MFCreateVideoMediaTypeFromSubtype function
Creates a partial video media type with a specified subtype.
Syntax
HRESULT MFCreateVideoMediaTypeFromSubtype(
_In_ const GUID *pAMSubtype,
_Out_ IMFVideoMediaType **ppIVideoMediaType
);
Parameters
- pAMSubtype [in]
-
Pointer to a GUID that specifies the subtype. See Video Subtype GUIDs.
- ppIVideoMediaType [out]
-
Receives a pointer to the IMFVideoMediaType interface. The caller must release the interface.
Return value
If this function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
This function creates a media type and sets the major type equal to MFMediaType_Video and the subtype equal to the value specified in pAMSubtype.
You can get the same result with the following steps:
- Call MFCreateMediaType. This function returns a pointer to the IMFMediaType interface.
- Set the MF_MT_MAJOR_TYPE attribute to MFMediaType_Video.
- Set the MF_MT_SUBTYPE attribute to the subtype.
Note Prior to Windows 7, this function was exported from evr.dll. Starting in Windows 7, this function is exported from mfplat.dll, and evr.dll exports a stub function that calls into mfplat.dll. For more information, see Library Changes in Windows 7.
Requirements
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Minimum supported client |
Windows Vista [desktop apps only] |
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Minimum supported server |
Windows Server 2008 [desktop apps only] |
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Header |
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Library |
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DLL |
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See also
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