References ▼
This is the interface for the LEAD Screen Capture Encoder.
| Type | Name | Description |
|---|---|---|
| long | KeyFrameSpace | Gets or sets the number of frames between key frames (key frame spacing). For example, if the rate is 5, then a key frame is taken every 5 frames. If the value is 0, then the first frame is the only key frame in the video. |
| BYTE | QFactor | Gets or sets the quality factor for compression. The value range is between 1 and 9. Use 1 for fast compression and 9 for high compression. |
| VARIANT_BOOL | IsLEADInputPinConnected | Read only; returns TRUE if the filters input pin is connected. |
| VARIANT_BOOL | IsLEADOutputPinConnected | Read only; returns TRUE if the filters output pin is connected. |
| long | InWidth | Read only; the input stream width. |
| long | InHeight | Read only; the input stream height. |
| long | OutWidth | Read only; the output stream width. |
| long | OutHeight | Read only; the output stream height. |
| long | InBits | Read only; the input stream bits per pixel. |
| long | OutBits | Read only; the output stream bits per pixel. |
Resets the filter properties to their default values.
Calling this method can cause the filter to reconnect its output pin.
| Return | Description |
|---|---|
| S_OK | Successful. |
| < 0 | An error occurred. |
| VFW_E_WRONG_STATE | The filter is in the wrong state. |
Forces the frame at the specified position to be a key frame.
The zero based number (position) of the frame to compress as a key frame. Use -1 to make the next passing frame a key frame. Valid values range between -1 and the total number of frames in the stream less one. Note that the filter do not know the total number of frames in the stream; so a number greater than the total number of frames in the stream will be accepted but will have no effect since it will not be reached.
The method will return S_FALSE if the frame at the specified position has already been compressed.
| Return | Description |
|---|---|
| S_OK | Successful. |
| Error code | Otherwise. |