description	ms.assetid	title	ms.topic	ms.date
Specifies a window for the Media Engine to apply Output Protection Manager (OPM) protections.	E5271D72-FE16-4D28-9BBA-1440C7CE0921	MF_MEDIA_ENGINE_OPM_HWND attribute (Mfmediaengine.h)	reference	05/31/2018

MF_MEDIA_ENGINE_OPM_HWND attribute

Specifies a window for the Media Engine to apply Output Protection Manager (OPM) protections.

Data type

HWND stored as UINT64

This attribute is used with the IMFMediaEngineClassFactory::CreateInstance method to initialize the Media Engine.

To enable OPM protections for video playback, the application must do one of the following:

Set the MF_MEDIA_ENGINE_PLAYBACK_HWND attribute when creating the Media Engine.
Set the MF_MEDIA_ENGINE_OPM_HWND attribute when creating the Media Engine.
Call IMFMediaEngineProtectedContent::SetOPMWindow at any point after creating the Media Engine, but before protected content is displayed.

Requirement	Value
Minimum supported client	Windows 8 [desktop apps \| UWP apps]
Minimum supported server	Windows Server 2012 [desktop apps \| UWP apps]
Header	Mfmediaengine.h