IMFVideoPositionMapper interface

Maps a position on an input video stream to the corresponding position on an output video stream.

To obtain a pointer to this interface, call IMFGetService::GetService on the renderer with the service GUID MR_VIDEO_RENDER_SERVICE.

When to implement

Optionally, implement this interface if you write a custom mixer or presenter for the enhanced video renderer (EVR).

When to use

Use this interface to determine where a point in the video window lies relative to a substream within the video. For example, you can calculate whether a mouse click occurs within a particular substream.

Members

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

Methods

The IMFVideoPositionMapper interface has these methods.

MethodDescription
MapOutputCoordinateToInputStream

Maps output image coordinates to input image coordinates.

 

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

Header

Evr.h

Library

Strmiids.lib

See also

Enhanced Video Renderer
Media Foundation Interfaces

 

 

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