https://jitsi-server.example.com/MyConference#userInfo.displayName="My Nickname"&config.startWithVideoMuted=true&config.startWithAudioMuted=true

References:

• https://community.jitsi.org/t/jitsi-meet-displayname-via-url-param/32281/3
• https://community.jitsi.org/t/url-parameters-to-join-jitsi-meet-with-camera-and-or-mic-disabled/32341