NOTE: This video is from the Internet Archive, and I originally uploaded it over 15 (!) years ago because I found it interesting. The resolution is low and the audio is out of sync. You can probably find this in better quality elsewhere. I am only keeping it up out of historical interest.



Original description:
This old Fleischer cartoon stars 2 caracters (actually rolls of film) called "Talkie" and "Mutie". Talkie got a voice by a guy named Dr. Western, so when Mutie wants a voice too, they go seeing him. Dr. Western then explains how optical soundtrack on films work. While this film talks about optical soundtracks, it originally had Vitaphone soundtracks. Public Domain cartoon.