Features
Everything you get back from one recording.
Record it once. Chalk turns it into chapters, a searchable transcript, a study pack, and clips you can share, all from what was said.
- 00:00Where we sit in the galaxy
- 05:45How a star is born
- 14:20The life and death of a star
- 26:10What a black hole really is
- 37:30Reading light from far away
- 46:15The big open questions
It starts the moment you hit record.
Add a recording
However you’ve got the recording, add it to Chalk.
Record it live
Open your camera and start recording. Chalk breaks it into chapters as you go and saves it while you record, so there's no long wait to upload at the end.
Upload a file or paste a link
Already have the recording? Add a video or audio file, or paste a YouTube link. You get the same chapters, transcript, and study pack as a live recording.
Import from Zoom or Webex
Connect your Zoom or Webex account once, then bring in your cloud recordings with a tap. Turn on auto-import and every new one is added for you.
Understand
One recording, six ways to move through it.
The outward push of fusion balances gravity pulling in. When the fuel runs out, gravity wins.
- 01
A clickable table of contents
Every recording opens as titled topics with summaries. Tap one to land there.
- 02
Jump to any moment
A chapter or a transcript line takes the player to the exact second. No scrubbing.
- 03
Word-level transcript
Every word, timestamped and searchable. The line playing stays highlighted as it goes.
- 04
The whole video, summarized
A plain-English recap of the entire recording before you press play.
- 05
Ask the video
ProAsk anything and get an answer with timestamps that jump to where it came up.
- 06
Search your whole library
Find anything said across every recording you have, and land on the moment.
Study & retention
Watching it once isn’t studying.
Every recording comes with a study pack built from its own transcript, tuned to what this recording actually covered.
Built to be reliable
Designed around the hardest case: the three-hour recording.
Recording is split invisibly into short segments that upload while you’re still recording. Those same segments transcribe in parallel, so a long session is ready just as fast as a short one. And a network blip never costs you a minute of it.
~10–20 min
to process a 3-hour recording
Word-level
timestamp accuracy
0 seconds
lost to dropped uploads
See it run on a real recording.
Transcription by OpenAI Whisper · chapters, study packs & quizzes by GPT-4o.