EVRConfig_AllowDropToHalfInterlace attribute

Allows the Enhanced Video Renderer (EVR) to improve performance by skipping the second field of every interlaced frame.

Data type



To get this attribute, call IMFAttributes::GetUINT32.

To set this attribute, call IMFAttributes::SetUINT32.


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 MFVideoMixPrefs_AllowDropToHalfInterlace flag on the EVR. See MFVideoMixPrefs for a description of this flag.

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


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

See also

Alphabetical List of Media Foundation Attributes

EVR Attributes

Video Quality Management