ILMVFrameRateCtrl Interface
This is the interface for the LEAD Video Frame Rate Controller Filter.
Interface Properties:
|
Type |
Name |
Description |
|
VARIANT_BOOL |
Enable |
Set to VARIANT_TRUE to enable the filter. If set to VARIANT_FALSE, the filter will pass the video stream as is, without changing the frame rate. |
|
double |
FrameRate |
Sets or gets the desired output frame rate, in frames per second. |
|
double |
InputFrameRate |
(Read only) The input (original) frame rate, in frames per second. |
|
VARIANT_BOOL |
ChangeStreamLength |
If set to VARIANT_TRUE, the filter will change the duration of the video stream by changing the frame rate as follows: Actual output rate = Selected rate * (Selected rate / Input rate). The video will play slower or faster according to the selected rate. If set to VARIANT_FALSE, the video plays at the normal speed and only the frame rate is changed. |
Methods:
HRESULT ResetToDefaults()
Description:
Resets the filter properties to their default values. Calling this method might cause the filter to reconnect its output pin.
Comments:
The method will fail if the filter is in the running state.
Returns:
|
S_OK |
Success |
|
VFW_E_WRONG_STATE |
The filter is in the wrong state. |