Gistil Researchreport sui dati
YouTube, misurato: report sui dati
Valutiamo i video di YouTube minuto per minuto in base a quanto insegnano e riportiamo ciò che i numeri mostrano su una libreria di video di apprendimento. Ogni report indica data e metodo, e i suoi numeri restano fissi a quella data.
Studi più recenti
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Rapporto sui dati15 ott 202612 min
57%of a typical explanatory video's runtime is the part worth playing.
How much of a YouTube video is actually worth watching? We measured, minute by minute
We scored every minute of a library of learning videos. The median video earns 57% of its runtime, the first and last tenth earn least, and the title predicts a skip.
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Rapporto sui dati15 ott 20268 min
38%of ranked learning channels have a gold median score; AndrejKarpathy leads at 90.
The best YouTube channels for learning, by subject: measured video by video (2026)
The top three educational YouTube channels in each of 16 subjects, ranked by the median score of their measured videos, and why even the best channels are not gold every time.
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Altri report
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Rapporto sui dati1 set 20267 min
A chapter list tells you where things are, not which one is worth watching
Section by section across the library. The parts a chapter list would call content vary by 34 points inside a single video, and length barely predicts which is which.
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Rapporto sui dati1 set 20266 min
Does a longer video teach you more? We checked, and the answer is yes
Measured depth rises by 31 points from the shortest videos to the longest, holds inside every subject we can test, and buys less usefulness than you would expect.
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Rapporto sui dati1 set 20266 min
Shelf life: how long the material in a video stays true, by subject
Measured shelf life runs from 84.8 in science to 37.9 in tech news — a 47-point gap. Runtime does not predict it and neither does difficulty. Subject does.
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Rapporto sui dati1 set 20266 min
The eight-minute pile-up: where runtimes cluster, and what it costs
Runtimes pile up the moment a video passes eight minutes. The pile is real and easy to see. The penalty everyone assumes comes with it is not.
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Rapporto sui dati26 ago 20265 min
Do YouTube titles tell the truth? Honesty measured across twenty subjects
Average title honesty is 81 out of 100, from 87 in science down to 73 in travel. The same subjects that oversell titles also carry the most padding.
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Rapporto sui dati26 ago 20265 min
How long is a lesson, really: runtime measured across twenty subjects
Median runtime runs from 18:16 in history to 9:30 in productivity, nearly two to one. It has almost no relationship to which subjects score highest on value.
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Rapporto sui dati25 ago 20267 min
We measured twenty subjects. Three percent of the videos were advanced.
Three percent of the videos we measured were pitched above intermediate. Here is which subjects have none at all, and the one signal that finds the rest.
Edizioni precedenti
Questi report usavano una versione precedente della nostra scala. I loro numeri restano com’erano; i dati attuali sono in How much of a YouTube video is actually worth watching? We measured, minute by minute.
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Rapporto sui dati1 set 2026Dati aggiornati disponibili
Sponsor reads take 1.6% of the runtime. Padding takes 40%.
One in five measured videos carries a sponsor read, and it runs about sixty-seven seconds. The thing that actually spends your time is somewhere else entirely.
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Rapporto sui dati26 ago 2026Dati aggiornati disponibili
Which subjects are worth your time: measured value across twenty subjects
Science scores highest of twenty measured subjects at 66.9; travel lowest at 38.4. The same subjects also carry the least padding and the most honest titles.
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Rapporto sui dati26 ago 2026Dati aggiornati disponibili
Runtime is a useless filter: longer videos carry less padding, not more
Padding falls from 45% under ten minutes to 28% over an hour, and measured value rises the same way. Picking the shorter video is, on average, backwards.
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Rapporto sui dati26 ago 2026Dati aggiornati disponibili
The shape of a YouTube video: every value curve overlaid
Average measured value climbs fast, holds through the middle two-thirds of a video, then falls sharply near the end. Here is the curve, averaged across the library.
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Rapporto sui dati25 ago 2026Dati aggiornati disponibili
One in five measured videos was not worth the time it asked for
One in five measured videos was not worth its runtime. The share runs from 5% in science to 64% in travel, and the title predicts it before you click.
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Rapporto sui dati25 ago 2026Dati aggiornati disponibili
We measured the padding again, on a larger library. The number has not moved.
A second padding census, on a larger set of measured videos. The median is still 40%, the set has grown by three quarters, and the distribution barely moved.
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Rapporto sui dati25 ago 2026Dati aggiornati disponibili
The useful part of the median measured video starts at 1:02
Across the videos we have measured the useful part starts at 1:02, and one in ten makes you wait past 3:47. Here is how that splits across twenty subjects.
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Rapporto sui dati17 ago 2026Dati aggiornati disponibili
We measured YouTube across fifteen categories. This is how much of it was filler.
A padding census across fifteen categories: the median video is 40% structure, and the long ones are the least padded, not the most.