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bbb-recorder

Bigbluebutton recordings export to webm or mp4 & live broadcasting. This is an example how I have implemented BBB recordings to distibutable file.

  1. Videos will be copy to /var/www/bigbluebutton-default/record. You can change value of copyToPath from config.json.
  2. Can be converted to mp4. Default webm
  3. Specify bitrate to control quality of the exported video by adjusting videoBitsPerSecond property in background.js

Dependencies

  1. xvfb (apt install xvfb)
  2. Google Chrome stable
  3. npm modules listed in package.json
  4. Everything inside dependencies_check.sh (run ./dependencies_check.sh to install all)

The latest Google Chrome stable build should be use.

curl -sS -o - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add
echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" > /etc/apt/sources.list.d/google-chrome.list
apt-get -y update
apt-get -y install google-chrome-stable

FFmpeg (if not installed already & have plan for mp4 or RTMP)

sudo add-apt-repository ppa:jonathonf/ffmpeg-4
sudo apt-get update
sudo apt-get install ffmpeg

Usage

Clone the project first:

git clone https://github.com/jibon57/bbb-recorder
cd bbb-recorder
npm install --ignore-scripts

Recording export

node export.js "https://BBB_HOST/playback/presentation/2.0/playback.html?meetingId=MEETING_ID" meeting.webm 10 true

Options

You can pass 4 args

  1. BBB recording link
  2. Export file name. Should be .webm at end
  3. Duration of recording in seconds. Default 10 seconds
  4. Convert to mp4 or not (true for convert to mp4). Default false

Live recording

You can also use liveJoin.js to live join meeting as a recorder & perform recording like this:

node liveJoin.js "https://BBB_HOST/bigbluebutton/api/join?meetingId=MEETING_ID...." liveRecord.webm 0 true

Here 0 mean no limit. Recording will auto stop after meeting end or kickout of recorder user. You can also set time limit like this:

node liveJoin.js "https://BBB_HOST/bigbluebutton/api/join?meetingId=MEETING_ID...." liveRecord.webm 60 true

Live RTMP broadcasting

Sometime you may want to broadcast meeting via RTMP. To test you can use ffmpegServer.js to run websocket server & liveRTMP.js to join the meeting. You'll have to edit rtmpUrl & ffmpegServer info inside config.json file (if need).

  1. First run websocket server by node ffmpegServer.js
  2. Then in another terminal tab
node liveRTMP.js "https://BBB_HOST/bigbluebutton/api/join?meetingId=MEETING_ID...."

You can also set duration otherwise it will close after meeting end or kickout:

node liveRTMP.js "https://BBB_HOST/bigbluebutton/api/join?meetingId=MEETING_ID...." 20

Check the process of websocket server, ffmpeg should start sending data to RTMP server.

Note: If presenter do nothing in the meeting room that time ffmpeg may exit with error & will try to reconnect again. So, it's recommend from me to keep webcam on. Actually I don't have much experience on ffmpeg to resolve those problems. Please contribute your experience.

How it will work?

When you will run the command that time Chrome browser will be open in background & visit the link to perform screen recording. So, if you have set 10 seconds then it will record 10 seconds only. Later it will give you file as webm or mp4.

Note: It will use extra CPU to process chrome & ffmpeg.

Looking for Bigbluebutton shared hosting?

We are offering cheaper Bigbluebutton shared hosting or Bigbluebutton installation/configuration/loadbalance service. You can send me email jibon[@]mynaparrot.com

Thanks to

puppetcam. Most of the parts were copied from there.

Canvas-Streaming-Example