Screen Sharing

A player can share a screen, a window or a browser tab beside their camera: a map from another program, a handout, a rules PDF. It works on P2P, LiveKit and Jitsi.

Sharing needs the dock: the button is in its voice panel, and shares show in its tiles. Foundry's own camera dock doesn't show them.

Sharing

1. Click Share your screen in the voice panel, beside the camera button.
2. Pick a screen, a window or a tab in the browser's picker.
3. To stop, click Stop sharing your screen, or the browser's own Stop sharing button. Leaving the call stops it too.

The button shows only while you are in the call and may share. Clicking it while you share stops the share; to share something else, stop and share again.

A share shows in a tile of its own, after the player's camera, whole rather than cropped: Your screen for yours, Player's screen for someone else's. Focus it like any tile to see it large.

A share is sent at up to 1080 lines and 15 frames a second, tuned for text and maps rather than motion: fine for a map or a sheet, poor for a video.

Sound

When you share a browser tab, Chrome and Edge offer to share its sound too. LiveKit and P2P carry it. Jitsi carries the picture only, since it sends one sound track per player.

The sound of a whole screen or a window is never sent: it would carry the call's own voices back to everyone.

Who may share

GMs choose in Modular A/V's settings, Who may share their screen:

• Everyone who may send video (the default);
• Gamemasters only;
• Nobody.

A GM's block on a player's video stops their share too. On LiveKit the server enforces this through the player's token; on P2P and Jitsi, everyone else's browser refuses a share it shouldn't get.

Changing the setting during a LiveKit or Jitsi call makes everyone rejoin for a moment, as changing video rights does.

Good to know

• Sharing a whole screen or the browser window shows your Foundry tab too. For a GM, that includes what only GMs see. Share another window or tab instead. Chrome keeps the Foundry tab itself out of the picker's list of tabs.
• On P2P your browser sends the share to each of the others, out of the same upload as your camera: with many players, your camera's picture gets smaller while you share.