ActionScript Flash - Webcam "onFrameChanged" event?

Question

I'm developing a Flash application that works with a web camera.
I want to analyze every frame of the video recording... which is the proper event listener?

This is my actual code:

private var video: Video;
private var webcam: Camera;

public function AugmentedReality() {
    webcam = Camera.getCamera();
    if (webcam != null) {
        webcam.setMode(WEB_CAMERA_WIDTH, WEB_CAMERA_HEIGHT, VIDEO_FRAME_RATE);
        video = new Video(VIDEO_WIDTH, VIDEO_HEIGHT);
        video.attachCamera(webcam);
        this.addChild(video);
        this.addEventListener(Event.ENTER_FRAME, handler);
    }
}

private function handler(aEvent : Event):void {
    // I don't want to use this handler,
    // it is called several times on the same frame if FPS is low
}

Lars Blåsjö Lars Blåsjö · Accepted Answer · 2012-01-15T17:36:16

I'm not sure what you mean by "analyze every frame of the video recording" but there is the ActivityEvent, for detecting that the camera image has changed since the previous frame:

http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/media/Camera.html#setMotionLevel

There is also quite a lot of work done in motion detection and motion tracking using Flash/ActionScript and the Camera object that you can find code examples for.

ActionScript Flash - Webcam "onFrameChanged" event?

1 Answers