QtMultimedia issue, missing GStreamer after configure

[jsulm]

@matio You should check the configure log to see what exactly is missing from GStreamer

[matio]

@jsulm I don't realy know what this means:

+ cd /home/debian/raspi/qt-everywhere-src-5.12.5/config.tests/gpu_vivante && /home/debian/raspi/qt-everywhere-src-5.12.5/qtbase/bin/qmake "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_CFLAGS += --sysroot=/home/debian/raspi/sysroot" "QMAKE_CXXFLAGS += --sysroot=/home/debian/raspi/sysroot" "QMAKE_LFLAGS += --sysroot=/home/debian/raspi/sysroot" -early "CONFIG += cross_compile" /home/debian/raspi/qt-everywhere-src-5.12.5/qtmultimedia/config.tests/gpu_vivante
+ cd /home/debian/raspi/qt-everywhere-src-5.12.5/config.tests/gpu_vivante && MAKEFLAGS= /usr/bin/make
> /home/debian/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++ -c -pipe -marm -mfpu=vfp -mtune=arm1176jzf-s -march=armv6zk -mabi=aapcs-linux -mfloat-abi=hard --sysroot=/home/debian/raspi/sysroot --sysroot=/home/debian/raspi/sysroot -O2 -std=gnu++11 -w -fPIC  -I/home/debian/raspi/qt-everywhere-src-5.12.5/qtmultimedia/config.tests/gpu_vivante -I. -I/home/debian/raspi/qt-everywhere-src-5.12.5/qtbase/mkspecs/devices/linux-rasp-pi-g++ -o main.o /home/debian/raspi/qt-everywhere-src-5.12.5/qtmultimedia/config.tests/gpu_vivante/main.cpp
> /home/debian/raspi/qt-everywhere-src-5.12.5/qtmultimedia/config.tests/gpu_vivante/main.cpp:32:20: error: ‘GL_VIV_YV12’ was not declared in this scope
>  const int format = GL_VIV_YV12;
>                     ^
> Makefile:179 : la recette pour la cible « main.o » a échouée
> make: *** [main.o] Erreur 1
test config.qtmultimedia_multimedia.tests.gpu_vivante FAILED
looking for library gstreamer_1_0
Trying source 0 (type pkgConfig) of library gstreamer_1_0 ...
pkg-config use disabled globally.
  => source produced no result.
test config.qtmultimedia_multimedia.libraries.gstreamer_1_0 FAILED
looking for library gstreamer_0_10
Trying source 0 (type pkgConfig) of library gstreamer_0_10 ...
pkg-config use disabled globally.
  => source produced no result.
test config.qtmultimedia_multimedia.libraries.gstreamer_0_10 FAILED
executing config test linux_v4l
+ cd /home/debian/raspi/qt-everywhere-src-5.12.5/config.tests/linux_v4l && /home/debian/raspi/qt-everywhere-src-5.12.5/qtbase/bin/qmake "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_CFLAGS += --sysroot=/home/debian/raspi/sysroot" "QMAKE_CXXFLAGS += --sysroot=/home/debian/raspi/sysroot" "QMAKE_LFLAGS += --sysroot=/home/debian/raspi/sysroot" -early "CONFIG += cross_compile" /home/debian/raspi/qt-everywhere-src-5.12.5/qtmultimedia/config.tests/linux_v4l
+ cd /home/debian/raspi/qt-everywhere-src-5.12.5/config.tests/linux_v4l && MAKEFLAGS= /usr/bin/make
> /home/debian/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++ -c -pipe -marm -mfpu=vfp -mtune=arm1176jzf-s -march=armv6zk -mabi=aapcs-linux -mfloat-abi=hard --sysroot=/home/debian/raspi/sysroot --sysroot=/home/debian/raspi/sysroot -O2 -std=gnu++11 -w -fPIC  -I/home/debian/raspi/qt-everywhere-src-5.12.5/qtmultimedia/config.tests/linux_v4l -I. -I/home/debian/raspi/qt-everywhere-src-5.12.5/qtbase/mkspecs/devices/linux-rasp-pi-g++ -o main.o /home/debian/raspi/qt-everywhere-src-5.12.5/qtmultimedia/config.tests/linux_v4l/main.cpp
> /home/debian/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++ -mfloat-abi=hard --sysroot=/home/debian/raspi/sysroot --sysroot=/home/debian/raspi/sysroot -Wl,-O1 -Wl,-rpath-link,/home/debian/raspi/sysroot/opt/vc/lib -Wl,-rpath-link,/home/debian/raspi/sysroot/usr/lib/arm-linux-gnueabihf -Wl,-rpath-link,/home/debian/raspi/sysroot/lib/arm-linux-gnueabihf -o linux_v4l main.o      
test config.qtmultimedia_multimedia.tests.linux_v4l succeeded
looking for library openal
Trying source 0 (type pkgConfig) of library openal ...
pkg-config use disabled globally.
  => source produced no result.
Trying source 1 (type inline) of library openal ...
  => source failed condition 'config.win32'.
Trying source 2 (type inline) of library openal ...
  => source failed condition 'config.darwin'.
Trying source 3 (type inline) of library openal ...
+ cd /home/debian/raspi/qt-everywhere-src-5.12.5/config.tests/openal && /home/debian/raspi/qt-everywhere-src-5.12.5/qtbase/bin/qmake "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_CFLAGS += --sysroot=/home/debian/raspi/sysroot" "QMAKE_CXXFLAGS += --sysroot=/home/debian/raspi/sysroot" "QMAKE_LFLAGS += --sysroot=/home/debian/raspi/sysroot" -early "CONFIG += cross_compile" 'QMAKE_USE += openal' 'QMAKE_LIBS_OPENAL = /home/debian/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenal.so' /home/debian/raspi/qt-everywhere-src-5.12.5/qtmultimedia/config.tests/openal
+ cd /home/debian/raspi/qt-everywhere-src-5.12.5/config.tests/openal && MAKEFLAGS= /usr/bin/make
> /home/debian/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++ -c -pipe -marm -mfpu=vfp -mtune=arm1176jzf-s -march=armv6zk -mabi=aapcs-linux -mfloat-abi=hard --sysroot=/home/debian/raspi/sysroot --sysroot=/home/debian/raspi/sysroot -O2 -std=gnu++11 -w -fPIC  -I/home/debian/raspi/qt-everywhere-src-5.12.5/qtmultimedia/config.tests/openal -I. -I/home/debian/raspi/qt-everywhere-src-5.12.5/qtbase/mkspecs/devices/linux-rasp-pi-g++ -o main.o /home/debian/raspi/qt-everywhere-src-5.12.5/qtmultimedia/config.tests/openal/main.cpp
> /home/debian/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++ -mfloat-abi=hard --sysroot=/home/debian/raspi/sysroot --sysroot=/home/debian/raspi/sysroot -Wl,-O1 -Wl,-rpath-link,/home/debian/raspi/sysroot/opt/vc/lib -Wl,-rpath-link,/home/debian/raspi/sysroot/usr/lib/arm-linux-gnueabihf -Wl,-rpath-link,/home/debian/raspi/sysroot/lib/arm-linux-gnueabihf -o openal main.o   /home/debian/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenal.so   
 => source accepted.
test config.qtmultimedia_multimedia.libraries.openal succeeded
looking for library pulseaudio
Trying source 0 (type pkgConfig) of library pulseaudio ...
pkg-config use disabled globally.
  => source produced no result.
test config.qtmultimedia_multimedia.libraries.pulseaudio FAILED
looking for library libresourceqt5
Trying source 0 (type pkgConfig) of library libresourceqt5 ...
pkg-config use disabled globally.
  => source produced no result.
test config.qtmultimedia_multimedia.libraries.libresourceqt5 FAILED
executing config test libclang
test config.qttools_qdoc.tests.libclang FAILED
executing config test webengine-alsa

But I also found something interesting at the end of this page:

https://wiki.qt.io/RaspberryPi2EGLFS?fbclid=IwAR14XF1aB41xqTVaZVKE_eddyezT1tSZcgM-zPmvyDIyEvUgvTSMPyZUT8A

"Unfortunately the GStreamer-based multimedia stuff is not quite usable at the time of writing - accelerated video works only sometimes (and with glitches), while the camera is just broken."

What do you think about this? Is it a good idea to use QtMultimedia or is there a better way to play video on a Qt application with something like libvlc?

[matio]

Sorry for double-post, it semmed that I haven'nt installed pkg-config on my VM...

Now it seems to be configured properly:

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

Thanks for your help !

You saved my life !

[Pablo J. Rogina]

@matio said in QtMultimedia issue, missing GStreamer after configure:

You saved my life !

Were you finally able to cross-compile Qt Multimedia with GStreamer support? If so please don't forget to mark your post as such. Thanks

[CKurdu]

@matio said in QtMultimedia issue, missing GStreamer after configure:

VM

Hi Matio,
Can you play videos using Qt Multimedia with no problem? Because I didn't, it plays videos but a problematic way. I have raspberry pi 3 b+ and I use qt vlc library to work around this problem.

[matio]

@CKurdu

Hi,

I have not tested it for now, I just managed to compile. It took a few hours...
But your comment seems to sadly confirm what I read here (last section of the page):

https://wiki.qt.io/RaspberryPi2EGLFS?fbclid=IwAR14XF1aB41xqTVaZVKE_eddyezT1tSZcgM-zPmvyDIyEvUgvTSMPyZUT8A

The issue seems to be relative to GStream and not solved yet.

I'll try as soon as possible and keep you informed about this.

[matio]

@CKurdu

Hi,

Finaly, I can't even play videos. I can only play sounds.

When I compile and execute I have this mesasge:

CRITICAL **: gst_video_decoder_set_latency: assertion 'GST_CLOCK_TIME_IS_VALID (min_latency)' failed

So I will use libvlc unless you know what this error means.

[CKurdu]

@matio
I am using vlc-qt for my current project. OMXPlayer may be another solution with QProcess but I haven't tried it yet.
Which raspberry are you using?

[matio]

@CKurdu

Hi, sorry for the late answer.

I had issues installing vlc-qt, but suceededly install libvlc and it was what I needed finaly.

I'm still interested in vlc-qt if you can help me.

I'm using RaspberryPi 3B+

[CKurdu]

@matio
Hi, I didn't install vlc-qt , I installed vlc and compiled vlc-qt library. My project is not qml based. I am using a widget-based qt app and at this time I am successful.

I can try to help you as much as I can.

[matio]

@CKurdu
Hi!
Thank you for your help.

I followed the instructions of this page:

https://github.com/vlc-qt/vlc-qt/blob/master/BUILDING.md

But during the make step, at 93% of the compilation I have an error:

/usr/lib/arm-linux-gnueabihf/qt5/bin/uic: relocation error: /usr/lib/arm-linux-gnueabihf/qt5/bin/uic: symbol qt_qhash_seed, version Qt_5 not defined in file libQt5Core.so.5 with link time reference
AUTOUIC: error: process for ui_Player.h needed by
 "/home/pi/vlc-qt/vlc-qt/tests/widgets/ui/Player.cpp"
failed:
/usr/lib/arm-linux-gnueabihf/qt5/bin/uic: relocation error: /usr/lib/arm-linux-gnueabihf/qt5/bin/uic: symbol qt_qhash_seed, version Qt_5 not defined in file libQt5Core.so.5 with link time reference

uic failed...
tests/widgets/CMakeFiles/Test_WidgetsPlayer_automoc.dir/build.make:60 : la recette pour la cible « tests/widgets/CMakeFiles/Test_WidgetsPlayer_automoc » a échouée
make[2]: *** [tests/widgets/CMakeFiles/Test_WidgetsPlayer_automoc] Erreur 1
make[2] : on quitte le répertoire « /home/pi/vlc-qt/vlc-qt/build »
CMakeFiles/Makefile2:954 : la recette pour la cible « tests/widgets/CMakeFiles/Test_WidgetsPlayer_automoc.dir/all » a échouée
make[1]: *** [tests/widgets/CMakeFiles/Test_WidgetsPlayer_automoc.dir/all] Erreur 2
make[1] : on quitte le répertoire « /home/pi/vlc-qt/vlc-qt/build »
Makefile:141 : la recette pour la cible « all » a échouée
make: *** [all] Erreur 2

Do you have an idea of what happened ?

[getgo]

@CKurdu Hi, can your try change the amount of memory made for the GPU to 256? it's in the

raspi-config -> Advance option -> Memory split -> 256

because I stuck to compiling gstreamer

[CKurdu]

@matio

I compiled vlc-qt on raspbian os. Also don't use "make -j8" command just use "make" or may be "make -j4"

[matio]

@CKurdu

I compiled it on raspbian too and I haven't used the -j option.

I tried again today but I still have the same error.

The issue is surely related to this message:

"the version Qt_5 not defined in file libQt5Core.so.5"

But I don't know what this means and how to solve it.

[CKurdu]

Which version of Qt did you install and how?