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IMFVideoMixerControl interface (evr.h)

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Controls how the Enhanced Video Renderer (EVR) mixes video substreams. Applications can use this interface to control video mixing during playback.

The EVR mixer implements this interface. To get a pointer to the interface, call IMFGetService::GetService. The service identifier GUID is MR_VIDEO_MIXER_SERVICE. Call GetService on any of the following objects:

  • The Media Session, if the topology contains an instance of the EVR.
  • The EVR media sink.
  • The DirectShow EVR filter.
  • The EVR mixer.
If you implement a custom mixer for the EVR, the mixer can optionally expose this interface as a service.

Inheritance

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

Methods

The IMFVideoMixerControl interface has these methods.

 
IMFVideoMixerControl::GetStreamOutputRect

Retrieves the position of a video stream within the composition rectangle.
IMFVideoMixerControl::GetStreamZOrder

Retrieves the z-order of a video stream.
IMFVideoMixerControl::SetStreamOutputRect

Sets the position of a video stream within the composition rectangle.
IMFVideoMixerControl::SetStreamZOrder

Sets the z-order of a video stream.

Requirements

   
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Target Platform Windows
Header evr.h

See also

Enhanced Video Renderer

Media Foundation Interfaces