CMediaSample.SetPreroll method
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The SetPreroll method specifies whether this sample is a preroll sample. A preroll sample should not be displayed. This method implements the IMediaSample::SetPreroll method.
Syntax
HRESULT SetPreroll(
BOOL bIsPreroll
);
Parameters
-
bIsPreroll
-
Boolean value that specifies whether this is a preroll sample. If TRUE, this is a preroll sample.
Return value
Returns S_OK.
Remarks
This method updates the CMediaSample::m_dwFlags member variable, which specifies the preroll property.
Requirements
| Requirement | Value |
|---|---|
| Header |
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| Library |
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