Videomaker – Learn video production and editing, camera reviews › Forums › Technique › Editing › Background removal. › What NLE Video Editing
What NLE Video Editing Program are you using? if you using one that does Green Screen or Chroma Key, simply apply it to track this image sits on and then use the eyedropper to choose the white.
I would USE Kdenlive, it works on Linux and Windows. And it is free Program to download and use.