Every point links to its minute
The model cites a transcript line and the time comes from the transcript itself. Points without support in the text are dropped.
The extension is being prepared for the stores
Lecture notes where every point jumps to the moment it was said
Courses, LMSs, webinars and YouTube. Notesavo pulls the key points from the transcript, answers questions with quotes and turns terms into flashcards. Videos without captions and Anki export come with Pro, later.
The sample works without installing or signing up.
- Timestamps come from the transcript, not the model
- Not just YouTube: course platforms and webinar rooms
- Your library stays in your browser
Click a timestamp and the recording jumps there
This is the real panel running on a prepared recording. The current point lights up as the video plays.
The demo recording and notes were prepared for this page.
Hello everyone. Today is lecture four of the course: graphs. We will see what they are, how to store them and how to walk them.
0:00 / 6:12
Notes · ready
Player subtitles · LMS
In short
A lecture on graphs: vertices and edges, how to store a graph and how to traverse it. For real-world sparse graphs an adjacency list is almost always right. BFS finds the shortest path by number of edges, DFS finds cycles and components, and Dijkstra finds shortest paths in weighted graphs with non-negative weights.
Key points
- A graph is vertices and edges; edges can be directed and weighted.
- An adjacency matrix checks an edge in O(1) but takes n² memory.
- An adjacency list takes O(n + m) — the default for sparse graphs.
- BFS walks layer by layer with a queue and finds shortest paths by edge count.
- DFS goes deep with a stack or recursion: cycles, components, topological sort.
- Mark a vertex visited when you enqueue it, not when you dequeue it.
- Dijkstra takes the closest unprocessed vertex from a heap: O((n + m) log n).
- Dijkstra fails with negative weights — use Bellman–Ford.
Chapters
Terms
- Adjacency list
- Each vertex keeps a list of neighbours; O(n + m) memory.
- BFS
- Layered traversal with a queue; shortest path without weights.
- DFS
- Depth-first traversal with a stack or recursion.
- Dijkstra’s algorithm
- Single-source shortest paths with non-negative weights.
After the video you keep working material, not a retelling
Ask and verify
Answers come only from transcript fragments, and the fragments sit right next to the answer.
Review instead of forgetting
Terms become spaced-repetition cards right in the panel. Anki export comes with Pro.
Into your system
A local library with transcript search, and Markdown export. Other formats come with Pro, later.
- Markdown
- Anki Pro
- Word Pro
- Obsidian Pro
- Notion Pro
- PDF Pro
- SRT Pro
- VTT Pro
- Quizlet Pro
- TXT Pro
For videos, files and your own text
The “Make notes” button appears under the video on YouTube and in the corner of the player on course platforms and in webinar rooms. You can also drop your own file into the extension.
- Notes
Course platform
HTML5 or HLS stream
player subtitles
- AKMDlive 1:12:40Notes
Webinar
Live or recorded
stream subtitles
- NotesHow HTTPS works · 18:24
YouTube
Any video with subtitles
subtitles only
- lecture-04.srtNotes
Your file
SRT, VTT or text
drop it into the extension
One kind of notes, everywhere
In short · Key points · Chapters · Terms · Q&A · Cards
Notesavo leaves DRM video alone and never bypasses protection — if a stream is encrypted, it says so.
No captions? Speech recognition comes with Pro
For accessible videos without captions, Notesavo will transcribe the audio. It comes with the paid version and will show how many minutes it needs before it starts.
Audio only
The audio track is extracted in your browser; the video is never re-encoded.
In 10-minute chunks
The server measures the length itself and charges what it measured, rounded to 0.1 minute; audio is not kept.
Then like captions
The transcript is stitched without duplicates and becomes notes.
For now it works with captions and with text you paste yourself. On YouTube, captions only.
No subtitles
Pro · soon74-min video, no subtitles. Recognition will use ≈ 74 min of your limit (812 min left). Continue?
RecogniseListen to the tab
Who it’s for
The same notes, four different jobs.
- export: lecture-4.md
Card 4 of 18
Why does BFS find shortest paths in unweighted graphs?
2:38AgainGot itA student before exams
- The problem
- 12 recorded lectures and three days until the exam.
- What Notesavo does
- Notes for every lecture, questions about the video and spaced-repetition term cards.
- The result
- Cards are reviewed right in the panel, each linking to its minute in the lecture. Anki export comes with Pro.
- АAnna09:12
Retention webinar summary:
- 0:26Measure by cohorts
- 1:18Look for a plateau
- 2:40Involuntary churn — up to ⅓
An employee after a webinar
- The problem
- A two-hour stream, and the team needs a summary by morning.
- What Notesavo does
- Key points with timestamps and takeaways — no retelling.
- The result
- Paste the summary into your team chat as Markdown; links open the right moments.
Rewatching gives a feeling of familiarity, not knowledge.
0:42Study Hour, ep. 42Point copied A researcher or journalist
- The problem
- You need an exact quote from an hour-long interview.
- What Notesavo does
- A full transcript with timestamps; verbatim quotes come with Pro.
- The result
- The point and its timestamp land in your text — anyone can check the source.
0:00 Why graphs 0:47 Matrix or list 1:52 Breadth-first search 2:50 Depth-first search 4:01 Dijkstra’s algorithm 5:01 Summary
A video creator
- The problem
- Chapters and a description take an hour after editing.
- What Notesavo does
- Timestamped chapters and a short description from one run; SRT/VTT subtitles come with Pro.
- The result
- The chapter block pastes into the description as is.
An honest comparison
If you only watch YouTube, a free summary built into your browser may be enough. Notesavo is for videos on course platforms and webinars, and for notes that take you to the exact minute.
| Checked October 30, 2026 | Notesavo | NoteGPT | Eightify | NotebookLM, YouTube Ask |
|---|---|---|---|---|
| Where it works | Players with captions in the browser: courses, webinars; YouTube; articles, PDF, Word, PowerPoint; collections of several sources | YouTube, Udemy, Coursera, Vimeo, Bilibili, files, PDF | YouTube only | YouTube, Google Drive, web pages, PDF (NotebookLM) |
| Videos without subtitles | In Pro, coming later: speech recognition on any site without DRM | Yes, for files and YouTube | No | Partly: audio files in NotebookLM; YouTube needs subtitles |
| Flashcards and quizzes | Flashcards — yes; quizzes — in Pro, coming later | Yes | No | Yes, free in NotebookLM |
| Anki export | In Pro, with timestamps — coming later | Not stated | No | No |
| Your own API key | Coming later | No | No | — |
| Free | 3 videos a day up to 60 min from subtitles | 15 quotas a month across all features | 1 summary a day up to 30 min, English only | Free; YouTube Ask — in selected countries and languages, needs a Google account |
| Price | Free; Pro after the paid version launches | Pro ≈ $9–9.99/month | $9.99/month, or $4.99/month billed yearly | Free |
Also free: Gemini in Chrome and YouTube Ask can summarize YouTube videos. If a quick YouTube summary is all you need, they may be enough.
Data from the services’ websites and public catalogues as of October 30, 2026. Prices and limits change — if something is out of date, email hello@notesavo.com and we will fix it. Names belong to their owners.
What stays with you and what goes to a server
Stays in your browser
- Your notes and transcripts library
- Flashcards and review progress
- Settings
Goes to the AI provider
- The transcript — to build notes and answer questions
Stored by us
- A random install ID (pseudonymous, up to 13 months without use) and free-limit counters — no video titles or text
- A one-way fingerprint of your IP address and network — against abuse, up to 48 hours (the registration network up to 30 days)
- Finished notes for videos YouTube confirms as public — in a shared cache for up to 90 days, without the transcript and not linked to you
Your own API key — later
The paid version will add a mode where requests go from your browser straight to your provider, in the cloud or local with Ollama and LM Studio, without our server.
Pricing
The free version will be available as soon as the extension is in the stores. Pro and your-own-API-key come later — prices are shown for reference.
Free
$0
forever
- 3 video a day up to 60 minutes
- 5 questions per video
- Markdown and a local library
Pro
Coming later$4.99
a month or $39 a year
- 20 hours of video a month
- 10 hours of speech recognition
- Quizzes, all exports and sync
Your own API key
Coming later$14.99
one-time
- Everything in Pro
- No Notesavo AI limits
- For your own provider or a local model
Questions
How accurate are the notes?
Every point is anchored to a specific place in the transcript: the model cites a line and we insert the timestamp ourselves. Points without support in the text are dropped, so you never get timestamps outside the video. Check any point with one click — the video jumps to that minute.
Which languages are supported?
English and Russian are first-class: that is where we test notes and speech recognition. Other languages work when the video has subtitles or the recognition provider supports them. You choose the notes language — e.g. English notes from a Russian lecture.
Does it work on courses with protected video?
If a platform encrypts its video (DRM), Notesavo does not bypass it and tells you so. If the player has subtitles, or they come in a regular unencrypted stream, you get notes.
What about YouTube?
On YouTube Notesavo only uses subtitles — manual or automatic — the same way the player loads them. We never download YouTube video or audio. If a video has no subtitles, it cannot be summarised.
What if a video has no subtitles?
For now notes are made from subtitles or from text you paste yourself (including an SRT/VTT file). Speech recognition for videos without subtitles will come with Pro — the paid version is coming later. Before starting it will show how many minutes it needs.
Where are my notes stored?
In your browser. Your notes library, transcripts and settings stay local. To build notes, transcript fragments go to the AI provider and are not stored by us. End-to-end encrypted sync between devices will come with Pro.
How does “your own API key” mode work?
This mode will come with the paid version. You will be able to enter a key and the address of any OpenAI-compatible API, including a local model in Ollama or LM Studio. Requests will go from your browser straight to the provider, without our server, and the key will stay only in your browser profile.
Which browsers are supported?
Chrome, Edge and Firefox — we test these automatically. Other Chromium-based browsers (Yandex Browser, Opera, Brave, Vivaldi, Arc) install it from the Chrome Web Store; where there is no side panel, the notes open in a separate window. Safari and mobile browsers are not supported yet.
Your next lecture comes with notes
Open the sample, click a timestamp and check a point against its source.
The sample works without installing or signing up.