IMediaSample::IsPreroll method (strmif.h)

The IsPreroll method determines if this sample is a preroll sample. A preroll sample should not be displayed.


HRESULT IsPreroll();

Return value

Returns S_OK if the sample is a preroll sample. Otherwise, returns S_FALSE.


Preroll samples are processed but not displayed. They are located in the media stream before the displayable samples.


Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)
Library Strmiids.lib

See also

Error and Success Codes

IMediaSample Interface