Enable real-time transcription in a Daily.co room and retrieve the transcript

Steps

1. Ensure the room has transcription enabled (set transcription on the room or domain settings); call callObject.startTranscription({ language: 'en' }) from an owner participant in the room — language defaults to the room/domain configuration if not specified.
2. Listen for the 'transcription-message' event on the callObject; each event includes a text field with the transcribed words, participantId of the speaker, and a timestamp — render these in real time as captions or accumulate them for a full transcript.
3. Listen for 'transcription-started' and 'transcription-stopped' events to track transcription state and update UI accordingly.
4. To stop transcription, call callObject.stopTranscription(); the transcription service finalizes and (if recording is also active) generates a transcript-webvtt file included with the recording download.
5. For rooms using the REST API, start transcription on a room by POSTing to the /rooms/:name/transcription endpoint; retrieve the final transcript file from the recording download links once the session ends.
6. Configure post-call transcript delivery via Daily webhooks (meeting.ended event) to receive a notification with recording and transcript download URLs automatically after each call.