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Problem to deploy Qt app with QtMultimedia on Linux

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  • A Offline
    A Offline
    andreyc
    wrote on last edited by
    #2

    Do you have gstreamer-0.10 installed on Ubuntu-14.04?

    By default it is not included so you need to take care about it.

    QtMultimedia uses gstreamer-0.10 on linux.

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    • H Offline
      H Offline
      helenebro
      wrote on last edited by
      #3

      Indeed, I think gstreamer-0.10 was no install.
      Now, I have install gstreamer-0.10 with lines :

      bq. sudo add-apt-repository ppa:gstreamer-developers/ppa
      sudo apt-get update
      sudo apt-get install gstreamer1.0*

      After, I have still the same problem. How can I see if gstreamer-0.10 is correctly installed ?

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      • A Offline
        A Offline
        andreyc
        wrote on last edited by
        #4

        You have installed gstreamer-1.0.
        Ubuntu-14.04 does not have gstreamer-0.10 in its default repositories.

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        • H Offline
          H Offline
          helenebro
          wrote on last edited by
          #5

          Yes I have seen there are problem with ubuntu 14.04.
          What can I do ? Install others packages ? Change version of ubuntu ?

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          • A Offline
            A Offline
            andreyc
            wrote on last edited by
            #6

            Looks like I was wrong about gstreamer-0.10 in Ubuntu-14.04
            https://launchpad.net/ubuntu/trusty/+search?text=gstreamer0.10
            Try
            @
            apt-cache search gstreamer0.10
            @
            and if it will find the packages then
            @
            sudo apt-get-install libgstreamer0.10-0 gstreamer0.10-ffmpeg gstreamer0.10-plugins-base gstreamer0.10-plugins-ugly gstreamer0.10-plugins-good gstreamer0.10-plugins-bad
            @
            add other gstreamer packages that you need to the list.

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            • H Offline
              H Offline
              helenebro
              wrote on last edited by
              #7

              Thank you to take time for my problem.
              I had already install all packages gstreamer0.10
              @apt-get install gstreamer0.10*@

              I have install several without succes to run my app.
              How I can be sure the problem comes to gstreamer and not something else ?

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              • A Offline
                A Offline
                andreyc
                wrote on last edited by
                #8

                I think you also need to install libgstreamer0.10-0
                You can use "GST_DEBUG":http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gst-running.html to control debug output from gstreamer
                @
                GST_DEBUG=4 ./app
                @

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                • H Offline
                  H Offline
                  helenebro
                  wrote on last edited by
                  #9

                  I have already instaledl libgstreamer0.10*
                  If I run my application with GST_DEBUG, I have the same message : "QtMultimedia is not installed".

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                  • JKSHJ Offline
                    JKSHJ Offline
                    JKSH
                    Moderators
                    wrote on last edited by
                    #10

                    Hi,

                    [quote author="helenebro" date="1406206379"] I have the same message : "QtMultimedia is not installed".[/quote]You also need to deploy Qt's QML libraries. Copy the folder <Qt>/qml/QtMultimedia/

                    Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

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                    • H Offline
                      H Offline
                      helenebro
                      wrote on last edited by
                      #11

                      Indeed, it works. Thank you.
                      I have a new problem but it seems easy to solve :
                      @libdeclarative_multimedia.so uses incompatible Qt library (5.3.1).@
                      I build my app with "Desktop Qt 5.3 GCC 64 bits".
                      On qml, I import QtMultimedia 5.0 (or 5.3)
                      I have copy the file on Qt/5.3/gcc_64/qml

                      Is there a different to 5.3 and 5.3.1 ?

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                      • JKSHJ Offline
                        JKSHJ Offline
                        JKSH
                        Moderators
                        wrote on last edited by
                        #12

                        Qt 5.3.1 is the latest version of Qt 5.3.

                        [quote]libdeclarative_multimedia.so uses incompatible Qt library (5.3.1)[/quote]Ubuntu contains older versions of Qt 5. Are you sure your app is linking to the correct versions of all the libraries? Use ldd to check.

                        Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

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                        • H Offline
                          H Offline
                          helenebro
                          wrote on last edited by
                          #13

                          It seems that I build my app with Qt 5.3 and I have had libraries on file Qt/5.3/gcc_64. The lib uses for QtMultimedia are 5.3.1 extensions.

                          I have succeed to run my app by using Qt 5.2.1 but I have a new problem with QtMultimedia.
                          When I run my app, I have the error

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

                          Files libQt5Multimedia.so.5, libQt5MultimediaQuick_p.so.5 and libQt5MultimediaWidgets.so.5 are on libs folder and I had copied QtMultimedia folder.

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                          • JKSHJ Offline
                            JKSHJ Offline
                            JKSH
                            Moderators
                            wrote on last edited by
                            #14

                            Does it work when you run your app in Qt Creator?

                            Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

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                            • H Offline
                              H Offline
                              helenebro
                              wrote on last edited by
                              #15

                              Yes, I have no problem on Qt Creator. I have also update the version of my development PC to Ubuntu 14.4 to check the problem doesn't come to this version.

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                              • JKSHJ Offline
                                JKSHJ Offline
                                JKSH
                                Moderators
                                wrote on last edited by
                                #16

                                That's good! :) Then you just need to deploy correctly. You are probably missing a multimedia plugin (check your plugins folder)

                                See "this page":http://qt-project.org/wiki/Deploy_an_Application_on_Windows for the correct folder structure (it's written for Windows, but it applies to Ubuntu too).

                                This blog has very good details on the deployment process, including Linux-specific descriptions:

                                • http://www.tripleboot.org/?p=138
                                • http://www.tripleboot.org/?p=536

                                Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

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                                • H Offline
                                  H Offline
                                  helenebro
                                  wrote on last edited by
                                  #17

                                  Thank you for the links. I use the method to clean my environment on my development comptuter (change Qt folder to QtHidden), and my app run correctly on this computer. I think it miss a library what is not on is folder.
                                  I have the tree :
                                  @Deployment/
                                  |____myApp
                                  |____myApp.sh
                                  |____libs/
                                  | |____libQt5Multimedia.so.5
                                  | |____libQt5MultimediaQuick_p.so.5
                                  | |libQt5MultimediaWidgets.so.5
                                  | |
                                  ...and other files given by ldd...
                                  |____platforms/
                                  | |___libqeglfs.so
                                  | |___libqlinuxfb.so
                                  | |___libqminimalegl.so
                                  | |___libqminimal.so
                                  | |___libqoffscreen.so
                                  | |___libqxcb.so
                                  |____QtMultimedia/
                                  | |___libdeclarative_multimedia.so
                                  | |___plugins.qmltypes
                                  | |___qmldir
                                  | |___Video.qml
                                  |____QtQuick.2/
                                  |___libqtquick2plugin.so
                                  |___plugins.qmltypes
                                  |___qmldir@

                                  Before to start app, I set LD_LIBRARY_PATH (export LD_LIBRARY_PATH=libs).
                                  Is it normal that ldd don't name multimedia files ?

                                  I have also test the method "Quick and dirty" of the first link (I have copy all files on Qt/Qt5.2/gcc_64/plugins, Qt/Qt5.2/gcc_64/qml and Qt/Qt5.2/gcc_64/lib) whitout succeed

                                  Further, I have checked gstreamer is correctly install on computer for the deployment. I have test some command gst-launch-1.0 wihout problem

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                                  • H Offline
                                    H Offline
                                    helenebro
                                    wrote on last edited by
                                    #18

                                    I have found a solution. I have directly install liqt5multumedia5-plugins on the target computer. i think it isn't the cleanest solution but it works.
                                    Thank you for your help

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                                    • M Offline
                                      M Offline
                                      masum
                                      wrote on last edited by
                                      #19

                                      I am also fetching same problem at windows environment (windows 8.1 64bit). When ever try to deploy app into android emulator then it show following errors.

                                      qrc:///demos/maroon/content/SoundEffect.qml:45 ((null)): qrc:///demos/maroon/content/SoundEffect.qml:45: Error: Qt.createQmlObject(): failed to create object:
                                      qrc:///demos/maroon/content/inline:1:1: module "QtMultimedia" is not installed

                                      Kind Regards

                                      Md. Rashidul Hasan
                                      Software Architect
                                      OnnoRokom Software Ltd.
                                      Cell: 8801836885252

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