..:: tchncs ::..

..:: tchncs :: opentalk ::..

Next generation videoconferencing


OpenTalk is a new videoconferencing solution with great ambitions and an already nice featureset, developed by the german company Heinlein Support. The backend is written in Rust and yes, the stack is opensource as of early 2023.

Feature highlights

  • Polls
  • Breakout rooms
  • Whiteboard
  • Coffeebreak timer
  • Conference timer
  • Multiple room moderators
  • Chat
  • Screensharing
  • Recordings
  • Call in (coming soon to tchncs)
Find out more at opentalk.eu

Browser support

OpenTalk relies on WebRTC like most browserbased videoconferencing solutions such as Jitsi or BigBlueButton. Sadly not all browsers implement it in a reliable way. Thats not OpenTalk's fault. It's possible that there will be a desktop client in the future to make this easier.

🤙 Recommended

All browsers based on Chromium should work perfectly.

Google Chrome Chromium Vivaldi Microsoft Edge

⚠️ Sometimes unreliable

Browsers like Firefox and Safari are officially supported but in reality can cause random issues such as audio distortion.

Safari Firefox Windows Internet Explorer

First steps

If you have received an invite link

If you are the host of the meeting

Knowledge base

Nice to have know information about how to use OpenTalk and whats special about this instance.

⬇️ Protocol exporting

There are two options for exporting the protocol of your session:

  1. The big fat PDF export button on the bottom left:

    Screenshot of the create protocol section in an active room

    If you click this button, the protocol will be saved to the room – the possibly confusing part is, that you can't download it in the current session. You need to go back to the /dashboard, click the three dots on the room and navigate to room-details.

    Screenshot of room details
  2. The Etherpad controls

    Screenshot of clicking the import/export button in the pad

    Use the button on the top-right and export the protocol in any format you like – however this does not save a copy to the room like the first option would.

💻 Screensharing: showing presenter

Simplified mockup of the instructions below

In order to see the presenting person, just move your cursor into/within their image. You can also pin them permanently to screen: if you move your cursor onto the little window with their camera stream, three buttons will appear. Use the right one to pin as highlighted in the image above.

👻 Guest got no audio or video

Participant is able to join but they appear with audio and video muted despite of their settings. This can happen if they used a different WebRTC service such as Jitsi or BigBlueButton before. Easiest currently known solution would be a browser restart. This can even occour with Chrome and is no OpenTalk issue.

✋ Unsupported features on this instance

Most features are available at tchncs – however some appear to be meant for the enterprise version of OpenTalk, so they will be listed here if known. Features that will become available will be mentioned on the top of the site.

  • Revision-secure voting

🔥 Account removal

Note: early users might miss the role for self deletion, if the option is missing, contact your admin!

  1. Navigate to the auth service used by OpenTalk and login.
    1. Select Personal info
    2. Click Delete account below the save button
    3. Delete
  1. Navigate to the auth service of tchncs (if you also want to delete this account)
    1. Sign in as usual
    2. In your account settings, the last box should show you the button for account deletion.