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<p class="MsoNormal"><span lang="EN-GB">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I’m trying to use mfvideosrc on my QT app but when I use “GstElement * source<span style="color:silver">
</span><span style="color:#AAAAAA">=</span><span style="color:silver"> </span>gst_element_factory_make("mfvideosrc", "source");” to create the element I receive the following errors<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">2020-11-04 08:34:17.966 50A4 [OutputProtectionManager] Error: ..\..\..\..\..\runtime\src\mft\mft-framework\MFTMerits.cpp(562):StartInitializationDX11() - D3D11CreateDevice failed with HRESULT(0x887A0002)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">2020-11-04 08:34:18.926 50A4 [OutputProtectionManager] Error: ..\..\..\..\..\runtime\src\mft\mft-framework\MFTMerits.cpp(327):StartInitializationDXVA() - VideoDecoder Execute failed with HRESULT(0x80004005)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Looking at the Microsoft documentation the errors meaning are<o:p></o:p></span></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo1"><span lang="EN-GB">DXGI_ERROR_NOT_FOUND 0x887A0002<o:p></o:p></span></li></ol>
<p class="MsoNormal" style="text-indent:35.4pt"><span lang="EN-GB">When calling IDXGIObject::GetPrivateData, the GUID passed in is not recognized as one previously passed to IDXGIObject::SetPrivateData or IDXGIObject::SetPrivateDataInterface. When calling IDXGIFactory::EnumAdapters
or IDXGIAdapter::EnumOutputs, the enumerated ordinal is out of range.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:35.4pt"><span lang="EN-GB"><o:p> </o:p></span></p>
<ol style="margin-top:0cm" start="2" type="1">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo1"><span lang="EN-GB">E_FAIL (0x80004005)
<o:p></o:p></span></li></ol>
<p class="MsoListParagraph"><span lang="EN-GB">Attempted to create a device with the debug layer enabled and the layer is not installed.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Pipeline is then linked with no errors but my appsink callbacks are never called.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I’ve been using this same app with ksvideosrc with no problem<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I checked this plugin works with no errors from command line with the following command:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">gst-launch-1.0.exe -v mfvideosrc ! queue ! autovideosink<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Any idea what can be the reason of those errors?<o:p></o:p></span></p>
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