YouTube Video Summarizer
YouTube video summarizer that stores every video in your research library
200,000+
Professionals worldwide
2 hrs → 10 min
Long videos summarised fast
74
Languages supported
$7
Lite Tier
The problem with single-use summarizers
Here's what happens after you get the summary
The paragraph is useful for five minutes. Three weeks later you can't find that specific insight from the 2-hour talk because the summary didn't save.
Summary useful for 5 minutes, then gone
Paste a YouTube URL into a free summarizer. Get a paragraph. Close the tab. Three weeks later you can't find that specific insight from the 2-hour talk. The summary didn't save. You're back to scrubbing through the full video manually.
Generic summaries don't answer your questions
A pre-generated overview tells you what an algorithm decided was important, not what you actually need to know. If the speaker gave three examples for a concept and you need the second one, the summary won't help.
The video doesn't connect to anything else
The talk references a paper. The paper cites a dataset. The dataset links to a report. No YouTube summarizer connects these sources so you can ask one question across all of them at once.
One tool for video. Another for PDFs. A third for podcasts. ChatGPT for follow-ups that forget your sources an hour later. Switching costs you 6 hours per week and $60-80/mo in stacked subscriptions.
What makes Otio different
What makes Otio different from every other YouTube video summarizer
Permanent storage. Cross-source queries. Every AI model. 74 languages. Cited answers you can verify in one click.
Permanent video library
When Otio processes a YouTube video, it stores the source in your workspace permanently. Come back weeks later. Ask a specific question. Get cited answers pointing to the exact moment in the transcript.
Cross-source: video + PDFs + podcasts
The talk references a paper. Add it. The paper cites a report. Add that too. Ask one question across all three and get a cited answer pulling from each source.
Every AI model, no restrictions
Choose ChatGPT, Claude, Gemini, or Perplexity. Switch mid-session to compare how different models interpret the same video. Every model, every tier, no hidden limits.
74 languages for international research
Summarise and query YouTube videos in any of 74 languages. English, Spanish, Mandarin, Arabic - Otio handles transcription and summarisation accurately.
How it works
Three steps: summarize, store, ask any time
Paste any YouTube URL. Get a structured summary. Ask follow-up questions today, next week, or three months later. Every answer cites the exact moment in the transcript.
1
Paste any YouTube URL
Conference talks, expert interviews, webinars, course recordings, podcasts. Long videos are no problem — a 2-hour talk becomes a structured summary in under 10 minutes. Pick the AI model: ChatGPT, Claude, Gemini, Perplexity.
2
Otio stores the full source, not just the summary. Come back in three weeks. The video is still there. No other YouTube summarizer treats video as a permanent, queryable source you can keep using across sessions.
3
What did the speaker recommend for X? What examples did they give for Y? How does their argument compare to the paper you uploaded last month? Every answer cites the exact moment in the transcript.
Use cases
Who uses Otio to summarize YouTube videos
Researchers, students, consultants, journalists, analysts. Anyone whose YouTube queue piles up faster than they can watch.
Researchers
Upload 2-hour conference talks, keynotes, recorded webinars. Get key takeaways in under 10 minutes. Ask follow-ups weeks later with cited answers pointing to the exact moment. Combine with the papers they reference.
Students
Summarise lectures, course videos, educational content. Ask specific questions about concepts you didn't understand. Cited answers point to the exact section. Store everything alongside readings.
Consultants
Upload client interviews, industry webinars, expert panels. Pull key points and themes across multiple videos. Build deliverables on a structured summary. Combine video with meeting transcripts and reports.
Journalists
Upload 50+ sources - videos, podcasts, articles, transcripts. Pull arguments across everything, grouped by theme. The speaker contradicted themselves between a podcast and a talk? Otio surfaces both with citations.
Analysts
Upload webinars, market analysis videos, research reports. Extract specific figures without watching every minute. Ask Otio to pull key data points and trends. Every answer cited so you can verify the numbers.
Try Otio free. Unlimited videos, every AI model, cited answers. No credit card.
How Otio compares
Honestly stacked against every other YouTube summarizer
Eightify, Glasp, NoteGPT, Decopy, YouLearn, ChatGPT, NotebookLM - they all do something well. Here's what they don't do.
Vs NoteGPT, Decopy, YouLearn
Fast, free, and forgotten
Paste a URL, get a summary. Fast, free, perfect for casual viewing. But the summary doesn't save and you can't ask follow-up questions. Fine if you'll never revisit. Otio is for when video is part of a research project.
Vs Eightify, Glasp
Strong for single videos, no persistent workspace
Eightify has timestamps and 40+ languages. Glasp has 2M+ users and transcript highlighting. Both are genuinely strong for single-video use. Neither stores video in a permanent library or lets you query across sources.
Vs ChatGPT, NotebookLM
No persistent storage, locked model choice
ChatGPT forgets your sources an hour later. NotebookLM ingests YouTube but locks you to Gemini and caps you at 50 sources. Otio: unlimited sources, every model (ChatGPT, Claude, Gemini, Perplexity), permanent library.
Testimonials
What our users say
@otio is really an excellent tool for understanding my papers. It is just like my personal librarian for the internet!
Feng Chun
Neuroscience PhD
I took a 2 hour YouTube video and had the AI in Otio summarise it. I then asked follow-up questions about the highlighted pieces that got my attention. All told, I was able to collect key takeaways in less than 10 mins. Amazing.
DnA
Researcher
I was fed up fighting with ChatGPT every time I wanted to do a deep dive on a library of research papers I had collected. It's the small things that made me switch - can't recommend it enough.
Karthik S.
Policy Analyst
Can Otio summarize long YouTube videos?
Yes. Otio handles long-form video accurately — 2-hour conference talks, webinars, course recordings. A user: "I took a 2 hour YouTube video and had the AI in Otio summarise it. Collected key takeaways in less than 10 mins." Choose your AI model: ChatGPT, Claude, Gemini, Perplexity.
Does Otio store the video summary for later use?
Can I ask specific questions about the video after summarizing it?
Does Otio work with non-English YouTube videos?
Can I combine YouTube videos with other sources in the same session?
How accurate are the summaries for technical content?
Do I need an account to try Otio?
What types of YouTube videos can Otio summarize?
Turn YouTube videos into permanent research sources
7 days free. Every AI model. Cited answers. Every video you summarise, stored permanently.