I am using After Effects CS6 about 1 month and face a problem. I have successfully green screened marionettes so I can place in a video without showing the string, which is also green. The string did become transparent within the mask but within the marionette body, it just turned brown and moves like string. Question: Does anyone know how I can alter the string to be context aware?
That could be a tough one; there isn't any way to make a chroma key contextually aware. You can animate the beginning and ending points of the Simple Wire Removal effect that comes with AE to see if it does an adequate repair job for you.
As Dave said, you could try the simple wire removal. Otherwise of course you can always process each frame individually in Photoshop...
thanks for replying. I will research and try out your recommendation but am not feeling very confident at this point if I can't get the effect to fill in pixels or track movement.