Flexmaniak.pl » camera http://blog.flexmaniak.pl Flex, Papervision3D, PHP, Symfony Sun, 02 Oct 2011 08:36:28 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 Black screen instead of video stream from camera http://blog.flexmaniak.pl/wrrors-and-warnings/flex-errors/black-screen-instead-of-video-stream-from-camera http://blog.flexmaniak.pl/wrrors-and-warnings/flex-errors/black-screen-instead-of-video-stream-from-camera#comments Sat, 09 Jul 2011 20:51:19 +0000 Piotr Wierzgała http://blog.flexmaniak.pl/?p=1315 What caused the error?
The error happened when I tried to display view from my web camera in a VideoDisply object but insted I got black screen. I was sure that camera was connected and it was working with other applications (e.g. Skype).

What is the solution?
Right click on any Flash content and choose “Settings”, then go to the “Camera” tab (section) and check if your camera is listed there. It should. In my case there were two additional cameras “Google Camera Adapter” and one of them was selected. They probably came with Google Talk plugin.

[0]: Creative WebCam Vista Plus #2
[1]: Google Camera Adapter 0
[2]: Google Camera Adapter 1

As soon as I selected “Creative WebCam” everything started to work.

]]> http://blog.flexmaniak.pl/wrrors-and-warnings/flex-errors/black-screen-instead-of-video-stream-from-camera/feed 0 How to capture image from web camera? http://blog.flexmaniak.pl/flex/how-to-capture-image-from-web-camera http://blog.flexmaniak.pl/flex/how-to-capture-image-from-web-camera#comments Sat, 09 Jul 2011 20:30:48 +0000 Piotr Wierzgała http://blog.flexmaniak.pl/?p=1306 If you have a web camera connected to your computer and you want to capture image from it then in the following text you will see how to do it.

Create VideoDisplay object and a button

<mx:VideoDisplay id="videoDisplay" width="640"  height="480"
    creationComplete="videoDisplay_CREATION_COMPLETE()"/>
<s:Button id="captureImageButton" label="Capture image"
    click="captureImageButton_CLICK()"/>

Attach camera to the VideoDisplay

private function videoDisplay_CREATION_COMPLETE():void
{
    camera = Camera.getCamera();
    if (camera) {
        videoDisplay.attachCamera(camera);
    } else {
        Alert.show("Your camera is not detected.");
    }
}

On this stage you shoud be able to see on the VideoDisplay the view registered by your camera .

Capture image from the camera

public function captureImageButton_CLICK():void
{
    var bitmapData:BitmapData = new BitmapData(videoDisplay.width, videoDisplay.height);
    bitmapData.draw(videoDisplay);
}

Note that the maximum resolution registered by the camera is camera.width x camera.height. You can adjust it with setMode() method from Camera class.

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