Learn from a YouTube video: summary, quiz and subtitles in your language
Paste a video's link on your learning board. Watch it there with subtitles, while Diaposi AI summarises it part by part and writes a quiz on what it says.
- Free to start, no card
- Any YouTube video with captions
How do I learn from a YouTube video with AI?
With Diaposi, paste the video's link on your learning board. It plays there with subtitles while you take notes beside it. On a paid plan, Diaposi AI reads the video's captions and writes its summary: the whole video in one minute, its key terms and its parts with their times, each a press away. It then writes a quiz on the parts you choose, and translates the subtitles into your language.
How to learn from a video, in three steps
Paste the video's link
Copy the link of a YouTube video and paste it on your board. On paid plans, add a whole playlist or search YouTube from the board.
Watch it on your board
The video plays where you work, with subtitles, at the speed you choose. Write and draw beside it while it plays.
Get its summary, then its quiz
One press writes the summary beside the video. One more opens a quiz on the parts you choose.
One video, six ways to study it
These are the buttons of the video’s own toolbar on your board. Press one.
It plays on your board, with subtitles
The video plays where your notes are, with subtitles on, at the speed you choose, from 0.25× to 2×. Open it again and it goes on from where you stopped. Every plan has this player: the Free plan takes one YouTube video per board.
On every plan
Any lecture with captions. Here, four from a biomedicine course.
Physiology, immunology, genetics, neuroscience: each video gets its own summary, with its parts and their times.
Build your board round the video
A video is one element among others. Put the rest of your course beside it.
Add a micrograph, a diagram or a scan from your device, a link or Google Drive. On paid plans, search openly licensed images without leaving the board: their credit is added under them.
Mark what matters with stickers: Microsoft’s Fluent Emoji, patches, GIFs from GIPHY, and your own, made from a picture. Diaposi’s study badges come with Starter and Pro.
The video keeps playing while you write, draw and stick notes around it. Its summary sits beside it, on the same board.
Import the lecture’s PDF, PowerPoint or Word file on the same board. The video sits beside the page it explains, each with its own AI tools.
Find the right video without leaving your board
Search YouTube from the board
On paid plans, type a subject and the results come up beside your work. Only videos with captions are offered, so each one can be summarised and quizzed. Drag one onto the board, or press it.
Videos found for your course
On paid plans, Diaposi reads the chapters of your document and finds videos with captions for each one. Or paste a link: a single video, or a whole playlist in its order.
And for the documents of your course
A video sits beside your pages. Each of these tools is written from them.
- Learning with AIEvery page explained, with an example and its prerequisites.
- Summary and key pointsThe whole file in one read, with its chapters.
- Quiz from your documentsShort questions on the chapters you choose, at your own pace.
- Mock exam out of 20Against the clock, with written answers and a grade.
- FlashcardsThe key ideas, card by card.
- Study planSpread this learning over the days you have.
Video learning you can trust
Diaposi AI works from what the video says, and leaves the video where it is.
Written from the video's captions
The summary and the quiz come from what the video says, not from the open web.
The video stays on YouTube
It plays in YouTube's embedded player, with its creator credited. Diaposi does not host or copy it.
Not used to train models
What you upload is used to answer you, not to train AI models.
Hosted in Europe
On European infrastructure, encrypted, with the GDPR rights and controls that come with it.
Start free. Pay when Diaposi becomes how you study.
Credits pay for the AI's work on your documents and your videos.
1 creditA video summarised
- FreeFreeTry it on your course.
- 10 credits to try the AI
- 2 learning spaces for your documents
- YouTube videos per board: 1
- Video player with subtitles
- Not included: AI video summary, quiz and translation
- Not included: YouTube search and recommended videos
- Not included: Videos from your device or Google Drive
- Starter€8.99/ monthA whole semester, on your own.
- 100 credits every month
- 10 learning spaces, the whole board design
- YouTube videos per board: 10
- Video player with subtitles
- AI video summary, quiz and translation
- YouTube search and recommended videos
- Videos from your device or Google Drive
- RecommendedPro€15.99/ monthStudy with friends, keep everything.
- 200 credits every month
- No limit on learning spaces
- YouTube videos per board: unlimited
- Video player with subtitles
- AI video summary, quiz and translation
- YouTube search and recommended videos
- Videos from your device or Google Drive
- No card to start
- Cancel any time
- Prices include VAT
Frequently asked questions
Can AI summarise a YouTube video?
Yes. Paste the video's link on your Diaposi board and press Summarize with AI. Diaposi AI reads the video's captions and writes its summary: the whole video in one minute, its key terms and its parts with their times. The AI summary is on the Starter and Pro plans.
Can I make a quiz from a YouTube video?
Yes, on Starter and Pro. Press Quiz on this video, choose the parts to cover, the kinds of questions, the level and how many. Diaposi AI writes the quiz from what the video says, and every answer is corrected.
Which videos can I learn from?
Any YouTube video plays on your board from its link. The summary, the quiz and the subtitles need a video with captions. Captions made automatically by YouTube count.
What if the video has no captions?
It still plays on your board, but Diaposi cannot summarise it or write its quiz, and says so. The YouTube search on the board offers only videos with captions.
Can I translate the subtitles of a YouTube video?
Yes, on Starter and Pro: into English, French, Spanish, German, Italian, Portuguese, Dutch, Swedish, Polish, Romanian, Russian, Ukrainian, Turkish, Arabic, Hindi, Chinese, Japanese or Korean. The subtitles in the video's own language show on every plan.
Does the summary have timestamps?
Yes. Each part of the summary has its start and end times, and what to focus on is timed too. Press a time and the video plays from there.
Can I get the transcript of a YouTube video?
Yes. Extract the captions writes what the video says as a document on your board, with a time at the head of each paragraph. You can read it, edit it and press a time to play that passage.
Is learning from videos free?
You can start free, with no card: the Free plan plays one YouTube video per board, with its subtitles. The AI summary, the quiz and translated subtitles are on Starter and Pro, paid with your monthly credits. The plans are on the pricing page.
How many videos can I put on a board?
One YouTube video per board on the Free plan, 10 on Starter, and no limit on Pro. On paid plans, a playlist's link adds its videos in their order.
Can I use my own video files?
On Starter and Pro, yes: an MP4, WebM or MOV file up to 10 MB from your device, or a video shared from Google Drive. They play on your board. The summary, the quiz and the subtitles are for YouTube videos with captions.
Does Diaposi download or copy the video?
No. The video plays in YouTube's embedded player and its creator stays credited, with its title, channel, date and licence. Diaposi does not host or copy it, and YouTube's Terms of Service apply.
Can I take notes while the video plays?
Yes. The video keeps playing while you write, draw and add sticky notes around it. Its summary and its captions are documents on the same board, beside the pages of your course.
Can I add pictures and stickers beside a video?
Yes. A video is one element of your board: add pictures from your device, a link or Google Drive, stickers, sticky notes and drawing around it. The image search and the badges are on Starter and Pro.