Supported by...


All USB Pixelink cameras. 


Description


This read-only feature allows the user to query the camera to see what frame rate the camera will use while streaming image data. This value is generally the same as FEATURE_FRAME_RATE, but will be of a lesser value if the user is controlling the frame rate (IE, FEATURE_FRAME_RATE is enabled) and one of the following conditions is true:

  • The current camera exposure is preventing the camera from achieving the frame rate requested by FEATURE_FRAME_RATE or 
  • FEATURE_BANDWIDTH_LIMIT is enabled, and its current value is preventing the camera from achieving the frame rate requested by FEATURE_FRAME_RATE


API Control


PxLGetFeature


Feature
Number of Params
Parameters
Units
Restrictions
FEATURE_ACTUAL
_FRAME_RATE

1
fValue
frames per second
N/A


Feature Flags


Camera
Presence
Read Only
Auto
Manual
One-time Auto
Off
Settable while
streaming

Persistable
All USB3 cameras
Yes
Yes
NoNo
No
No
N/A
No


Parameters

Camera
Parameter
Unit
Type
Min
Max
Default
Step Size
All USB3
Actual Frame
Millions of bits per second
Absolute

Will never be greater than
Same value as
Same value as