Webcam interactive

Today I found these two references:

http://gskinner.com/blog/archives/2005/11/flash_8_webcam_1.html

http://gskinner.com/blog/archives/2005/08/flash_8_webcam.html

as the author never provided any information of the code, so I tried to searched online for some reference of it, but unluckily I cannot found any related tutorial for this, anyone know what this function called in as3? Or any related article can share with me?

Thanks.