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IWMVideoForceKeyFrame::SetKeyFrame Method

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Specifies that the current frame will be encoded as a key frame.

Syntax

HRESULT SetKeyFrame();

Parameters

This method has no parameters.

Return Value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code Description
S_OK

The method succeeded.

 

Remarks

To force the encoder to make the current frame a key frame, call this method before calling IMediaObject::ProcessOutput or IMFTransform::ProcessOutput.

Each call to this method applies to a single frame. After processing this frame, the encoder resumes automatically assigning key frames (bounded by the maximum key frame distance).

Requirements

Minimum supported client

 Windows XP

Minimum supported server

 Windows Server 2003

Header

 Wmcodecdsp.h

See Also

IWMVideoForceKeyFrame Interface

 

 

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Build date: 4/7/2010