Videos stream by.
Knowledge should stack up.
Lectures, breakdowns, tutorials — you can't watch them all. Stacktube watches the channels for you, picks what's worth your time, and stacks the rest as notes.
Any language in. Notes in your language out.
Start free — 7-day full Pro trialAnalyze one video free — no sign-up →- ✓Official Obsidian community plugin
- ✓Claude + Gemini cross-analysis
- ✓한국어 · 日本語 · English
This isn't a summary tool.
It's a filter for what's worth watching.
Three minutes with the note for what doesn't need watching. Real time only for what does.
Endless subscription feed
10 channels means 5–10 videos a day. No time to spot the one you actually need.
30 min watched, 3 days later: nothing
You watched to the end and can't recall the gist. A one-page note would have cost 3 minutes.
Summaries are just a table of contents
"This video discusses X" doesn't tell you whether X is worth your time.
Register once, done
From new-video detection to delivery, hands-off. The note structure adapts to each video — see real notes in the gallery.
Register a channel
Just paste the YouTube URL. New videos auto-detected.
AI reads deeply
Identifies the type and judges whether you should watch yourself.
Structured note
Two AIs cross-analyze — a note you can actually use.
The note arrives first
The note lands first; PDF and delivery follow in the background.
How is this different?
| AI summary tools | Notion AI / NotebookLM | Stacktube | |
|---|---|---|---|
| Detects new videos | — | Manual input | ✓Channel auto-monitoring |
| Output | 3-line summary | One-shot analysis | ✓Type-aware structured note |
| Knowledge accrual | Flows away | Stays in one doc | ✓Library · Resurface · Monthly issue |
| Integrations | Copy-paste | In-app only | ✓Official Obsidian plugin + 6 channels |
| Scene deep-links · frame capture | — | — | ✓Visual-point markers · Obsidian capture |
Your stacked notes
answer your questions.
Once you have a hundred notes, you don't need search — you need answers. Built only from the videos you've watched.
Three scattered videos
become one answer.
Yesterday's market analysis, last month's lecture, a tutorial from six months ago — videos you watched separately meet for the first time in front of your question.
🔒 These answers come from your notes — not the internet.
Every source is a scene deep link: click, and you're at that moment.
Reunion with old notes
Stacked knowledge deserves a reunion — forgotten notes return by email at 21, 90, 180, and 365 days.
Sync directly to your Obsidian vault
An official Obsidian-reviewed plugin. Notes and a Knowledge Hub (MOC) accumulate in your vault automatically.
├ Notes/Nasdaq Scenario Report.md
└ MOC/Economic Trends.md
Analyze once. It lands everywhere.
The moment a note is ready, every channel you've connected gets it. Hands off.
A morning digest — three minutes with your coffee.
Google Drive
Auto-backupLose the device. Keep the knowledge.
Dropbox
Team syncYour whole team learns at the same pace.
Kindle · Boox · Supernote
Direct + relayDirect send to Kindle. Boox & Supernote sync via Drive or Dropbox.
reMarkable
Three routesOfficial, WebDAV, or email — your call.
Notes in 6 languages
MultilingualKorean · Japanese · English + 3 more.
Capture the scene — to your vault only.
A whiteboard, an app screen — kept in your note at full resolution. Images are saved only to your vault; they never touch our servers.
Stored in your vault only · never uploaded
On the 1st of each month, last month arrives as a single book.
12 months, 12 volumes on your shelf — your year takes shape. EPUB delivered to Kindle · Email · Drive.
Get my first issueJust choose how much to automate.
≈ $0.20 per video. At Pro's 50 videos a month, that's ~20 hours back — every month. All paid plans free for 7 days.
Every plan. Everything in every analysis.
Where others give you a 3-line summary, one Stacktube analysis is a full knowledge note.
Starter
Not a taste — a start. Your first stack is added every week.
- ★1 channel weekly auto-monitor
- ✓2 channels · 10 analyses / mo
- ✓Web + email delivery
- ✓7-day full Pro trial on sign-up
📬 Weekly digest — 2 new notes this week. 3 over the limit — "GPT-5 deep dive" and more. Get them all on Pro →
Pro
The main course — every morning, all your channels are sorted.
- ★7 channels daily auto-monitor
- ✓50 analyses / mo (1–2 / day × 30)
- ✓Obsidian · Drive · Dropbox · E-ink · Kindle
- ✓Obsidian frame capture (plugin v0.2.0)
- ✓Cross-Video · Library · Resurface
Max
The plan where knowledge becomes a book. On the 1st, your monthly arrives.
- ★Monthly issue EPUB (Max only)
- ✓15 channels · 150 analyses / mo
- ✓Priority queue · Unlimited history
- ✓All output channels (Obsidian · Drive · Dropbox · E-ink · Kindle)
If no note gets made, we don't count it against your quota.
Questions?
Can it handle videos without captions?▾
Yes — any video with YouTube auto-captions works at any length. Without captions, we fall back to a lightweight analysis from title and description.
Does a failed analysis count against my quota?▾
No. If no note gets made, we don't deduct an analysis. Only analyses whose results are saved are counted.
Where are captured images stored?▾
Images captured with the Obsidian plugin are saved only to your vault. They are never uploaded to Stacktube's servers.
Will I be charged automatically after the trial?▾
No. When the trial ends, you drop to the free Starter plan. We don't take payment details upfront.
Do free-plan users get notes automatically?▾
Yes. One channel, weekly auto-analysis, weekly digest. Daily across all channels starts at Pro.
How does Obsidian integration work?▾
Via the official Obsidian community plugin — notes flow straight into your vault after a one-time API key paste. Pro plan or above (Starter delivers via web and email).
What's the monthly issue (EPUB)?▾
A month of your notes bound into a single book, delivered to Kindle · Email · Drive. Max-only.
Can it analyze videos in other languages?▾
Yes. As long as the video has captions, any language — English, Japanese, and more — becomes a note in the language you choose (English, Japanese, or Korean).
Is my analyzed data safe?▾
Everything we promise is verifiable in the code → /security
Watch the 1 of 10 that matters yourself. Stacktube stacks up the knowledge from the other 9.
Register a channel. Tomorrow morning, yesterday's videos are already sorted.
Start free — 7-day full Pro trial