QSoundEffect not working in Qt 6.4.2 windows 10

Kaguro

Hi Guys i would like to play a soundeffect with the QSoundEffect but when i tried in this way:

QSoundEffect *soundEffect = new QSoundEffect();
soundEffect->setSource(QUrl("D:/QtProjectver200/Android_alarm/RES/alligator3.wav"));
soundEffect->setLoopCount(QSoundEffect::Infinite);
soundEffect->setVolume(50);
soundEffect->play();

And the audio is not playing. The error what the Qt write out:
QSoundEffect(qaudio): Error decoding source d:/QtProjectver200/Android_alarm/RES/alligator3.wav

Thanks for your help!

Kaguro

I download the wav file from here:
https://www.freesoundeffects.com/free-track/alligator3-89353/

JonB

@Kaguro

Make sure that is the correct path: if it is not QSoundEffect still gives this (somewhat misleading) error message. Use e.g. QFile::exists() to verify.
I don't know how this works on Windows, but do you have the necessary decoder for .wav files?
have you tried with another file in a different path? Have you tried with something other than a .wav file?

Kaguro

@JonB

Yes the QFile::exists() returns true. I tried this way now (the file is in the build folder):

    effect.setSource(QUrl::fromLocalFile("engine.wav"));
    effect.setLoopCount(QSoundEffect::Infinite);
    effect.setVolume(0.25f);
    effect.play();

The new error is: qt.multimedia.audiooutput: Failed to set up resampler

Necessary decoder? I don't know what it is, I didn't add anything other than the main QT. I gave to add some decoder?
Yes I tried with some different paths and i tried with .OGG file too.

JonB

@Kaguro

Yes, setSource(QUrl::fromLocalFile(...)) looks like the correct way to specify a local file.
qt.multimedia.audiooutput: Failed to set up resampler: Google for exactly that phrase. https://stackoverflow.com/questions/74500509/failed-to-setup-resampler-when-starting-qaudiosink tells you there is a Qt 6.4.x bug for exactly this, refers you to https://bugreports.qt.io/browse/QTBUG-108383 and tells you what to do. The Qt bug report tells you it was fixed in 6.4.3 but not 6.4.2.