By George Méliès, the french director who history sometimes call him the one who discovered stop-motion.
Once upon a time Méliès was filming in the street when his camera got stuck for a few seconds and then continued filming. When the film came out of the lab and he checked on it, what he found was how a car magically converted into an omnibus.
And this is how the effect was discovered by him, he used this trick in his movies to create the effect of substitution, as he was called the Cinemagician for his magic movies and innovating effects as painting the film so it looked like it has colors on it.
I’ll be posting a few more movies of him.