What the heck are you talking about....films are "blurred" between frames?
Are you crazy? Have you never seen how films, and I'm not speaking of digital streaming or anything, but how films are shown in theatres?
Films are nothing more than a series of stills, shown one still at a time for 1/24 of a second onto the screen. The film is stopped for 1/24 of a second, light projected through the projector's apeture, through the stopped still frame which is projected onto the screen, the shutter then closes, the film advances one frame, shutter opens with still frame's image shown on the screen, and the process progresses.
That's why you hear the clicking and whirring from film projectors when a film is shown....the rapid opening and closing of the projector's shutter and the film's moving mechanism ratcheting the film forward one frame at a time, each 1/24 of a second.
They don't blur the frames together, the sense of motion is provided by your brain and retina.....due to the fact they can be fooled into "seeing" smooth motion if a series of stills are shown fast enough, smoothly enough.






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