title: Access webcam from multiple applications simultaneously
body: <p>The problem background - there are two different windows applications that are  trying to access webcam on the computer at the same time. Currently, only one application is able to access to it. I want to be able to allow both applications to simultaneously access the webcam. A common example of my problem is, skype and yahoo messenger trying to access the webcam on the computer at the same time.</p>
  
  <p>I found a few softwares (manycam.com, <a href="http://www.splitcamera.com/" rel="nofollow">http://www.splitcamera.com/</a>) that allow this on windows. But I am not sure how they implemented it. I want to write the code myself to achieve this since my code needs to be integrated with other APIs.</p>
  
  <p>I appreciate if anyone can shed light on how to write a device wrapper to achieve this.</p>