Maltaannon's ceLightWrap

In a video tutorial Maltaannon shows you how to do a "light wrap," that is, "make your keyed out footage blend better with the background by casting light on it from surrounding elements." He's also selling a "Custom Effect" for this called ceLightWrap (CS3) for 9.95 EUR (~ $14).

You can find similar approaches to producing a lightwrap in the several AE books, in a few plug-ins (like one now by Red Giant), and around the web.

UPDATE: at some point custom effects stopped being supported. There's more on light wraps in How to Light Wrap: Blending composite edges with and without 3rd party filters, now at PVC.

How to Light Wrap

Blending composite edges with and without 3rd party filters

- See more at: http://www.provideocoalition.com/how-to-light-wrap#sthash.bhEjmKuo.dpuf

How to Light Wrap

Blending composite edges with and without 3rd party filters

- See more at: http://www.provideocoalition.com/how-to-light-wrap#sthash.bhEjmKuo.dpuf