IAMTimelineEffect Interface

The IAMTimelineEffect interface provides methods for manipulating audio and video effects in DirectShow Editing Services (DES). An effect can be added to any timeline object that exposes the IAMTimelineEffectable interface. To set properties on an effect, use the IPropertySetter interface.

The DES effect object is actually a wrapper for one of two other objects:

• For audio effects, any DirectShow audio effect filter.
• For video effects, and 1-input DirectX Transform object.

Microsoft no longer supports the development of third-party DirectX Transform objects.

To specify the filter or DirectX Transform object for an effect, call the IAMTimelineObj::SetSubObjectGUID method.

To create an effect object, call IAMTimeline::CreateEmptyNode with the value TIMELINE_MAJOR_TYPE_EFFECT. You can query the returned IAMTimelineObj pointer for the IAMTimelineEffect interface.

In addition to the methods inherited from IUnknown, the IAMTimelineEffect interface exposes the following method.

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

• Working with Effects and Transitions