Macromedia flash media server 2-client-side actionscript language reference for flash media server 2 ユーザーズマニュアル

Client-Side ActionScript Language Reference

Example

The following example sends messages to the Output panel 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);