What's New
Overview
This document gives you an overview of BigBlueButton 2.5, the latest version of BigBlueButton now in development.
Note: This document is DRAFT and will be expanded upon as 2.5 development goes through alpha, beta, and release.
BigBlueButton 2.5 offers users improved usability, increased engagement, and more performance.
- Usability - making common functions (such as raise hand) easier
- Engagement - giving the instructor more ways to engage students
- Performance - increasing overall performance and scalability
Here’s a breakdown of what’s new in 2.5.
Usability
Screenshot of current slide with annotations
To capture the current slide with annotations, you can now have BigBlueButton give you a PNG image of the current slide.
Easier setup of breakout rooms
Breakout rooms remember your previous rooms assignments within the current session. This lets you re-use the existing breakout rooms.
Change time of breakout rooms
You can now easily change the duration of a breakout rooms to a new time.
When you change the duration of breakout rooms, BigBlueButton will notify each breakout room in the public chat of the new duration.
Webcam pinning
You can now pin a webcam so it always stays visible. This is useful if one on of the webcams is showing sign language, for example, and you always want it to be visible.
Improvements to Guest Lobby
Private guest lobby message, display position in waiting line
Improvements to Endpoint API
New endpoint
A new API endpoint was added: /insertDocument
. Now, it is possible to send a batch of documents with all the common presentation parameters such as current
, downloadable
and removable
.
All the presentations are sent via payload (the body of the request) such as when preuploading documents in /create
endpoint, whether by a link to download the file or by base64
encoded file. See the API documentation for more information
Engagement
Text message broadcasting to breakout rooms
You can now broadcast a text message to all breakout rooms. This message will appear in the public chat of each breakout room.
Polling support for multiple answers per question
Analytics
Learning Analytics Dashboard improvements
Newly introduced Timeline with slide thumbnails and improved display of user emoji timing.
Performance
Improved scaling of webcams and screenshare
BigBlueButton now uses mediasoup (instead of Kurento) as its default WebRTC media server. You’ll find mediasoup able to handle more media streams (including screenshare) using less memory and CPU.
For analysis on mediasoup vs. Kurento, see BigBlueButton World - BigBlueButton’s Media Stack and the Road Ahead. Note that Kurento is still installed on the system and still plays a role in the recording of media.
Experimental
Two-way microphone connections using Mediasoup
FreeSWITCH is awesome, but it doesn’t support dual-stack IPV4 and IPV6 (we bridge this with nginx). It does not support trickle ICE for quick connections.
The experimental microphone bridge introduced in 2.4 is moving towards feature complete in 2.5. Support for the following features are now in 2.5:
- mediasoup now proxies audio connections for FreeSWITCH
- Echo test
- Input and output device switching
- Audio filters
For a list of pending issues for the experimental audio bridge to be considered production-grade, check this Depends on section in GitHub.
Moreover, the steps for enabling this have changed slightly since 2.4. If you want to try this (keep in mind it is still experimental), you need to add the fullAudioEnabled: true
flag in bbb-webrtc-sfu’s configuration (/etc/bigbluebutton/bbb-webrtc-sfu/production.yml
).
mkdir -p /etc/bigbluebutton/bbb-webrtc-sfu
if ! grep -q "fullAudioEnabled: true" /etc/bigbluebutton/bbb-webrtc-sfu/production.yml; then echo "fullAudioEnabled: true" >> /etc/bigbluebutton/bbb-webrtc-sfu/production.yml; fi
Once that flag is enabled in bbb-webrtc-sfu, there are two ways of opting in:
-
Using API parameters you can have specific meetings use the experimental bridge by passing: CREATE parameter
meta_fullaudio-bridge=fullaudio
to override the defaultsipjs
value -
You can change the defaults in the settings for bbb-html5 by adding the following to
/etc/bigbluebutton/bbb-html5.yml
(you will likely want to merge it carefully with your existing file):
public:
media:
audio:
defaultFullAudioBridge: fullaudio
After a restart of BigBlueButton (sudo bbb-conf --restart
), it should be ready to test. Reverting to the default options can be achieved by removing the override sections (and passed API parameters) and restart of BigBlueButton.
Upgraded components
Ubuntu 20.04
Under the hood, BigBlueButton 2.5 installs on Ubuntu 20.04 64-bit, and the following key components have been upgraded
- Tomcat 9
- Java 11
- Meteor 2.7.1
- NodeJS 14.19.1 (for bbb-html5-*)
- SBT 1.6.2
- Grails 5.0.1
- Gradle 7.3.1
- Note that BigBlueButton 2.5 is the first iteration running on Ubuntu 20.04
For full details on what is new in BigBlueButton 2.5, see the release notes. Recent releases:
Installation
For server requirements, BigBlueButton 2.5 needs similar minimum server requirements as 2.4.
To install 2.5, use bbb-install-2.5.sh. For example, the following command installs BigBlueButton 2.5-dev using bbb.example.com
as the hostname and notice@example.com
as the email for Let’s Encrypt (you would substitute these values for your own hostname and email address). Notice the version is -v focal-250
, which will install the latest officially published release (alpha/beta/etc) of BigBlueButton 2.5. If you instead use -v focal-25-dev
, you will be installing/updating to the very latest build tracking the source code from branch v2.5.x-release
.
wget -qO- https://ubuntu.bigbluebutton.org/bbb-install-2.5.sh | bash -s -- -v focal-250 -s bbb.example.com -e notice@example.com -a -w
After installation finishes, you should see the following installed packages (your version numbers may be slightly different).
# dpkg -l | grep bbb-
ii bbb-apps-akka 2.5 all BigBlueButton Apps (Akka)
ii bbb-config 1:2.5-9 amd64 BigBlueButton configuration utilities
ii bbb-demo 1:2.5-2 amd64 BigBlueButton API demos
ii bbb-etherpad 1:2.5-3 amd64 The EtherPad Lite components for BigBlueButton
ii bbb-freeswitch-core 2:2.5-4 amd64 BigBlueButton build of FreeSWITCH
ii bbb-freeswitch-sounds 1:2.5-2 amd64 FreeSWITCH Sounds
ii bbb-fsesl-akka 2.5 all BigBlueButton FS-ESL (Akka)
ii bbb-html5 1:2.5-12 amd64 The HTML5 components for BigBlueButton
ii bbb-learning-dashboard 1:2.5-2 amd64 BigBlueButton bbb-learning-dashboard
ii bbb-libreoffice-docker 1:2.5-2 amd64 BigBlueButton setup for LibreOffice running in docker
ii bbb-mkclean 1:0.8.7-1 amd64 Clean and optimize Matroska and WebM files
ii bbb-pads 1:2.5-2 amd64 BigBlueButton Pads
ii bbb-playback 1:2.5-2 amd64 BigBlueButton playback
ii bbb-playback-presentation 1:2.5-2 amd64 BigBluebutton playback of presentation
ii bbb-record-core 1:2.5-3 amd64 BigBlueButton record and playback
ii bbb-web 1:2.5-6 amd64 BigBlueButton API
ii bbb-webrtc-sfu 1:2.5-6 amd64 BigBlueButton WebRTC SFU
This installs the latest version of BigBlueButton 2.5-dev with Let’s encrypt certificate and the API demos. With the API demos installed, you can open https://<hostname>/
in a browser (where <hostname>
is the hostname you specified in the bbb-install-2.5.sh
command), enter your name, and click ‘Join’ to join ‘Demo Meeting’. For more information, see the bbb-install-2.5.sh documentation.
BigBlueButton 2.5-dev is under active development. While we don’t recommend setting it up in a production environment yet, we do encourage administrators to try out the build with others and give us feedback on our bigbluebutton-dev mailing list.
Development
For information on developing in BigBlueButton, see setting up a development environment for 2.5.
The build scripts for packaging 2.5 (using fpm) are located in the GitHub repository here.
Contribution
We welcome contributors to BigBlueButton 2.5! The best ways to contribute at the current time are:
- Try out installing BigBlueButton 2.5 and see if you spot any issues.
- Help test a 2.5 pull request in your development environment.