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Deplaying an application with plugin



  • Hello, I have realised an application using QtMultimedia. When I test it on debug mode all works fine, but not in release mode. I have the following error :

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

    So I search for the error an I find that the plugin mediaservices have not been loaded,
    I have created a subdirectory named plugins and i have put the mediaservice into it. But always the same error.
    How could i fix that?

    ps : sorry for my english i'm french



  • did you do all the things mentioned here ?

    http://qt-project.org/forums/viewthread/29185



  • No because I don't know how to do this.
    I have search for directshow.pro in my Qt folder but i did not find it.

    also for "recompile the plugin." I have to recompile it using Qt creator? or manually?


  • Lifetime Qt Champion

    Hi,

    First thing to check is this fine "wiki entry":http://qt-project.org/wiki/Deploy_an_Application_on_Windows to ensure you are starting the deployment right.

    Once that's done, and if still fails, then start your application from the command line with QT_DEBUG_PLUGINS=1 and see what goes wrong



  • bq. First thing to check is this fine wiki entry [qt-project.org] to ensure you are starting the deployment right.

    I have already do this.

    And the debug mode produces the same error :
    defaultServiceProvider::requestService(): no service found for – “org.qt-project.qt.mediaplayer”


  • Lifetime Qt Champion

    Activating that environment variable won't change the outcome, however you should analyze the output of your application to see which plugin fails and for what reason



  • I have not understand where i have to put the QT_DEBUG_PLUGINS=1 line
    Please tell me about it
    thanks


  • Moderators

    Hi,

    [quote author="Toxiik" date="1422875572"]I have created a subdirectory named plugins and i have put the mediaservice into it.[/quote]You should not have a subdirectory named "plugins". Go to SGaist's link again and look at the diagram carefully (replace "imageformats" with "mediaservice").



  • I have removed my subdirectory but it always don't work.
    I have my .exe, my .dll and mediaservice
    But always the same error


  • Lifetime Qt Champion

    Again, start your application from the command line:
    call

    @set QT_DEBUG_PLUGINS=1@

    then

    @yourapplication.exe@



  • Thanks for your response, i have do that and the problem is not qtmultimedia.
    When I run myapp.exe with the good parameter it works fine.

    But when i associate a mp3 file with the myapp.exe and i try to run it, it fails.
    How can i get the path of the mp3 file that i have double clicked?

    Now i use QCoreApplication::arguments().at(1)



  • sorry for the double post, but i have resolved my problem, i have deleted all my built folder an rebuilt it and it works


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