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Previous fix has slightly refactored the handling of the JWT header,
thereby introducing a regression.
When passing the defaultRequest closure we must ensure
we supply a block that forces re-evaluation of the `jwt` property,
thereby executing the expiry check in RefreshingProperty.
As such, `$jwt` is valid, while `$it` is not, because `it` is resolved
only once, when the Client is setup. Whatever value is computed then,
is seen as a constant when passed to defaultRequest.
`$jwt`, on the other hand, forces re-evaluation every time the default request
block is executed, i.e. for every webhook request.

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JItsi BRoadcasting Infrastructure

What is Jibri

Jibri provides services for recording or streaming a Jitsi Meet conference.

It works by launching a Chrome instance rendered in a virtual framebuffer and capturing and encoding the output with ffmpeg. It is intended to be run on a separate machine (or a VM), with no other applications using the display or audio devices. Only one recording at a time is supported on a single jibri.

Installing Jibri

Installation notes

  • Jibri was built on Ubuntu 18.04 (Bionic), and has been tested with the pre-built kernel and extra kernel modules (linux-image-extra-virtual package). Any other distribution or kernel configuration MAY work but has not been tested.


ALSA and Loopback Device

  • First make sure the ALSA loopback module is available. The extra modules (including ALSA loopback) can be installed on Ubuntu 16.04 using package name linux-image-extra-virtual
  • Perform the following tasks as the root user
    • Set up the module to be loaded on boot: echo "snd_aloop" >> /etc/modules
    • Load the module into the running kernel: modprobe snd_aloop
    • Check to see that the module is already loaded: lsmod | grep snd_aloop
  • If the output shows the snd-aloop module loaded, then the ALSA loopback configuration step is complete.

Ffmpeg with X11 capture support

  • Jibri requires a relatively modern ffmpeg install with x11 capture compiled in. This comes by default in Ubuntu 16.04, by installing the ffmpeg package.
  • If building Jibri for Ubuntu 14.04 (trusty), the mc3man repo provides packages. They can be used by the following in Ubuntu 14.04:
sudo add-apt-repository ppa:mc3man/trusty-media
sudo apt-get update
sudo apt-get install ffmpeg

Google Chrome stable & Chromedriver

The latest Google Chrome stable build should be used. It may be able to be installed direclty via apt, but the manual instructions for installing it are as follows:

curl | sudo sh -c 'gpg --dearmor > /usr/share/keyrings/google-chrome-keyring.gpg'
echo "deb [arch=amd64 signed-by=/usr/share/keyrings/google-chrome-keyring.gpg] stable main" | sudo tee /etc/apt/sources.list.d/google-chrome.list
apt-get -y update
apt-get -y install google-chrome-stable

Add chrome managed policies file and set CommandLineFlagSecurityWarningsEnabled to false. It will hide warnings in Chrome. You can set it like so:

mkdir -p /etc/opt/chrome/policies/managed
echo '{ "CommandLineFlagSecurityWarningsEnabled": false }' >>/etc/opt/chrome/policies/managed/managed_policies.json

Chromedriver is also required and can be installed like so:

unzip ~/ -d ~/
rm ~/
sudo mv -f ~/chromedriver /usr/local/bin/chromedriver
sudo chown root:root /usr/local/bin/chromedriver
sudo chmod 0755 /usr/local/bin/chromedriver

Miscellaneous required tools

See the debian control file for the dependencies that are required. These can be installed using the following: sudo apt-get install default-jre-headless ffmpeg curl alsa-utils icewm xdotool xserver-xorg-video-dummy ruby-hocon

Jitsi Debian Repository

The Jibri packages can be found in the stable repository on First install the Jitsi repository key onto your system:

curl | sudo sh -c 'gpg --dearmor > /usr/share/keyrings/jitsi-keyring.gpg'

Create a sources.list.d file with the repository:

echo 'deb [signed-by=/usr/share/keyrings/jitsi-keyring.gpg] stable/' | sudo tee /etc/apt/sources.list.d/jitsi-stable.list > /dev/null

Update your package list:

sudo apt-get update

Install the latest jibri

sudo apt-get install jibri

User, group

  • Jibri is currently meant to be run as a regular system user. This example creatively uses username 'jibri' and group name 'jibri', but any user will do. This has not been tested with the root user.
  • Ensure that the jibri user is in the correct groups to make full access of the audio and video devices. The example jibri account in Ubuntu 16.04 are: "adm","audio","video","plugdev".
sudo usermod -aG adm,audio,video,plugdev jibri

Config files

  • Edit the jibri.conf file (installed to /etc/jitsi/jibri/jibri.conf by default) appropriately. You can look at reference.conf for the default values and an example of how to set up jibri.conf. Only override the values you want to change from their defaults in jibri.conf.
jibri {
    api {
        xmpp {
            environments = [
                    name = ""
                    xmpp-server-hosts = [""],
                    xmpp-domain = ""
                    control-login {
                        domain = ""
                        username = "jibri"
                        password = "jibriauthpass"
                        port = 5222
                    control-muc {
                        domain = ""
                        room-name = "JibriBrewery"
                        nickname = "myjibri-1-2-3-4"
                    call-login {
                        domain = ""
                        username = "recorder"
                        password = "jibrirecorderpass"
                    strip-from-room-domain = "conference."
                    trust-all-xmpp-certs = true
                    usage-timeout = 0


By default, Jibri logs to /var/log/jitsi/jibri. If you don't install via the debian package, you'll need to make sure this directory exists (or change the location to which Jibri logs by editing the log config

Configuring a Jitsi Meet environment for Jibri

Jibri requires some settings to be enabled within a Jitsi Meet configuration. These changes include virtualhosts and accounts in Prosody, settings for the jitsi meet web (within config.js) as well as jicofo.conf.


Create the internal MUC component entry. This is required so that the jibri clients can be discovered by Jicofo in a MUC that's not externally accessible by jitsi meet users. Add the following in /etc/prosody/prosody.cfg.lua:

-- internal muc component, meant to enable pools of jibri and jigasi clients
Component "" "muc"
    modules_enabled = {
    -- storage should be "none" for prosody 0.10 and "memory" for prosody 0.11
    storage = "memory"
    muc_room_cache_size = 1000

Create the recorder virtual host entry, to hold the user account for the jibri chrome session. This is used to restrict only authenticated jibri chrome sessions to be hidden participants in the conference being recordered. Add the following in /etc/prosody/prosody.cfg.lua:

VirtualHost ""
  modules_enabled = {
  authentication = "internal_plain"

Setup the two accounts jibri will use.

prosodyctl register jibri jibriauthpass
prosodyctl register recorder jibrirecorderpass

The first account is the one Jibri will use to log into the control MUC (where Jibri will send its status and await commands). The second account is the one Jibri will use as a client in selenium when it joins the call so that it can be treated in a special way by the Jitsi Meet web UI.


Edit /etc/jitsi/jicofo/jicofo.conf, set the appropriate MUC to look for the Jibri Controllers. This should be the same MUC as is referenced in jibri's config.json file. Restart Jicofo after setting this property. It's also suggested to set the pending-timeout to 90 seconds, to allow the Jibri some time to start up before being marked as failed.

jicofo {
  jibri {
    brewery-jid = ""
    pending-timeout = 90 seconds

Jitsi Meet

Edit the /etc/jitsi/meet/yourdomain-config.js file, add/set the following properties:

fileRecordingsEnabled: true, // If you want to enable file recording
liveStreamingEnabled: true, // If you want to enable live streaming
hiddenDomain: '',

Also make sure that in your interface config (/usr/share/jitsi-meet/interface_config.js by default), the TOOLBAR_BUTTONS array contains the recording value if you want to show the file recording button and the livestreaming value if you want to show the live streaming button.

Once recording is enabled in yourdomain-config.js, the recording button will become available in the user interface. However, until a valid jibri is seen by Jicofo, the mesage "Recording currently unavailable" will be displayed when it is pressed. Once a jibri connects successfully, the user will instead be prompted to enter a stream key.

Note: Make sure to update Jibri's config.json appropriately to match any config done above.

Start Jibri

Once you have configured config.json, start the jibri service:

sudo systemctl restart jibri