Microsoft DirectX 9.0


This topic applies to Windows XP only.

The get_DecimateInput method queries whether the Video Mixing Renderer (VMR) is currently configured to decimate the video (that is, reduce the native video size) before processing it.

This method is currently not supported.


HRESULT get_DecimateInput(



[out] Pointer to a variable that receives one of the following values.

Value Description
VARIANT_TRUE The VMR is configured to decimate the video.
VARIANT_FALSE The VMR is not configured to decimate the video.

Return Value

If the method succeeds, it returns S_OK. If it fails, it returns an error code.


This property should be set to true when the native video stream is HDTV but the system monitor is set to a lower resolution. This prevents the VMR from doing unnecessary work by processing the video at high resolution and then shrinking it.

See Also