1/10/2024 0 Comments Speed of sound fps![]() ![]() So you have the original camera frame rate and THEN you have to factor the display refresh rate of the display environment as well and if it's doing any extra enhancement welcome or not, to the temporal perception of the image. You can usually find that most moves take on what's called a "soap opera" effect, where the enhanced content ends of looking more fluid, something most people associate with not cinematic. Take an OLD movie, and watch it with the motion enhancement on and then off. There's been a push for so called "filmmaker mode" on TV's or to turn off many of the additional so called motion enhancements that a lot of modern TV's do in processing your image. Many conflate the refresh rate, and artefacts of the increased referees rate with content that's all mostly shot at the same ordination rate. So there *IS* a temporal difference to video shot and displayed at 60/50Hz because it's from two moments in time. They have two slightly different moments of time, flashed in the same frame interval. VIDEO cameras do something slightly different. Nowadays you have some TV's that have very high speed refresh rates of 120 or higher.Īll of them are still only displaying a single moment in time, but with varying degrees of refresh within that moment of time. One film frame of a moment in time was really flashed in two seperate halves. So the display rate was effectively 72Hz even in the most simple of mechanical projection environments.Įven in the bad old days of NTSC, a single FRAME was flashed at least twice, across two fields or three fields (half frames) so again, a refresh rate of 60Hz. That meant each frame was "flashed" three times or four times. In a old school cinema, the film was projected at 24 FPS, but typically projectors have three or four blades. Many don't realise that a 24 FPS content is RARELY watched at 24 FPS. This then fixed the amount of motion blur and tied it to the refresh rate. This rule meant that the shutter speed was always in a fixed relationship to the frame rate because of how the cameras were mechanically designed. I believe the association with 24fps being "cinematic" is tied to a rule that used to be rigid, relating to shutter speed which creates a certain kind of motion blur and thus affects our perception of this motion. ![]() Both have different temporal (frame rate) expectations and baggage. Narrative drama is quite different to live news or sports. You alway need to be specific about the TYPE of content. Question: What makes 24 frames per second standard cinematic? Why do a lot of Youtube videographers fixate on having the ability to shoot with 24FPS frame rate on their camera?
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