MF_ACTIVATE_CUSTOM_VIDEO_MIXER_ACTIVATE attribute
Specifies an activation object that creates a custom video mixer for the enhanced video renderer (EVR) media sink.
Data type
IUnknown*
Remarks
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.
If you set this attribute, the EVR calls IMFActivate::ActivateObject to create the custom video mixer. The video mixer must expose the IMFTransform interface.
The GUID constant for this attribute is exported from mfuuid.lib.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2008 [desktop apps only] |
| Header |
|
See also
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