IVMRImageCompositor interface (strmif.h)

The IVMRImageCompositor interface is implemented by the default compositor for the Video Mixing Renderer Filter 7 (VMR-7). It must also be implemented by any plug-in compositor that an application provides for the VMR-7. The VMR-7 calls the methods on this interface to inform the Compositor that it should composite the incoming video frames into a single output frame. Applications do not use this interface.

For the VMR-9, use the IVMRImageCompositor9 interface.


The IVMRImageCompositor interface inherits from the IUnknown interface. IVMRImageCompositor also has these types of members:


The IVMRImageCompositor interface has these methods.


The CompositeImage method composites the current frames available in each input stream.

The InitCompositionTarget method informs the compositor that a new composition target has been created.

The SetStreamMediaType method sets the media type for the input stream.

The TermCompositionTarget method informs the compositor that the current composition target is being replaced. Compositors should perform any necessary cleanup of the composition target in this method.


Minimum supported client Windows XP with SP1 [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)

See also

Using the Video Mixing Renderer