended up for the time being by removing all sounds on all linux 
> platforms, which is a bit sad as you can imagine.
> 
> I believe it's gstreamer related, but before I start digging, may be 
> someone has some clues about that?
> 
> Any help welcomed
> Philippe Lelong
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> Interest at qt-project.org
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> 



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