IWMVideoForceKeyFrame::SetKeyFrame Method
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