Webcam BitmapData problem

Question

Hi all,
I'm trying to make a webcam app, using a microsoft Lifecam
VX-1000 and Flash Pro 8. It has 320x240 resolution. I capture the
camera image using
var image:BitmapData = new BitmapData(_root.view.width,
_root.view.height);
image.draw(_root.view);
where view is my camera object.
The problem is, in the capture, my image is squished into the
top left fourth of the screen, and the rest of the capture is white
space.
I'm doing image processing, so I need the full resolution.
An image that explains what I'm talking about:
http://www.bugsby.net/drive/webcamproblem.jpg
My project files:
http://www.bugsby.net/drive/scanner.zip
Thanks for taking the time!
matt carlin

Answer 1

I've run into this as well. It is some ratio between the
resolution of the camera and the video instance showing it –
I've actually run into it with an external FLV, but I'm sure it is
the same issue. I was making that popular reflected video on a
polished black surface effect. I don't know why it is and I don't
know how to actually fix the problem, but a patch/bandaid approach
is:
bmp = new BitmapData(myVideo._width,myVideo._ height, false,
0xff0000);
mtx = new Matrix();
mtx.scale(myVideo._xscale/100,-myVideo._yscale/100);
bmp.draw(myVideo,mtx);
In my case I only created the bitmap and the scale matrix
once, and then the draw method was called repeatedly later.
If anybody has an actual solution I would love to fine
out!