Connect to facebook from Flash

I want to click a button in my flash application, log in to facebook, leave a comment on wall and sign out. I try to figure it out but it seems complicated. Does anyone have an example or any sample code for this easy functionality?

Can you use USB camera with Facebook live?

On the Stream Setup page, select “Use Camera” in the video source window. Select your USB device from the camera device dropdown list in the Camera Controls window. Select your audio source and then “Next”.

How do I connect my encoder to Facebook live?

Go to Settings > Output. Learn more about Facebook's Live video specifications. Select Advanced in Output Mode dropdown. Select a H264 video encoder in the Encoder dropdown.

It's good that you have mentioned actionscript3. This is the AS3 SDK for Facebook
On a side note, you might find this article quite useful