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c++qtaudioqtmultimediaqmediaplayer

Qt doesn't play sound on other devices

All I want to do write a programm in Qt that plays a simple .wav file. This works perfectly on the PC where my Qt runs, but whenever I want to run the program on a different computer there is no sound. I couldn't find any solution for this problem anywhere yet.

This is what I tried so far:

  • different libraries: QSound, QSoundEffect, QMediaPlayer
  • implement the QT += multimedia in the .pro file (of course)
  • make sure that the filepath was correct (even with a absolute path):

QFile dir("C:/Sounds/countdown3.wav"); if(dir.exists()){ ui->labelSound->setText("File found!"); ui->pushButtonPlay->setEnabled(true); ui->labelplay->setEnabled(true); ui->pushButton->setEnabled(false); } else ui->labelSound->setText("File not available!");

(When I rename the file I get the "File not available!" message, so this works.)

To deploy the program from my pc to my laptop, I put the following into a folder:

  • PlaySound.exe
  • platforms/qwindows.dll
  • icudt53.dll
  • icuin53.dll
  • icuuc53.dll
  • libgcc_s_dw2-1.dll
  • libstdc++-6.dll
  • libwinpthread-1.dll
  • Qt5Core.dll
  • Qt5Gui.dll
  • Qt5Multimedia.dll
  • Qt5Network.dll
  • Qt5Widgets.dll

and the "Sounds" folder with countdown3.wav to the C:/ -drive. Still no sound :(

What am I missing?

I hope you can help me!

Solution

  • The audio plugins folder: [Qt-Installation]\5.4\msvc2013\plugins\audio

    1. audio\qtaudio_windows.dll what you need
    2. audio\qtaudio_windowsd.dll is the debug library
    3. audio\qtaudio_windowsd.pdb symbols

    You don't need to deploy the last two.