post-publish

Post-Publish Integration

This mostly follows the original blog post on weblog.lkiesow.de.

The Idea

• Let BigBlueButton process the recordings
• Send them to Opencast once they are finished
• Transferred media includes:
  • Combined video of all webcams
  • Video of Screen recording
  • Combined audio

Requirements

• The Ruby gem rest-client is used to send requests to Opencast. If it is not yet installed, manually install it via gem install rest-client.

Set Up BigBlueButton

What we want to add in BigBlueButton is a post processing script as described in the documentation. This script should be located at (there should already be an example script in that folder):

/usr/local/bigbluebutton/core/scripts/post_publish/post_publish.rb

Make sure to adjust the credentials set at the top of this script.

Place the folder oc_modules from the top-level of this repository in the same location as the script. It contains modules that are necessary for the script to run.

/usr/local/bigbluebutton/core/scripts/post_publish/oc_modules

Limitations

This is a very simple integration, but should work just fine. Nevertheless, there are a few limitations.

• BigBlueButton includes audio only in the camera recording, not in the screen recording. Your Opencast workflow will need to fix that.