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evrconfig-allowscaling.md

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description ms.assetid title ms.topic ms.date
Alllows the Enhanced Video Renderer (EVR) to mix the video within a rectangle that is smaller than the output rectangle, and then scale the result.
7e3b8fe1-959b-4391-a715-5d5a7a7dda39
EVRConfig_AllowScaling attribute (Uuids.h)
reference
05/31/2018

EVRConfig_AllowScaling attribute

Alllows the Enhanced Video Renderer (EVR) to mix the video within a rectangle that is smaller than the output rectangle, and then scale the result.

Data type

UINT32

Get/set

To get this attribute, call IMFAttributes::GetUINT32.

To set this attribute, call IMFAttributes::SetUINT32.

Remarks

This attribute can be set on the EVR media sink. To set the attribute, use QueryInterface to query the EVR media sink for the IMFAttributes interface.

Setting this attribute has the same effect as setting the MFVideoRenderPrefs_AllowScaling flag on the EVR. See MFVideoRenderPrefs for a description of this flag.

The GUID constant for this attribute is exported from strmiids.lib.

Requirements

Requirement Value
Minimum supported client
 Windows 7 [desktop apps only]
Minimum supported server
 Windows Server 2008 R2 [desktop apps only]
Header
Uuids.h

See also

Alphabetical List of Media Foundation Attributes

EVR Attributes

Video Quality Management