| Microsoft DirectX 9.0 |
The IVMRAspectRatioControl interface controls whether the Video Mixing Renderer Filter 7 (VMR-7) preserves the aspect ratio of the source video. This interface is available when the VMR-7 is operating in either windowed or windowless modes. In windowless mode, the same functionality is provided by the IVMRWindowlessControl interface.
In addition to the methods inherited from IUnknown, the IVMRAspectRatioControl interface exposes the following methods.
| Method | Description |
| GetAspectRatioMode | Queries whether the VMR will preserve the aspect ratio of the source video. |
| SetAspectRatioMode | Specifies whether the VMR will preserve the aspect ratio of the source video. |