IMediaSample::IsPreroll method (strmif.h)
IsPreroll method determines if this sample is a preroll sample. A preroll sample should not be displayed.
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]|
|Header||strmif.h (include Dshow.h)|