Videomaker – Learn video production and editing, camera reviews › Forums › General › Video and Film Discussion › 24FPS vs 60FPS › You can see the way that film
You can see the way that film shot at 24 fps is converted to 30 by going to any of the Military Channels and looking at film shot during World War II. Pause the film and then advance it one frame at a time. For one program, they generated each fifth frame by blending back frames and forward frames. Come to think of it, I guess this was accomplished by the number of blades on the shutter. 😉 On another program, they simply froze every 4th frame so that the sequence became 1,2,3,4,4,5,6,7,8,8,9,10,11,12,12,etc. which would imply that it was done elctronically to incorporate 24 fps film into a modern 30 fps production. Obviously, if you ran the old 24 fps film faster to get 30 fps, you would get a Keystone Cops effect.
One of the other respondants to my comment mentioned the shutter… My favorite sound is the sound of a 35mm projector coming up to speed. Second best sound is a Broadway pit orchestra. And third favorite sound is a newspaper printing press coming up to speed. Sadly, #1 and #3 will soon be a thing of the past. ;-(