Summarize Any Video Into Study Notes
Paste a YouTube or lecture link and OneStudy turns hours of video into clear, structured notes with the key points — then into flashcards, quizzes, and a tutor. Learn the whole thing in a fraction of the runtime.
Loved by 1,000,000+ students
Summarize Any Kind of Video
Recorded classes, online courses, explainer videos — OneStudy keeps the learning and drops the runtime.
Recorded Lectures
Turn a two-hour recorded class into structured notes you can review in ten minutes.
Online Courses
Summarize course videos into notes and flashcards so a module sticks the first time through.
YouTube Explainers
Paste any educational YouTube link and pull out the concepts, definitions, and examples worth keeping.
Webinars & Talks
Distill a long talk or webinar into the key takeaways worth remembering.
From material to mastery in three steps
Paste the video link
Drop in a YouTube URL or another video link — or upload the file directly.
Get structured notes
OneStudy reads the video's content and writes clear notes organized by topic, keeping the key points and dropping the filler.
Study it, don't rewatch it
Generate flashcards, a quiz, or a podcast from the summary and ask the tutor about anything unclear.
Get the Lesson Without the Runtime
Nobody has time to rewatch a two-hour lecture at 1x. OneStudy gives you everything that mattered in it.
Structured Notes
Get organized notes by topic instead of a raw transcript, built so you can study from them directly.
Instant Flashcards & Quizzes
Turn any video into active-recall flashcards and practice questions in one click — watching becomes remembering.
Ask the Video Anything
The AI tutor answers questions from the video's content, so you can dig into anything you didn't catch.
Listen Instead
Convert the summary into a podcast and review the video's content hands-free later.
Track Your Mastery
Quiz yourself on the video and watch each topic climb from unfamiliar to mastered.
Fast, Even for Long Videos
Summaries land quickly, whether it's a ten-minute explainer or a full recorded lecture.
AI Video Summarizer vs. Rewatching at 1.5x
Rewatching a lecture is the slowest way to study. OneStudy turns the whole video into notes you can actually revise from.
| Compare | Doing it by hand | Generic AI chatbots |  OneStudy |
|---|---|---|---|
| Structured notes, not a transcript | Raw text | ||
| Built-in tutor for the video | Generic | ||
| Works from a YouTube or lecture link | Copy-paste only | ||
| Auto flashcards & quizzes | |||
| Ask questions about the video | Generic | ||
| Turn it into a podcast | |||
| Minutes instead of hours | Sometimes |
How Students Use the Video Summarizer
Pre-class videos, fast
Summarizes assigned lecture videos into notes and flashcards before walking into class prepared.
Modules that stick
Turns course videos into quizzes to confirm each module landed before moving on.
Rewatch nothing
Converts a semester of recorded lectures into notes for a final review without replaying a single one.
Talks and webinars, distilled
Pulls the key takeaways from long talks into notes to revisit later.
AI Video Summarizer — your questions, answered
YouTube links, other online video URLs, recorded lectures, online course videos, webinars, and uploaded video files — as long as there's speech to work from.
Clean, structured notes organized by topic — plus one-click flashcards, quizzes, a practice test, or a podcast built from the same video.
From short explainers to multi-hour lectures. Long videos are processed in sections so nothing important is skipped.
In one click. Any video summary becomes flashcards, a quiz, a full test, or a podcast, and the tutor can quiz you on it.
Notes are built from the video's own content, and everything is editable — plus you can ask the AI tutor to clarify or expand on any point.
Yes, you can summarize videos for free. OneStudy+ removes limits and unlocks every study tool.
One upload, every study tool
OneStudy isn't one feature — it's a whole study system. Explore what else your material can become.
Stop rewatching. Start studying.
Summarize your first video free and turn hours of runtime into minutes of real learning.
No credit card required · Free to start