MACROMEDIA FLEX-FLEX ACTIONSCRIPT LANGUAGE Reference page 509

•
To determine the amount of motion the camera is currently detecting, use the
Camera.activityLevel
Motion sensitivity values correspond directly to activity values. Complete lack of motion is an
activity value of 0. Constant motion is an activity value of 100. Your activity value is less than
your motion sensitivity value when you're not moving; when you are moving, activity values
frequently exceed your motion sensitivity value.
This method is similar in purpose to
to specify when the
a significantly different impact on publishing streams:
•
Microphone.setSilenceLevel()
is considered silent, no audio data is sent. Instead, a single message is sent, indicating that
silence has started.
•
Camera.setMotionLevel()
usage. Even if a video stream does not detect motion, video is still sent.
Example
The following example writes to the log file when video activity starts or stops. Change the
motion sensitivity value of 30 to a higher or lower number to see how different values affect
motion detection.
// Assumes a Video object named "myVideoObject" is on the Stage
active_cam = Camera.get();
x = 0;
function motion(mode) {
trace(x + ": " + mode);
x++;
}
active_cam.onActivity = function(mode) {
motion(mode);
}
active_cam.setMotionLevel(30, 500);
myVideoObject.attachVideo(active_cam);
See also
Camera.activityLevel
Camera.setQuality()
Availability
Flash Player 6.
Usage
active_cam.setQuality(bandwidth:Number, frameQuality:Number) : Void
property.
Microphone.setSilenceLevel()
event handler should be invoked. However, these methods have
onActivity
is designed to optimize bandwidth. When an audio stream
is designed to detect motion and does not affect bandwidth
,
Camera.motionLevel
,
Camera.motionTimeOut
; both methods are used
,
Camera.onActivity
Camera.setQuality() 509