IMediaSample::SetPreroll method (strmif.h)

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.

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, or an HRESULT value indicating the cause of the error.

Requirements

See also

Error and Success Codes

IMediaSample Interface

IMediaSample::IsPreroll