Specifies an activation object that creates a custom video mixer for the enhanced video renderer (EVR) media sink.
If you are creating the EVR through an activation object, you can use this attribute to set a custom video mixer on the EVR. Use this attribute as follows:
- Call the MFCreateVideoRendererActivate function to create an activation object for the EVR. The function returns a pointer to the IMFActivate interface.
- Set this attribute on the IMFActivate pointer by calling IMFAttributes::SetUnknown. The value of the attribute is a pointer to an activation object implemented by the caller. The caller's activation object must expose the IMFActivate interface.
The GUID constant for this attribute is exported from mfuuid.lib.
Minimum supported client
|Windows Vista [desktop apps only]|
Minimum supported server
|Windows Server 2008 [desktop apps only]|
- Enhanced Video Renderer Attributes
- Activation Objects