MEContentProtectionMessage event

Raised by a pipeline component when the configuration changes for one of the output protection schemes. This event applies only to protected content.

Event values

Possible values retrieved from IMFMediaEvent::GetValue include the following.



No event data.


All trusted outputs must handle this event. Media Foundation transforms (MFTs) receive this event through the IMFTransform::ProcessEvent method. Media sinks receive this event through the IMFStreamSink::PlaceMarker method.

The trusted output must apply the policy changes or return the error code MF_E_POLICY_UNSUPPORTED.

The event data and attributes depend on the content protection system in use.


Minimum supported client

Windows Vista [desktop apps | Windows Store apps]

Minimum supported server

Windows Server 2008 [desktop apps | Windows Store apps]


Mfobjects.h (include Mfidl.h)

See also

Media Foundation Events