Method SetBackgroundColor

Source/VideoProcessor.h:287–287

	STDMETHODIMP SetFilteringValue(DWORD dwProperty, DXVA2_Fixed32 *pValue) { return E_NOTIMPL; }
	STDMETHODIMP GetBackgroundColor(COLORREF *lpClrBkg);
	STDMETHODIMP SetBackgroundColor(COLORREF ClrBkg) { return E_NOTIMPL; }

	// IMFVideoMixerBitmap
	STDMETHODIMP ClearAlphaBitmap() override;