[VB]
objActiveDcam.Rate [= Value] [C/C++]
HRESULT get_Rate( long *pRate );
HRESULT put_Rate( long Rate );
Data Type [VB]
Float
Parameters [C/C++]
pRate [out,retval]
Pointer to the frame rate value
Rate [in]
The value of the frame rate
Return Values
S_OK
Success
E_FAIL
Failure.
E_INVALIDARG
The value is out of range
Example
This VB example sets the current frame rate to 15 fps:
Private SubForm_Load() ActiveDcam1.Rate = 15. End Sub
Remarks
DCAM compliant cameras support the following predefined frame rates: 1.875 fps, 3.75 fps, 7.5 fps, 15 fps, 30 fps, 60 fps. Additional frame rates can be provided by the camera manufacturer. A certain video Mode can only support certain frame rates. The list of rates available for the current video mode can be retrieved with GetRateList. If you use the property window of your development environment or ActiveDcam's property pages, the Rate property field will be presented as a list box containing all supported frame rates. If the property is set to a value which is not supported by the current mode, it will be reset to the nearest allowable frame rate.
Note that the Rate property is available only for the fixed video mode. If the current video mode is a partial scan one (Format 7), use PacketSize to modify the effective frame rate. For more information refer to "IIDC 1394-based Digital Camera Specification, Version 1.30" published by the 1394 Trade Association.
