Screensharing resolution issues

I am running my own Jitsi Instance on Ubuntu 18.04 using the ppa from deb https://download.jitsi.org stable/ .
A few weeks ago we started experiencing screen sharing resolution issues between two (latest) Chrome (on Linux) browsers. The connection popup showed a maximum video height of 360px. And the actual screen sharing resolution was even lower with 360x168. I tried fiddling with several settings on the server, but could only increase it to 480x248 sharing an VSCode window. Today we tracked down the circumstances this happens:

  • Chrome sharing VSCode β†’ Chrome: low resolution
  • Chrome sharing Desktop β†’ Chrome: low resolution
  • Chrome sharing Tilix (Terminal Application) β†’ Chrome: high resolution
  • Firefox sharing VSCode β†’ Chrome: high resolution
  • Firefox sharing Desktop β†’ Chrome: high resolution
  • Firefox sharing Tilix (Terminal Application) β†’ Chrome: high resolution
  • Chrome sharing VSCode β†’ Firefox: high resolution
  • Chrome sharing Desktop β†’ Firefox: high resolution
  • Chrome sharing Tilix (Terminal Application) β†’ Firefox: high resolution

So, it’s only a ratio of 2/9 cases here where it’s happening, and I have way to mitigate it just by avoiding these combination. But I thought, I share my findings just for reference.

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