How many still frames per second. Unit: fps (frames per second).
Common values and how they feel
| fps | Where you see it | Visual feel |
|---|
| 24 | Film, drama, cinematic content | Slight judder, "movie-like" |
| 25 / 50 | European/Korean broadcast (PAL) | Almost identical to 24 |
| 30 / 29.97 | US broadcast, YouTube, news | Smooth but ordinary |
| 60 / 59.94 | Sports, games, dance MVs, hi-end TV | Very smooth — "real-feeling" or "cheap" |
| 120 / 240+ | Slow-mo capture (played at 24/30) | Too smooth on its own; reads as unreal |
Why 24fps feels cinematic
Not just custom — three things stack.
- Historical standardization — Adopted in the late 1920s when sound film arrived, as a compromise between sync and film economy. A century of audiences has trained on "movie = 24fps."
- Judder + motion blur — At 24fps, fast motion judders slightly, while 180° shutter motion blur softens that judder. This particular flow is what "the look of cinema" actually is.
- Cognitive distance — Too smooth reads as real life, and real life reads as not-a-story. The slight roughness of 24fps gives the audience a quiet signal: "this is a constructed world."
Why 60fps feels "TV-ish" — the soap opera effect
The 60fps you've seen in dance MVs is deliberate, for movement clarity (catching choreography in detail). The "cheap TV" feeling 60fps gives elsewhere is different.
- US daytime soap operas have shot on video at 60i since the 1950s for cost reasons.
- Films and prestige drama of the same eras shot on 24fps film.
- In the 90s–2000s, prestige shows like The West Wing and The Wire established 24p TV drama, sharpening the contrast between the two looks further.
- Audience subconscious: "smooth = low-budget soap", "24fps = film."
Modern 4K HDR TVs include motion-smoothing features that interpolate 24fps films up to 60fps, reproducing the same effect. It's the first option cinephiles disable when they buy a TV.
24fps vs 30fps in practice
- YouTube / vlog: 30fps is fine. The slight automatic interpolation softens 24fps judder.
- Cinematic intent: 24fps + 180° shutter (= 1/50).
- Korean broadcast delivery: 29.97fps or 59.94fps (legacy NTSC).
- Sports / action: 60fps to keep detail in fast motion.
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