Android : record video with custom view on screen

I want my application to record video. but while recording video I want to display a view or drawable like human head. how can I do this?

I've seen this http://developer.android.com/training/camera/videobasics.html tutorial but it didn't help me.

this image explains what I want to do.(didn't have enough reputation to enter image directly)

http://i.stack.imgur.com/FAXxZ.png