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The Timeline

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Microsoft DirectShow 9.0

The Timeline

The timeline exposes the IAMTimeline interface. This interface contains methods for setting properties on the timeline; for adding groups to the timeline; and for creating timeline objects, such as groups, tracks, and sources. To create a new timeline, call the standard CoCreateInstance function as follows:

IAMTimeline *pTL = NULL;
hr = CoCreateInstance(CLSID_AMTimeline, NULL, CLSCTX_INPROC_SERVER, 
        IID_IAMTimeline, (void**)&pTL);

The new timeline is empty. At this point you can either load an existing project file (see Loading and Previewing a Project), or build up the timeline by creating and inserting new objects (see Constructing a Timeline).