qmediaplayer object does not have a valid service



  • Hi All,
    i have installed QT5.5 on my Fedora 20 PC, i also installed QT creator for running and writing my project.
    i have tried to run video using one of the QT example project but no matter what I do, I keep getting the message "QMediaPlayer object does not have a valid service".
    I take a look over the internet but didn't see any relevant solution for this kind of problem, I have saw similar cases in window OS which asking for several DLL installation. I also understand that there is a problem in QT for running video.
    does any one have solution for me?
    I really need help here, thanks in advance.

    IL



  • @ilan-lisha Install libgstreamer through your package manager



  • @raf924 - I already have gst on my Fedora, any other idea?
    thanks for your response.



  • @ilan-lisha I have libgstreamer-0.10.so.0 - libgstreamer-0.10.so.0.30.0



  • @ilan-lisha I also see the error
    Starting /home/.../qt-video-apps/build-videowidget-QT5_5_0-Debug/videowidget...
    defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"



  • @ilan-lisha the solution to this problem is the one i recommended i don't know of any other, try installing any package related to gstreamer and libgstreamer.


  • Lifetime Qt Champion

    Hi and welcome to devnet,

    Check the multimedia plugin with ldd, it should indicate what might be missing on your system.



  • @SGaist Hi and Thanks,
    That's what I get from the multimedia.so using LDD command
    [olegk@localhost qt-everywhere-opensource-src-5.5.0]$ ldd /usr/local/Qt-5.5.0/lib/libQt5Multimedia.so
    linux-vdso.so.1 => (0x00007fff3f2e7000)
    libQt5Network.so.5 => /usr/local/Qt-5.5.0/lib/libQt5Network.so.5 (0x00007f21664ad000)
    libQt5Gui.so.5 => /usr/local/Qt-5.5.0/lib/libQt5Gui.so.5 (0x00007f2165f01000)
    libQt5Core.so.5 => /usr/local/Qt-5.5.0/lib/libQt5Core.so.5 (0x00007f21659b8000)
    libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f2165774000)
    libGL.so.1 => /lib64/libGL.so.1 (0x00007f2165509000)
    libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f2165201000)
    libm.so.6 => /lib64/libm.so.6 (0x00007f2164efa000)
    libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f2164ce3000)
    libc.so.6 => /lib64/libc.so.6 (0x00007f2164924000)
    libz.so.1 => /lib64/libz.so.1 (0x00007f216470e000)
    libpcre16.so.0 => /lib64/libpcre16.so.0 (0x00007f21644af000)
    libdl.so.2 => /lib64/libdl.so.2 (0x00007f21642ab000)
    librt.so.1 => /lib64/librt.so.1 (0x00007f21640a3000)
    /lib64/ld-linux-x86-64.so.2 (0x0000003ef5e00000)
    libglapi.so.0 => /lib64/libglapi.so.0 (0x00007f2163e7b000)
    libXext.so.6 => /lib64/libXext.so.6 (0x00007f2163c69000)
    libXdamage.so.1 => /lib64/libXdamage.so.1 (0x00007f2163a66000)
    libXfixes.so.3 => /lib64/libXfixes.so.3 (0x00007f216385f000)
    libX11-xcb.so.1 => /lib64/libX11-xcb.so.1 (0x00007f216365d000)
    libX11.so.6 => /lib64/libX11.so.6 (0x00007f216331f000)
    libxcb-glx.so.0 => /lib64/libxcb-glx.so.0 (0x00007f2163104000)
    libxcb-dri2.so.0 => /lib64/libxcb-dri2.so.0 (0x00007f2162eff000)
    libxcb.so.1 => /lib64/libxcb.so.1 (0x00007f2162cde000)
    libXxf86vm.so.1 => /lib64/libXxf86vm.so.1 (0x00007f2162ad7000)
    libdrm.so.2 => /lib64/libdrm.so.2 (0x00007f21628cb000)
    libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f21626a7000)
    libXau.so.6 => /lib64/libXau.so.6 (0x00007f21624a2000)
    libpcre.so.1 => /lib64/libpcre.so.1 (0x00007f216223c000)
    liblzma.so.5 => /lib64/liblzma.so.5 (0x00007f2162016000)

    any idea?



  • @raf924
    can you tell please what is the different between gstreamer and libgstreamer?



  • This post is deleted!


  • also for gstreamer
    ldd /usr/lib64/libgstreamer-1.0.so.0
    linux-vdso.so.1 => (0x00007ffffd530000)
    libgobject-2.0.so.0 => /lib64/libgobject-2.0.so.0 (0x0000003efb600000)
    libgmodule-2.0.so.0 => /lib64/libgmodule-2.0.so.0 (0x0000003f05000000)
    libglib-2.0.so.0 => /lib64/libglib-2.0.so.0 (0x0000003ef9600000)
    libm.so.6 => /lib64/libm.so.6 (0x0000003ef6e00000)
    libdl.so.2 => /lib64/libdl.so.2 (0x0000003ef6600000)
    libpthread.so.0 => /lib64/libpthread.so.0 (0x0000003ef6a00000)
    libc.so.6 => /lib64/libc.so.6 (0x0000003ef6200000)
    libffi.so.6 => /lib64/libffi.so.6 (0x0000003efaa00000)
    /lib64/ld-linux-x86-64.so.2 (0x0000003ef5e00000)



  • @ilan-lisha
    could it be the reason?
    While running ./configure -v -qt-xcb -gstreamer -opensource
    I get the error: project ERROR: gstreamer-0.10 development package not found
    even though libgstreamer-0.10.so.0.30.0 is installed in my system.
    In my old configuration: GStreamer .............. no



  • @IL
    Please advice what should I do?


  • Lifetime Qt Champion

    As silly as it may sound: Install the gstreamer development package



  • @SGaist - As I have mention above, gstreamer package already installed on my PC.
    Any idea why QT don’t recognize it?



  • @IL He 's not talking about the gstreamer package but rather libgstreamer-dev or something like that. Right?


  • Lifetime Qt Champion

    @raf924's right, the dev packages are needed



  • @SGaist Hi
    Sorry for the ignorance but can you tell the different between gstreamer package and gstreamer-dev package?
    Do I need here qt-gstreamer?

    Thanks!



  • @raf924 Hi
    I am running:
    ./configure -v -qt-xcb -opensource -confirm-license -gstreamer
    currently configuration failed for:
    GStreamer 0.10 auto-detection... ()
    Project ERROR: gstreamer-audio-0.10 development package not found
    GStreamer 0.10 disabled.

    also I can see that according to gstreamer.pro it required:
    gstreamer-0.10
    gstreamer-base-0.10
    gstreamer-audio-0.10
    gstreamer-video-0.10
    gstreamer-pbutils-0.10
    I have managed to install gstreamer-0.10 and gstreamer-base-0.10 but now I am stuck on audio and video.
    I am running QT on fedora 20.
    I cannot find gstreamer-audio/video using "yum install ... "
    What am I missing?
    Please advice for a solution.

    best regards, IL



  • @IL sudo yum install gstreamer-devel should do the trick



  • @raf924 Thanks!



Looks like your connection to Qt Forum was lost, please wait while we try to reconnect.