If you have your own server, there is an option in /usr/share/jitsi-meet/interface_config.js VIDEO_LAYOUT_FIT: 'both', This can be set to "height" or "width" and the video wil be fit to height or width. Usually height is the better choice.

Bring the jibri container back up: `docker-compose -f docker-compose.yml -f jibri.yml up -d`