That won’t be easy, I was thinking you would track the scar.
Without seeing the video, my workflow would be to create a clone/fake hair layer that will blend and cover the scar. Track the scar and then hopefully apply the tracking data to the clone/fake hair layer. It might be that you can’t get a good track, then you may very well will have to manually do this.
If you have CS6 you might want to give the new 3D camera tracker a shot too.
Good luck with it, going to be tough, I know, I’ve been there.
Johnny Cuevas, Editor
Thinkck.com
“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb.