This is an excellent film history lesson. It comes from filmmakerIQ.com and they discuss the history of film compositing. Starting back in the 1920’s with George Melies and going all the way to the present with digital green screen. If you have an interest in how films are made, this video is a must-watch. You’re sure to learn something.
One thing I didn’t know is that they used blue-screen techniques as early as 1940! It gets a bit complicated but I have to give filmmakerIQ.com credit for describing it as simply as they can. I hope you enjoy it as much as I did.
As always, feel free to let me know what you think in the comments.