BBB Exports (Experimental)

Sometimes neither the stream recording nor a screen capture of the BBB recording really fits the format of a lecture and some video editing has to be done, or you simply want to retrieve your annotations from a lecture for sharing.

For these cases we are providing downloadable exports (only available where recordings were also enabled).

As with recordings those exports are not intended to be shared directly with students.
You are responsible to strip them from any copyrighted material or potential data infringements before releasing them in any form to your students. Exports are also deleted after 30 days.

Usually it should only take a few minutes for the exports to be available, even for conferences that ran over multiple hours (which is generally not recommended as it can result in a large audio/video desync).

These exports contain:

• Conference audio, webcams and screenshares
• A prepared Kdenlive project file, see below
• Annotated slides exported as PDF files
• The bbb-internal chat-log
• A logfile of our export script (in case something goes wrong)

Not in the export:

• Shared external videos
• Shared notes (being worked on)
• The chat-log from lectures.fslab.de

Poll results are inside of the raw events.xml, but they are not converted in a nicely readable format (for now).

Included inside of the downloadable zip file is a .kdenlive file which can be opened using the Kdenlive video editor.

There are multiple tracks inside of the project:

• A video track for each time a webcam has been enabled
• A video track for each time a screenshare has been enabled
• A video track for the presentation (including annotations as they were drawn)
• A single audio track with the pre-mixed conference audio (that's how we get it from BBB, no multitrack audio possible)

The basic steps for editing a lecture in Kdenlive are:

• Download the export from the conference site
• Open the Kdenlive project file
• Cut the presentation to make space for screenshares (if used)
• Add transformation effects to webcam videos and place them anywhere you like
• Set in-mark (position cursor where you want the video to start and press i)
• Set out-mark (…to stop and press o)
• Render (MP4, Selected zone)

We also have a short screencast on how to do the actual cutting: https://lectures.fslab.de/video/Y0FHThGYV1ptTxhj5NKi