3D Scene in VSE: Hide an object keeping the shadow I have a scene (add / scene) in my VSE, and I made the lights and shadow to match those of the background footage. Now what would be the best way/strategy/approach to hide the plane, only retaining the shadow?

PS - The plane has the basic "new" material for now ; I'll make adjustments later, I just want to know if what I want to achieve is possible..?



EDIT: YES, I know you can use an image as the background/drop of a 3d scene, but this is not what I'm trying to do at all, thank you very much.
EDIT2: Apparently, it is simply not possible. The "only shadows" material checkbox of Blender Internal didn't make it into cycles. I guess it was too handy, intuitive and straightforward ;p
As of Version 2.79 Cycles has an option to make an object a shadow catcher.



From the release notes 


  This option will make object to only receive shadows in a way that it could be alpha-overed onto another image.