# 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`
3. Can be converted to `mp4`. Default `webm`
2. 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.

```sh
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
```

### Usage

Clone the project first:

```javascript
git clone https://github.com/jibon57/bbb-recorder
cd bbb-recorder
npm install
```

### Recording export

```sh
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:

```sh
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:

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

### Live RTMP broadcasting (Experimental)

Sometime you may want to broadcast meeting via RTMP. I did some experiment on it & got success but not 100%. 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

```sh
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:

```sh
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 you do nothing in meeting room that time `ffmpeg` may exit with error & will try to reconnect again. 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 & 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](https://www.mynaparrot.com/classroom) or Bigbluebutton installation/configuration/loadbalance service. You can send me email jibon[@]mynaparrot.com


### Thanks to

[puppetcam](https://github.com/muralikg/puppetcam). Most of the parts were copied from there. 

[Canvas-Streaming-Example](https://github.com/fbsamples/Canvas-Streaming-Example)