Specifies the preferred output format for an encoder.
*** stored as **IUnknown*
DECLSPEC_SELECTANY GUID MFT_PREFERRED_OUTPUTTYPE_Attribute = {0x7e700499,0x396a,0x49ee,{0xb1,0xb4,0xf6,0x28,0x2,0x1e,0x8c,0x9d} }
To get this attribute, call IMFAttributes::GetUnknown
To set this attribute, call IMFAttributes::SetUnknown
This attribute can be set on the activation object returned by the MFCreateTransformActivate function. The attribute applies only when the activation object is configured to create an encoder. The value of the attribute is a media type. The activation object sets this output type on the encoder.
The GUID constant for this attribute is exported from mfuuid.lib.
Header: Declared in mftransform.h.