frontpage.
newsnewestaskshowjobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

Open in hackernews

Show HN: YT NoteTaker – Simple Manual Note Taking on YouTube Videos

https://kavinaidoo.github.io/ytnt/
2•kavinaidoo•1y ago
Hi HN,

YTNT is a simple web-app for manually typing notes while watching a YouTube video. Simultaneously type and control playback with keyboard shortcuts. Export to Word (.docx) when you're done.

I'm seeking general feedback.

NOTES:

- The only way to "save" (for now) is to export to a Word .docx

- Speech-to-text only works in Chrome

GitHub: https://github.com/kavinaidoo/ytnt

Blog Post: http://archive.today/FRqwp

Thanks, Kavi

Comments

Leftium•1y ago
I forked oTranscribe and added some features to solve a similar problem.

- demo: https://otranscribe.netlify.app/?vsl=definedefine

- source code: https://github.com/Leftium/oTranscribe

- CLI tool to generate OTR (oTranscribe) files from (YouTube) SBV/TTML files: https://github.com/Leftium/otrgen

In my case, I wanted to start with the (auto-generated) YouTube transcript and get clickable timestamps. This makes it much faster to search through the content of a video: I can read/search much faster than watching a video, even on 2X speed.

I could also add my own notes to the transcript.

If you add support for loading transcripts like this, it could work cross-browser without the microphone/speech-to-text.

kavinaidoo•1y ago
Aha, starting with the YouTube transcript is a great idea. I wanted to start with it but I couldn't find a way to get it from the YouTube iFrame API so I went with the Web Speech API to listen and convert.

Forgive me for the confusion, the demo link implies that the transcript is loaded from the video but I see in the code that there's a pre-existing "/txt/definedefine.md" that is loaded. How are these SBV/TTML files downloaded from YouTube in the first place? I assume that it is a separate process? I see you are then using otrgen to presumably convert these so they can be used by oTranscribe.

If I could load the transcripts dynamically when loading the YouTube video that would be a great feature.

Leftium•1y ago
The demo simply demonstrates how I used my tool. It requires some manual set up:

- TTML files are downloaded via CLI: `yt-dlp.exe --skip-download --write-auto-sub --sub-format ttml`

- TTML files are converted to the OTR .MD format via my CLI tool

- The MD file can be dragged & dropped onto the web app.

---

I think it is possible to download SBV/TTML files, but the download must be done from the server due to CORS restrictions.

My app didn't go this far due to limitations of the (serverless) platform it is hosted on. Also it was faster to just do the steps manually vs. developing a server that does it.

I have seen many services that download the transcript. Here are a few:

- https://youtubetranscript.com

- https://kagi.com/summarizer

- https://www.tubepen.com

However, note YouTube may block your server if you download too many transcripts: https://kagifeedback.org/d/4451-universal-summarizer-cant-fi...

kavinaidoo•12mo ago
I think I'll just have to stick with my current method for now, looks like the only way to get it done with static hosting.
Leftium•1y ago
I'm planning a beat-aware YouTube player. Unfortunately, it is not possible to access the audio stream data across the YouTube embed. (For beat-detection analysis.)

I considered using the microphone like this. It's nice to see it works. Although there seems to be a time limit to how long the microphone can record?

My plan was to download video (youtube-dlp), then make a CLI tool that analyzes and uploads the beat-detection data. An advantage of the CLI tool is it can complete the analysis faster than playing the video at 1X.

kavinaidoo•1y ago
Yeah, I also wanted to "pipe" the audio directly to the Web Speech API but had to resort to using the mic. Another feature I wanted to add was to have a keyboard shortcut insert a screenshot of the video into the notes. Handy for diagrams etc but I hit some roadblocks there too and the workarounds were getting crazy.

Regarding the time-limit, I'm entirely accessing the audio stream using the Web Speech API and it "decides" (usually when there's a sufficient pause) when to finalize a recognition result. It was also firing a "recognition.onend" event after a certain amount of time (some old details here: https://stackoverflow.com/questions/38213580/chromes-webkits...) so I have a workaround where if the user did not turn off speech-to-text, it is immediately restarted. You'll see console warnings "userStopped == false - trying to restart" when this happens.

I assume you'll have no such issues because you'll be handling the "raw" audio data and not working through this API. Also, I've noticed that when using the Web Speech API on Safari, it does not "hear" what the tab is playing. It only hears external audio. I'm not sure whether this will be an issue for you but for me it means my app is Chrome only (suboptimal). Forgive me for my naïveté in this arena, It's the first time I'm using any browser audio API.

Would your tool run on a server and work with a frontend for YT link ingestion or will you just use it yourself from the cli?

Leftium•1y ago
Ideally, my tool would run on the server. Especially if I wanted to monetize the service. (However I think there may be legal issues that are larger than the technical ones...)

However it's just a small hobby project. So realistically I think this is how it will work:

- If user tries to load a video without beat data yet, instructions are shown for how to add the beat data. The instructions will be running CLI command like `npx upload-beat-data [YOUTUBE-URL]`

- The CLI tool will download the audio, then upload the beat data to my site.

- The site will also log which videos got a lot of requests, but are missing beat data. So I can manually add the beat data myself.

Stop state surveillance in Canada. Stop Bill C-22

https://www.jccf.ca/stop-bill-c-22-stop-surveillance-in-canada/
1•YoctoYARN•43s ago•0 comments

Learning, Fast and Slow: Towards LLMs That Adapt Continually

https://gepa-ai.github.io/gepa/blog/2026/05/11/learning-fast-and-slow/
1•LakshyAAAgrawal•4m ago•0 comments

A New Kind of Family-Separation Crisis

https://www.theatlantic.com/politics/2026/05/honduras-deportations-without-children/687153/
2•paulpauper•5m ago•0 comments

I Was Drowning Running 14 Markets Alone. So I Built a $0.41/Day AI Employee

https://medium.com/@alanscottencinas/i-was-drowning-running-14-markets-alone-so-i-built-a-0-41-da...
1•encinas88•5m ago•0 comments

State media control influences large language models

https://www.nature.com/articles/s41586-026-10506-7
1•paulpauper•5m ago•0 comments

What I've Been Reading

https://marginalrevolution.com/marginalrevolution/2026/05/what-ive-been-reading-288.html
2•paulpauper•6m ago•0 comments

THORChain exploit hits Bitcoin, Ethereum, and BSC: Hackers steal over $10M

https://ambcrypto.com/thorchain-exploit-hits-bitcoin-ethereum-and-bsc-hackers-steal-over-10-mln/
5•wslh•7m ago•1 comments

Tell HN: Audible app used 19.8GB of data while not being used

2•jimnotgym•7m ago•0 comments

Show HN: X open sourced their algorithm

https://www.xalgorithm.xyz/en
2•hsnrique•8m ago•0 comments

Does Trump Mobile know how many stripes are on the American flag?

https://www.theverge.com/gadgets/931347/trump-mobile-t1-phone-logo-flag-stars-stripes
3•droidjj•11m ago•0 comments

Show HN: Emergence World: World building as a way to evaluate LLMs

https://world.emergence.ai/
2•deepakakkil•11m ago•0 comments

ABC News has taken all FiveThirtyEight articles offline

https://twitter.com/baseballot/status/2055309076209492208
6•cmsparks•11m ago•1 comments

Dual Intel Arc Pro B60(48G) Inference, Virtualization, and Gaming Testing

https://www.lttlabs.com/articles/2026/05/15/maxsun-intel-arc-pro-b60-dual-48g-turbo-review
3•LabsLucas•12m ago•0 comments

Ask HN: Reviewing Plan from Plan Mode

3•dennis3124•13m ago•0 comments

Cvl: A C++26 library for mutating consteval state

https://github.com/friedkeenan/cvl
2•friedkeenan•14m ago•0 comments

Don't Design Your Emails (2016)

https://www.gkogan.co/dont-design-emails/
1•downbad_•15m ago•0 comments

PSVL 1.0 – The most comprehensive source-visible license (276 clauses)

https://github.com/BMBOMICH/PSVL
1•BMBOMICH•15m ago•0 comments

Taiwan's chips power the global economy. China holds the leverage

https://restofworld.org/2026/china-taiwan-tsmc-semiconductor-economic-risk/
2•srameshc•16m ago•0 comments

SSH reverse proxy written in Rust

https://github.com/firebadnofire/CentralSSH
2•firebadnofire•19m ago•0 comments

The Fall of the Theorem Economy

https://davidbessis.substack.com/p/the-fall-of-the-theorem-economy
5•cubefox•19m ago•0 comments

AI_glue – drop-in audit and governance for OpenAI and Anthropic apps

https://github.com/simonhansedasi/ai_glue
2•vigcneiugh•22m ago•0 comments

"Should I bring an umbrella to this thread?" – beyond toxicity/content scoring

https://vibecheck.opennotes.ai
1•anateus•22m ago•0 comments

Hackers have breached tank readers at US gas stations

https://www.cnn.com/2026/05/15/politics/iran-hackers-tank-readers-gas-stations
9•berkeleyjunk•22m ago•2 comments

A live shared night sky explore constellations with strangers and make wishes

https://constellations.unlicensedstudio.com/
1•allstern•23m ago•0 comments

Node-prewarm: CLI for Node 25's NODE_COMPILE_CACHE

https://ben3d.ca/blog/introducing-node-prewarm
1•bhouston•24m ago•0 comments

Private agent-to-agent payments on Solana with ZK proofs

https://github.com/agentzeny/snap-public
2•agentzeny•25m ago•0 comments

Lookagain: Sequential code review with fresh agent contexts

https://github.com/HartBrook/lookagain
1•pike00•26m ago•0 comments

Silicon Valley Wants to Put a Chip in Your Brain

https://www.politico.com/news/magazine/2026/05/15/silicon-valley-ai-transhumanism-brain-data-0090...
2•ano-ther•27m ago•0 comments

Write HTML. Render video. Built for agents

https://github.com/heygen-com/hyperframes
1•mv•28m ago•0 comments

Near-invisible solar cells that could turn windows into power generators

https://techxplore.com/news/2026-05-scientists-invisible-solar-cells-windows.html
3•geox•29m ago•0 comments