IAMTimelineGroup::SetPreviewMode
| Microsoft DirectShow 9.0 |
IAMTimelineGroup::SetPreviewMode
The SetPreviewMode method sets the preview mode for the group.
Syntax
HRESULT SetPreviewMode(
BOOL fPreview
);
Parameters
fPreview
Boolean value that specifies the preview mode. If TRUE, the group is in preview mode. If FALSE, the group is in authoring mode.
Return Value
Returns S_OK.
Remarks
In preview mode, frames are dropped during slow effects or transitions to keep the video synchronized with the audio. The video might look choppy as a result. In authoring mode, every frame is rendered. Authoring mode is appropriate for writing files; for on-screen preview, the video might be out of sync with the audio.
Requirements
Header: Include Qedit.h. This header file is not compatible with Microsoft® Direct3D® headers later than version 7.
Library: Use strmiids.lib.
See Also