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176 Chapter 2: ActionScript Language Reference

Camera.bandwidth

Availability

Flash Player 6.

Usage

active_cam.bandwidth:Number

Description

Read-only property; an integer that specifies the maximum amount of bandwidth the current

outgoing video feed can use, in bytes. A value of 0 means that Flash video can use as much

bandwidth as needed to maintain the desired frame quality.

To set this property, use

Camera.setQuality().

Example

The following example changes the maximum amount of bandwidth used by the camera feed.

Create a new video instance by selecting New Video from the Library options menu. Add an

instance to the Stage and give it the instance name

my_video. Add a NumericStepper component

instance to the Stage and give it the instance name

bandwidth_nstep. Then add the following

ActionScript to Frame 1 of the Timeline:

var bandwidth_nstep:mx.controls.NumericStepper;

var my_video:Video;

var my_cam:Camera = Camera.get();

my_video.attachVideo(my_cam);

this.createTextField("bandwidth_txt", this.getNextHighestDepth(), 0, 0, 100,

22);

bandwidth_txt.autoSize = true;

this.onEnterFrame = function() {

bandwidth_txt.text = "Camera is currently using "+my_cam.bandwidth+" bytes

("+Math.round(my_cam.bandwidth/1024)+" KB) bandwidth.";

};

bandwidth_nstep.minimum = 0;

bandwidth_nstep.maximum = 128;

bandwidth_nstep.stepSize = 16;

bandwidth_nstep.value = my_cam.bandwidth/1024;

function changeBandwidth(evt:Object) {

my_cam.setQuality(evt.target.value*1024, 0);

}

bandwidth_nstep.addEventListener("change", changeBandwidth);