Like all of the stuff that "Thomas Edison" supposedly invented.
Thomas Edison is a mixed bag. He likely did invent multiplexing all by himself. And the original inspiration for a lot of the stuff that his team at Menlo Park actually created, for which he grabbed sole credit. The idea for the phonograph appears to his, too.
But the light bulb wasn't all that original, Edison just made it work. Same with motion pictures. And he did create the 35mm film format, in conjunction with George Eastman (Kodak), that also subsequently became a standard of still photography until recent times. Thanks to the German optical company Ernst Leitz and their 35mm Leica cameras of the 1920s, before the digital revolution made film for still photography nearly obsolete.