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Польові нотаткиз виміряної бібліотеки

Чого нас навчили виміряні відео

Ми оцінюємо відео на YouTube за тим, скільки хронометражу справді щось дає. Це закономірності, які проявилися, коли відео стало достатньо, щоб рахувати.

Медіана зайвого 36% медіанний початок корисної частини 0:47 перераховано 19 Oct 2026

  1. Стаття1 вер. 20266 хв

    Where our numbers come from, and where they do not apply

    Nine places where the measurements on this site stop being trustworthy, written down in one page so they do not have to be rediscovered one argument at a time.

  2. Звіт із даними1 вер. 20266 хв

    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.

  3. Звіт із даними1 вер. 20266 хв

    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.

  4. Стаття1 вер. 20264 хв

    Do you need an account to use Gistil? Mostly, no

    Reading a measurement we already have takes no account. Asking for a video nobody has measured yet does. Here is exactly where the line sits, and why it is there.

  5. Звіт із даними1 вер. 20267 хв

    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.

  6. Стаття26 серп. 20265 хв

    How to build a watch-later list you actually finish

    The list keeps growing because saving is free and watching is not. One rule, applied at the moment you save, fixes most of it.

  7. Звіт із даними26 серп. 20266 хв

    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.

  8. Стаття26 серп. 20265 хв

    How to tell a good tutorial from a bad one in thirty seconds

    Six signals readable from the page before you commit any time, each tied to something we can actually measure across the library rather than a hunch.

  9. Стаття26 серп. 20266 хв

    How to skip to the part of a YouTube video that actually matters

    Five ways to find the useful part of a video without watching the setup, ranked from the one everybody already tries to the one that works before you press play.

  10. Стаття26 серп. 20265 хв

    How to search inside a long video without watching the whole thing

    Browser search only reaches the text on the page, not what's said. Chapters, comments, and the written record of the video each cover a different gap.

  11. Звіт із даними26 серп. 20266 хв

    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.

  12. Стаття26 серп. 20265 хв

    Is watching at 2x speed actually helping you learn?

    Speed compresses a video uniformly, filler and substance alike. Where doubling the speed helps, where it quietly breaks comprehension, and what it does not fix.