Dear Ridley and Todd thanx a lot for your help.
I am hoping to have a result like in the photo that I share here below:
https://xaxor.com/wp-content/uploads/2012/06/Christoffer-Relander8.jpg
BUT in video! I would like to get the same effect in moving images.
So you think I should use mattes?
I was also told to use blue/green screen…