Setting up a lecture

Lecture setup has three steps:

1. Details: a title (optional) and the date and time.
2. Materials: add slides, code or other files: PDF, PowerPoint, Python, C, C++ or assembly. You can add more later from the workspace with Import slides or source code. If an upload is interrupted, you can resume it.
3. Recording: choose whether to record audio, and pick your microphone. You must confirm that you have permission to record. You can also continue without recording.

The lecture workspace

• Slides: your PDF or PowerPoint in a viewer with previous/next and zoom. Annotation tools include pen, highlight, underline, text, a color picker and erasers (including a smart eraser that removes whole annotations).
• Code: source files open in tabs in an editor. Create a new file with Create source file. Python, C and C++ can run in the built-in terminal, and run output or compiler errors can be captured into your notes.
• Course files: a side panel with the course's files, which you can show or hide.
• Notes: a notes column next to your materials (see Notes, markers and diagrams).
• Panels can be shown, hidden and resized. Hide slides and code gives you more room for notes.

Recording

• Recording starts from the top bar of the lecture workspace. You can pause, resume and end it. A level meter shows that your microphone is picking up sound.
• Audio uploads in short segments while you record, so a dropped connection loses very little. Recording is designed to stay alive for lectures that run several hours.
• Only record when everyone required by your institution or local law has given permission. Tell attendees before recording begins.
• Transcription of finished recordings is controlled in Settings → Lecture defaults → Transcribe completed recordings. Changing that setting only affects future recordings.

Live captions

• Turn on Live captions while recording to see a live transcript as the lecture happens. It reconnects automatically if it drops.
• The transcript auto-scrolls while you're at the bottom. Scroll up and it stops following, so you can read back.
• Select transcript text to add it to your notes as a marker.
• Live captions depend on the browser. If your browser doesn't support them, you'll see a message saying so.
• Where live captions covered the audio, the final transcript uses them. Any gaps are transcribed from the recording afterward.

Ending a lecture

Ending the recording and completing the lecture are separate actions. Once the audio has uploaded, you can review it in the lecture.

Transcribing after a lecture

After a recording finishes uploading, open its review page to see how much of the audio is covered by live captions and Whisper transcription. Gaps are shown at their lecture timestamps. Choose Transcribe missing parts to send each uploaded segment that overlaps a gap to transcription; the estimate counts the full duration of those segments because transcription processes complete segments. You can also re-transcribe the full lecture. The current transcript remains visible until each replacement segment completes.

Recordings made while transcription was turned off can be transcribed later from the same review page, as long as their audio is still available.