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Topology Attributes
The following attributes apply to topologies.
| Attribute | Description |
|---|---|
| MF_TOPOLOGY_DXVA_MODE | Specifies whether the topology loader enables Microsoft DirectX Video Acceleration (DXVA) in the topology. |
| MF_TOPOLOGY_DYNAMIC_CHANGE_NOT_ALLOWED | Specifies whether the Media Session attempts to modify the topology when the format of a stream changes. |
| MF_TOPOLOGY_ENUMERATE_SOURCE_TYPES | Specifies whether the topology loader enumerates the media types provided by the media source. |
| MF_TOPOLOGY_HARDWARE_MODE | Specifies whether to include hardware-based transforms in the topology. |
| MF_TOPOLOGY_NO_MARKIN_MARKOUT | Specifies whether the pipeline trims samples. |
| MF_TOPOLOGY_PLAYBACK_FRAMERATE | Specifies the monitor refresh rate. |
| MF_TOPOLOGY_PLAYBACK_MAX_DIMS | Specifies the size of the destination window for video playback. |
| MF_TOPOLOGY_PROJECTSTART | Specifies the topology start time within the current segment, in 100-nanosecond units. |
| MF_TOPOLOGY_PROJECTSTOP | Specifies the topology stop time within the current segment, in 100-nanosecond units. |
| MF_TOPOLOGY_RESOLUTION_STATUS | Specifies the status of an attempt to resolve a topology. |
| MF_TOPOLOGY_START_TIME_ON_PRESENTATION_SWITCH | Specifies the start time for presentations that are queued after the first presentation. |
| MF_TOPOLOGY_STATIC_PLAYBACK_OPTIMIZATIONS | Enables static optimizations in the video pipeline. |
| MFT_FIELDOFUSE_UNLOCK_Attribute | Contains an IMFFieldOfUseMFTUnlock pointer, which is used to unlock an MFT with field-of-use restrictions. For more information, see Field of Use Restrictions. |
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