Timeline
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
Note
[Deprecated. This API may be removed from future releases of Windows.]
The timeline object manages all of the objects in a video editing project. To create this object, call CoCreateInstance. The class identifier is CLSID_AMTimeline.
To read Windows Media™ files, the application must provide a software certificate, also called a key. Register the application as a key provider through the timeline's IObjectWithSite interface. For more information, see Unlocking the Windows Media Format SDK.
The timeline object exposes the following interfaces:
- IAMSetErrorLog
- IAMTimeline
- IObjectWithSite
- IPersistStream
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