How to Get rotated image from camera with media foundation

[nhl100]

i use the MF_MT_VIDEO_ROTATION attribute，but it does not take effect. The process is as follows:
1、hr = m_pReader->GetNativeMediaType(
(DWORD)MF_SOURCE_READER_FIRST_VIDEO_STREAM,
i,
&pType
);
2、hr = pType->SetUINT32(MF_MT_VIDEO_ROTATION, MFVideoRotationFormat_90);
3、hr = m_pReader->SetCurrentMediaType(
(DWORD)MF_SOURCE_READER_FIRST_VIDEO_STREAM,
NULL,
pType
);
4、hr = m_pReader->ReadSample(
(DWORD)MF_SOURCE_READER_FIRST_VIDEO_STREAM,
0,
NULL,
NULL,
NULL,
NULL
);

What's the problem?