Allocator Properties

The PROPSETID_ALLOCATOR_CONTROL property set contains properties related to controlling the allocation and operations of video port surfaces. User-mode filters, such as the Overlay Mixer, use PROPSETID_ALLOCATOR_CONTROL. The following table describes properties that are part of the PROPSETID_ALLOCATOR_CONTROL property set.

PROPSETID_ALLOCATOR_CONTROL KS properties Property description


Controls how a filter determines the number of video port overlay surfaces to allocate.


Controls the dimensions of the video port overlay surface.


Describes the capture capabilities of the video port.


Returns if the video port supports interleaved capture.