#include "ltmf.h"

C Syntax

HRESULT IltmfConvert_put_Preview(pConvert, newVal)

C++ Syntax

HRESULT put_Preview(newVal)

IltmfConvert *pConvert;

pointer to an interface



Adds or removes the preview graph for the convert graph.

Parameter Description
pConvert Pointer to an IltmfConvert interface.
newVal Flag that indicates whether to add or remove the preview graph from the convert graph. Possible values are:
  Value Meaning
  VARIANT_TRUE Add the preview graph.
  VARIANT_FALSE Remove the preview graph. This is the default value.



The function was successful.

<> S_OK

An error occurred. Refer to the Error Codes or the HRESULT error codes in the MediaFoundation documentation.


Adding the preview topology branch in the convert topology will enable previewing the stream while converting.

To add or remove the preview node, the convert session must be in the stopped state.

Required DLLs and Libraries


For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.


Win32, x64

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