QMediaPlayer ERROR defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer

SGaist

You should check the Qt configuration logs. There might be something that is not found thus your issue of missing plugins.

Luisa

Where can I find it?

SGaist

As silly as it may sound, in the folder where Qt was built using your system.

Luisa

Found it

cat ./build/tmp/work/aarch64-xilinx-linux/qtmultimedia/5.9.4+gitAUTOINC+d83467be15-r0/temp/log.do_configure.1884

DEBUG: Executing shell function qmake5_base_preconfigure
DEBUG: Shell function qmake5_base_preconfigure finished
DEBUG: Executing shell function do_configure
NOTE: qmake prevar substitution: ' '
NOTE: qmake configure substitution: ' -alsa -no-feature-openal -pulseaudio -no-gstreamer'
Info: creating stash file /home/posani/PetaLinux2018.2/NOX/build/tmp/work/aarch64-xilinx-linux/qtmultimedia/5.9.4+gitAUTOINC+d83467be15-r0/build/.qmake.stash
Info: creating cache file /home/posani/PetaLinux2018.2/NOX/build/tmp/work/aarch64-xilinx-linux/qtmultimedia/5.9.4+gitAUTOINC+d83467be15-r0/build/.qmake.cache

Running configuration tests...
Checking for ALSA... yes
Checking for Vivante GPU... no
Checking for Video for Linux... yes
Checking for PulseAudio >= 0.9.10... yes
Checking for libresourceqt5... no
Done running configuration tests.

Configure summary:

Qt Multimedia:
ALSA ................................... yes
GStreamer 1.0 .......................... no
GStreamer 0.10 ......................... no
Video for Linux ........................ yes
OpenAL ................................. no
PulseAudio ............................. yes
Resource Policy (libresourceqt5) ....... no
Windows Audio Services ................. no
DirectShow ............................. no
Windows Media Foundation ............... no

Qt is now configured for building. Just run 'make'.
Once everything is built, you must run 'make install'.
Qt will be installed into '/home/posani/PetaLinux2018.2/NOX/build/tmp/work/aarch64-xilinx-linux/qtmultimedia/5.9.4+gitAUTOINC+d83467be15-r0/recipe-sysroot/usr'.

Prior to reconfiguration, make sure you remove any leftovers from
the previous build.

DEBUG: Shell function do_configure finished
DEBUG: Executing python function do_qa_configure
DEBUG: Python function do_qa_configure finished
DEBUG: Executing shell function qmake5_base_postconfigure
DEBUG: Shell function qmake5_base_postconfigure finished

In effect my qtmultimedia doesn't see gstreamer..

where did I go wrong?

SGaist

Check the test build logs to see what fails with the QtMultimedia module.

If you add the -v option to your configure call you should see it on the console already.

Luisa

QT multimedia did not configure gstreamer among its packages.
I have modified the configuration file adding

@PACKAGECONFIG ??= "${@bb.utils.contains('DISTRO_FEATURES', 'alsa', 'alsa', '', d)}
${@bb.utils.contains('DISTRO_FEATURES', 'pulseaudio', 'pulseaudio', '', d)}
gstreamer010 " @

and now it no longer gives me the error.
If I want to play h264 files instead it gives me the error:

Warning: "No decoder available for type 'video/x-h264, stream-format=(string)avc, width=(int)640, height=(int)512, parsed=(boolean)true, align....

and the video doesn't start...

I'm discouraged..

I looked for solutions to my problem but nothing seems to work.
Grazie per il tuo aiuto

Luisa

SGaist

Did you install the gstreamer plugins packages ?

Luisa

Yes I install all gstreamer plugins packages.

I try to install gstreamer 1.0 plugins packages.

Unfortunately the situation does not change.
I also installed x264.
Same story...

What could I try to do?

SGaist

Can you play that file from the command line using gstreamer directly ?

Luisa

The solution to my problem was to insert ugly gst plugins, forcing the commercial license.

Thanks for your help

Luisa

But I have another problem. When I try to view a video I have the following error

Warning: "Failed to connect: Connection refused"
GET_DMA_PHY: Invalid argument
Failed to import fd : 1973231776
myprogram: base/omx_codec/omx_codec.cpp:1275: void Codec::TreatFillBufferCommand(Task*): Assertion `success' failed.

and the software crashes.

Has anyone solved a problem similar to mine?
Thanks in advance

Luisa

SGaist

Again: is it working on the command line with gstreamer directly ?

Luisa

I am working with an embedded system so gstreamer could not throw the output on the screen.
I use the QMediaPlayer class.
The instruction that fails is the

myPlayer-> setMedia (qurl :: fromLocalFile (video2show.at (0)));

Small and low resolution videos work very badly. Larger videos cause the crash.

Are there any environment variables to set to allocate more resources to the running program?

Thanks in advance

Luisa

SGaist

I don't see the relation between an embedded system and the fact that streamer output on screen.

What is that device ?
What are its specifications ?

vicky_mac

hi @Luisa i am also having same issue with Qt in petalinux.. QMediaPlayer not found ,
I went through your comments and saw that you got it working . Can you please help me how to enable it.