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copied!<p>Unfortunately i have no USB camera to test this with (only got insight).</p> <p>You could try ActivityEvent and set motionlevel to some low value.</p> <p>ActivityEvent will give you response if and when motion is detected in camera. I belive when Camera is physically disconnected, activity event should trigger since no activity will be detected.</p> <p>Here's a piece of example:</p> <pre><code>import flash.media.Camera; import flash.display.Stage; import flash.media.Video; import flash.events.ActivityEvent; import flash.events.StatusEvent; var camera:Camera = Camera.getCamera(); camera.setMode(stage.stageWidth, stage.stageHeight,25); camera.addEventListener(ActivityEvent.ACTIVITY, activityEventHandler,false,0,true); camera.setMotionLevel(3); var video:Video = new Video(); video.width = stage.stageWidth; video.height = stage.stageHeight; video.attachCamera(camera); addChild(video); function activityEventHandler(a:ActivityEvent):void{ trace('Motion detected: '+a.activating); } </code></pre> <p>Note: setMotionlevel default value is 50 so if you set it to eg. 3 then camera still notices some small changes, even eye-blinking. That would help you to detect if there is any kind of motion at all. If no motion is detected then camera is probably dead.</p> <p>You maybe even can use motionlevel as 1, but this value is very sensitive and even slightest change in room lightning is probably detected as motion.</p> <p>Let me know if that helps, would be interesting to hear about this in practice with real USB camera.</p>

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