https://github.com/bigbluebutton/bbb-transcription-controller

https://github.com/bigbluebutton/bbb-transcription-controller

Last synced: 11 months ago
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• Host: GitHub
• URL: https://github.com/bigbluebutton/bbb-transcription-controller
• Owner: bigbluebutton
• Created: 2022-12-13T02:48:08.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2025-01-14T16:42:24.000Z (over 1 year ago)
• Last Synced: 2025-06-30T11:25:54.507Z (11 months ago)
• Language: JavaScript
• Size: 116 KB
• Stars: 10
• Watchers: 8
• Forks: 5
• Open Issues: 5
• Metadata Files:
  • Readme: README.md

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README

          
# bbb-transcription-controller

Controls the transcription of voice streams coming from BigBlueButton.

This node.js app listens to ESL events from Freeswitch and uses `mod_audio_fork`

to send the audio data into a voice transcription server. The returning transcription

is then sent into Redis and can be displayed by the HTML5 client



## Running

    npm install

    node app.js

## Configuration

The configuration file has comments explaining each of its parts

## VOSK servers

To spawn you own VOSK servers using docker use this:

    docker run -d -p 2700:2700 alphacep/kaldi-en:latest

alphacep's docker hub has images for most of their language models

Vosk listens on a websocket and I've set up a reverse proxy to make

configuration easier. Here's an example nginx config file:

    vosk-en.conf

    location /voskEN {

     proxy_pass http://127.0.0.1:2700;

      proxy_http_version 1.1;

      proxy_set_header Upgrade $http_upgrade;

      proxy_set_header Connection "Upgrade";

      proxy_read_timeout 60s;

      proxy_send_timeout 60s;

      client_body_timeout 60s;

      send_timeout 60s;

    }