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Jitsi in Element

Element uses Jitsi for conference calls, which provides options for self-hosting your own server and supports most major platforms.

1:1 calls, or calls between you and one other person, do not use Jitsi. Instead, those calls work directly between clients or via TURN servers configured on the respective homeservers.

There's a number of ways to start a Jitsi call: the easiest way is to click on the voice or video buttons near the message composer in a room with more than 2 people. This will add a Jitsi widget which allows anyone in the room to join.

Integration managers (available through the 4 squares in the top right of the room) may provide their own approaches for adding Jitsi widgets.

Configuring Element to use your self-hosted Jitsi server

Element will use the Jitsi server that is embedded in the widget, even if it is not the one you configured. This is because conference calls must be held on a single Jitsi server and cannot be split over multiple servers.

However, you can configure Element to start a conference with your Jitsi server by adding to your config the following:

{
  "jitsi": {
    "preferredDomain": "your.jitsi.example.org"
  }
}

The default is jitsi.riot.im (a free service offered by Element), and the demo site for Jitsi uses meet.jit.si (also free).

Once you've applied the config change, refresh Element and press the call button. This should start a new conference on your Jitsi server.

Note: The widget URL will point to a jitsi.html page hosted by Element. The Jitsi domain will appear later in the URL as a configuration parameter.

Hint: If you want everyone on your homeserver to use the same Jitsi server by default, and you are using element-web 1.6 or newer, set the following on your homeserver's /.well-known/matrix/client config:

{
  "im.vector.riot.jitsi": {
    "preferredDomain": "your.jitsi.example.org"
  }
}

Element Android

Element Android (1.0.5+) supports custom Jitsi domains, similar to Element Web above.

1:1 calls, or calls between you and one other person, do not use Jitsi. Instead, those calls work directly between clients or via TURN servers configured on the respective homeservers.

For rooms with more than 2 joined members, when creating a Jitsi conference via call/video buttons of the toolbar (not via integration manager), Element Android will create a widget using the wrapper hosted on app.element.io. The domain used is the one specified by the /.well-known/matrix/client endpoint, and if not present it uses the fallback defined in config.xml (jitsi.riot.im)

For active Jitsi widgets in the room, a native Jitsi widget UI is created and points to the instance specified in the domain key of the widget content data.

Element Android manages allowed native widgets permissions a bit differently than web widgets (as the data shared are different and never shared with the widget URL). For Jitsi widgets, permissions are requested only once per domain (consent saved in account data).