IVMRDeinterlaceControl::SetDeinterlaceMode method (strmif.h)

The SetDeinterlaceMode method sets the deinterlacing mode for the specified video stream.


HRESULT SetDeinterlaceMode(
  [in] DWORD  dwStreamID,
  [in] LPGUID lpDeinterlaceMode


[in] dwStreamID

Index of the video stream to set. To set all streams, use the value 0xFFFFFFFF.

[in] lpDeinterlaceMode

Pointer to a GUID that specifies the deinterlacing mode. To turn off deinterlacing, use the value GUID_NULL.

Return value

Returns an HRESULT value. Possible values include the following:

Return code Description
Invalid stream number.
NULL pointer argument.
The VMR is not in mixer mode.


If the application does not specify the mode, the VMR defaults to the first mode reported by the driver. In either case, if the VMR cannot use the preferred mode, it falls back to another mode as specified in the IVMRDeinterlaceControl::SetDeinterlacePrefs method.

The SetDeinterlaceMode method is effective only for new connections made to the VMR. Some deinterlacing modes require additional reference samples; the exact number depends on the mode. The VMR allocates surfaces for these additional samples. The client must set the deinterlace mode before the surfaces have been allocated. Surface allocation occurs after any of the following:

  • Pin connections, including dynamic reconnections
  • Dynamic format changes (the upstream filter calls IPin::ReceiveConnection to specify a new format)
  • Resolution changes
  • Monitor changes


Minimum supported client Windows XP with SP1 [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)
Library Strmiids.lib

See also

Error and Success Codes

IVMRDeinterlaceControl Interface


Using the Video Mixing Renderer