The MontiVision Rotate90 filter rotates the input video stream by 0, 90, 180 or 270 degrees. At rotation angles of 90 and 270 degrees, the width of the output video stream is equal to the height of the input video stream and vice versa. The rotation angle can be modified while the output pin is unconnected.
This MontiVision DirectShow Filter is used in combination with the MontiVision Smart Control in the Crop Video Sample Application.
| File: | Rotate90.ax |
| CLSID: | CLSID_MVRotate90 |
Interface
Supported COM Events
The filter supports following events through the IMVFilterEvents interface. Look at the filter events page for more information.
| Event |
Value |
Description |
| MV_ALGORITHM_START_EVENT |
0 |
A filter starts processing a video frame or sample. |
| MV_ALGORITHM_END_EVENT |
1 |
A filter finishes processing a video frame or sample. |
MV Rotate90 Property Page
Uses the IMVRotate90 configuration interface.
| Rotation angle | Specifies the currently selected rotation angle for the output video. |