IltmfConvert::put_Preview

Summary

Adds or removes the preview graph for the convert graph.

Syntax

#include "ltmf.h"

Platform Syntax
C HRESULT IltmfConvert_put_Preview(pConvert, newVal)
C++ HRESULT put_Preview(newVal)

Parameters

IltmfConvert *pConvert

Pointer to an IltmfConvert interface.

VARIANT_BOOL 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.

Returns

Value Meaning
S_OK The function was successful.
<> S_OK An error occurred. Refer to the Error Codes or the HRESULT error codes in the MediaFoundation documentation.

Comments

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

Platforms

Win32, x64.

See Also

Functions

Topics

Example

For a C++ example, refer to IltmfConvert::put_Preview Example for C++.

Help Version 22.0.2022.6.24
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LEADTOOLS Media Foundation C API Help

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© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.