How to have QAudioDecoder decode audio in Windows environment?

kitfox

I'm trying to read in the raw data of an audio file. I'm getting the error

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

My web searches seem to be saying that this is related to the needed plugins not being found. Or that I need to build this using MSVC. I'm building inside of Qt Creator right now. What's the best way to solve this?

jsulm

@kitfox Do you start your app from QtCreator?
Can you set QT_DEBUG_PLUGINS before executing the app to get more information about not loaded plug-in and why it was not loaded?

kitfox

How do I set it?

SGaist

Hi,

In the Run part for the Project Panel.

kitfox

This post is deleted!

kitfox

kitfox 14 minutes ago

I set this by adding an entry to the Run Environment (I think this is where its supposed to be put).

org.qt-project.qt-audiodecode does not appear anywhere in the list.

When I run my program I get the following printed to Application Output:

09:08:17: Debugging starts
QFactoryLoader::QFactoryLoader() checking directory path "C:/Qt/5.12.2/mingw73_64/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/platforms/qdirect2d.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/platforms/qdirect2d.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "direct2d"
        ]
    },
    "archreq": 0,
    "className": "QWindowsDirect2DIntegrationPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("direct2d")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/platforms/qdirect2dd.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/platforms/qdirect2dd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "direct2d"
        ]
    },
    "archreq": 1,
    "className": "QWindowsDirect2DIntegrationPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/platforms/qdirect2dd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/platforms/qminimal.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/platforms/qminimal.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "archreq": 0,
    "className": "QMinimalIntegrationPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/platforms/qminimald.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/platforms/qminimald.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "archreq": 1,
    "className": "QMinimalIntegrationPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/platforms/qminimald.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/platforms/qoffscreen.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/platforms/qoffscreen.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "archreq": 0,
    "className": "QOffscreenIntegrationPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/platforms/qoffscreend.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/platforms/qoffscreend.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "archreq": 1,
    "className": "QOffscreenIntegrationPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/platforms/qoffscreend.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/platforms/qwindows.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/platforms/qwindows.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "windows"
        ]
    },
    "archreq": 0,
    "className": "QWindowsIntegrationPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("windows")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/platforms/qwindowsd.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/platforms/qwindowsd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "windows"
        ]
    },
    "archreq": 1,
    "className": "QWindowsIntegrationPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/platforms/qwindowsd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() checking directory path "D:/dev/github.com/blackears/dopeWeasel/build-DopeWeasel-Desktop_Qt_5_12_2_MinGW_64_bit-Release/release/platforms" ...
loaded library "C:/Qt/5.12.2/mingw73_64/plugins/platforms/qwindows.dll"
QFactoryLoader::QFactoryLoader() checking directory path "C:/Qt/5.12.2/mingw73_64/plugins/platformthemes" ...
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/platformthemes/qxdgdesktopportal.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/platformthemes/qxdgdesktopportal.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformThemeFactoryInterface.5.1",
    "MetaData": {
        "Keys": [
            "xdgdesktopportal",
            "flatpak",
            "snap"
        ]
    },
    "archreq": 0,
    "className": "QXdgDesktopPortalThemePlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("xdgdesktopportal", "flatpak", "snap")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/platformthemes/qxdgdesktopportald.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/platformthemes/qxdgdesktopportald.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformThemeFactoryInterface.5.1",
    "MetaData": {
        "Keys": [
            "xdgdesktopportal",
            "flatpak",
            "snap"
        ]
    },
    "archreq": 1,
    "className": "QXdgDesktopPortalThemePlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/platformthemes/qxdgdesktopportald.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() checking directory path "D:/dev/github.com/blackears/dopeWeasel/build-DopeWeasel-Desktop_Qt_5_12_2_MinGW_64_bit-Release/release/platformthemes" ...
QFactoryLoader::QFactoryLoader() checking directory path "C:/Qt/5.12.2/mingw73_64/plugins/styles" ...
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/styles/qwindowsvistastyle.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/styles/qwindowsvistastyle.dll, metadata=
{
    "IID": "org.qt-project.Qt.QStyleFactoryInterface",
    "MetaData": {
        "Keys": [
            "windowsvista"
        ]
    },
    "archreq": 0,
    "className": "QWindowsVistaStylePlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("windowsvista")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/styles/qwindowsvistastyled.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/styles/qwindowsvistastyled.dll, metadata=
{
    "IID": "org.qt-project.Qt.QStyleFactoryInterface",
    "MetaData": {
        "Keys": [
            "windowsvista"
        ]
    },
    "archreq": 1,
    "className": "QWindowsVistaStylePlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/styles/qwindowsvistastyled.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() checking directory path "D:/dev/github.com/blackears/dopeWeasel/build-DopeWeasel-Desktop_Qt_5_12_2_MinGW_64_bit-Release/release/styles" ...
loaded library "C:/Qt/5.12.2/mingw73_64/plugins/styles/qwindowsvistastyle.dll"
QFactoryLoader::QFactoryLoader() checking directory path "C:/Qt/5.12.2/mingw73_64/plugins/iconengines" ...
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/iconengines/qsvgicon.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/iconengines/qsvgicon.dll, metadata=
{
    "IID": "org.qt-project.Qt.QIconEngineFactoryInterface",
    "MetaData": {
        "Keys": [
            "svg",
            "svgz",
            "svg.gz"
        ]
    },
    "archreq": 0,
    "className": "QSvgIconPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("svg", "svgz", "svg.gz")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/iconengines/qsvgicond.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/iconengines/qsvgicond.dll, metadata=
{
    "IID": "org.qt-project.Qt.QIconEngineFactoryInterface",
    "MetaData": {
        "Keys": [
            "svg",
            "svgz",
            "svg.gz"
        ]
    },
    "archreq": 1,
    "className": "QSvgIconPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/iconengines/qsvgicond.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() checking directory path "D:/dev/github.com/blackears/dopeWeasel/build-DopeWeasel-Desktop_Qt_5_12_2_MinGW_64_bit-Release/release/iconengines" ...
QFactoryLoader::QFactoryLoader() checking directory path "C:/Qt/5.12.2/mingw73_64/plugins/imageformats" ...
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qgif.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qgif.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "gif"
        ],
        "MimeTypes": [
            "image/gif"
        ]
    },
    "archreq": 0,
    "className": "QGifPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("gif")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qgifd.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qgifd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "gif"
        ],
        "MimeTypes": [
            "image/gif"
        ]
    },
    "archreq": 1,
    "className": "QGifPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qgifd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qicns.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qicns.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "icns"
        ],
        "MimeTypes": [
            "image/x-icns"
        ]
    },
    "archreq": 0,
    "className": "QICNSPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("icns")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qicnsd.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qicnsd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "icns"
        ],
        "MimeTypes": [
            "image/x-icns"
        ]
    },
    "archreq": 1,
    "className": "QICNSPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qicnsd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qico.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qico.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "ico",
            "cur"
        ],
        "MimeTypes": [
            "image/vnd.microsoft.icon",
            "image/vnd.microsoft.icon"
        ]
    },
    "archreq": 0,
    "className": "QICOPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("ico", "cur")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qicod.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qicod.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "ico",
            "cur"
        ],
        "MimeTypes": [
            "image/vnd.microsoft.icon",
            "image/vnd.microsoft.icon"
        ]
    },
    "archreq": 1,
    "className": "QICOPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qicod.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qjpeg.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qjpeg.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "jpg",
            "jpeg"
        ],
        "MimeTypes": [
            "image/jpeg",
            "image/jpeg"
        ]
    },
    "archreq": 0,
    "className": "QJpegPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("jpg", "jpeg")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qjpegd.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qjpegd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "jpg",
            "jpeg"
        ],
        "MimeTypes": [
            "image/jpeg",
            "image/jpeg"
        ]
    },
    "archreq": 1,
    "className": "QJpegPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qjpegd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qsvg.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qsvg.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "svg",
            "svgz"
        ],
        "MimeTypes": [
            "image/svg+xml",
            "image/svg+xml-compressed"
        ]
    },
    "archreq": 0,
    "className": "QSvgPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("svg", "svgz")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qsvgd.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qsvgd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "svg",
            "svgz"
        ],
        "MimeTypes": [
            "image/svg+xml",
            "image/svg+xml-compressed"
        ]
    },
    "archreq": 1,
    "className": "QSvgPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qsvgd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtga.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtga.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "tga"
        ],
        "MimeTypes": [
            "image/x-tga"
        ]
    },
    "archreq": 0,
    "className": "QTgaPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("tga")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtgad.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtgad.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "tga"
        ],
        "MimeTypes": [
            "image/x-tga"
        ]
    },
    "archreq": 1,
    "className": "QTgaPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtgad.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtiff.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtiff.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "tiff",
            "tif"
        ],
        "MimeTypes": [
            "image/tiff",
            "image/tiff"
        ]
    },
    "archreq": 0,
    "className": "QTiffPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("tiff", "tif")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtiffd.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtiffd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "tiff",
            "tif"
        ],
        "MimeTypes": [
            "image/tiff",
            "image/tiff"
        ]
    },
    "archreq": 1,
    "className": "QTiffPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtiffd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwbmp.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwbmp.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "wbmp"
        ],
        "MimeTypes": [
            "image/vnd.wap.wbmp"
        ]
    },
    "archreq": 0,
    "className": "QWbmpPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("wbmp")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwbmpd.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwbmpd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "wbmp"
        ],
        "MimeTypes": [
            "image/vnd.wap.wbmp"
        ]
    },
    "archreq": 1,
    "className": "QWbmpPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwbmpd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwebp.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwebp.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "webp"
        ],
        "MimeTypes": [
            "image/webp"
        ]
    },
    "archreq": 0,
    "className": "QWebpPlugin",
    "debug": false,
    "version": 330752
}

Got keys from plugin meta data ("webp")
QFactoryLoader::QFactoryLoader() looking at "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwebpd.dll"
Found metadata in lib C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwebpd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "webp"
        ],
        "MimeTypes": [
            "image/webp"
        ]
    },
    "archreq": 1,
    "className": "QWebpPlugin",
    "debug": true,
    "version": 330752
}

"The plugin 'C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwebpd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a pluginQFactoryLoader::QFactoryLoader() checking directory path "D:/dev/github.com/blackears/dopeWeasel/build-DopeWeasel-Desktop_Qt_5_12_2_MinGW_64_bit-Release/release/imageformats" ...
loaded library "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qgif.dll"
loaded library "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qicns.dll"
loaded library "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qico.dll"
loaded library "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qjpeg.dll"
loaded library "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qsvg.dll"
loaded library "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtga.dll"
loaded library "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtiff.dll"
loaded library "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwbmp.dll"
loaded library "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwebp.dll"
QFactoryLoader::QFactoryLoader() checking directory path "C:/Qt/5.12.2/mingw73_64/plugins/accessible" ...
QFactoryLoader::QFactoryLoader() checking directory path "D:/dev/github.com/blackears/dopeWeasel/build-DopeWeasel-Desktop_Qt_5_12_2_MinGW_64_bit-Release/release/accessible" ...
mincore\com\oleaut32\dispatch\ups.cpp(2125)\OLEAUT32.dll!00007FFC5CEB3C4B: (caller: 00007FFC5CEB3DC2) ReturnHr(1) tid(2484) 8002801D Library not registered.
QFactoryLoader::QFactoryLoader() checking directory path "C:/Qt/5.12.2/mingw73_64/plugins/accessiblebridge" ...
QFactoryLoader::QFactoryLoader() checking directory path "D:/dev/github.com/blackears/dopeWeasel/build-DopeWeasel-Desktop_Qt_5_12_2_MinGW_64_bit-Release/release/accessiblebridge" ...
QLibraryPrivate::unload succeeded on "C:/Qt/5.12.2/mingw73_64/plugins/styles/qwindowsvistastyle.dll" 
QLibraryPrivate::unload succeeded on "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qgif.dll" 
QLibraryPrivate::unload succeeded on "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qicns.dll" 
QLibraryPrivate::unload succeeded on "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qico.dll" 
QLibraryPrivate::unload succeeded on "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qjpeg.dll" 
QLibraryPrivate::unload succeeded on "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qsvg.dll" 
QLibraryPrivate::unload succeeded on "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtga.dll" 
QLibraryPrivate::unload succeeded on "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qtiff.dll" 
QLibraryPrivate::unload succeeded on "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwbmp.dll" 
QLibraryPrivate::unload succeeded on "C:/Qt/5.12.2/mingw73_64/plugins/imageformats/qwebp.dll" 
QLibraryPrivate::unload succeeded on "C:/Qt/5.12.2/mingw73_64/plugins/platforms/qwindows.dll" 
09:09:05: Debugging has finished