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Screen sharing

Signalling - screen-share

SIG-11 - status: draft - screen-share, video, group

Start and stop a screen-share track within a call.

TODO. A participant starts a screen-share by adding a video track flagged as screen content; the receiver renders it distinctly from the camera track. The track flag and start/stop stanzas are not yet specified.

Notes. WhatsApp Web carries a ScreenContentDetector symbol; screen content is handled distinctly in the media path.

Parent: group-call
Requires: group-call

Implemented by

Flavor Status Source Notes
whatsapp-rust unknown

Annotation wacrg:SIG-11 — a flavor marks its implementation site in source with this comment; a script clones the source, finds it, and attaches the commit blame/permalink.

Contributors

Contributor Role
Rajeh Taher Rajeh Taher wrote initial spec

protocol history / diff - blame

Open questions - How a screen-share track is flagged in signalling and in the RTP/encoding plane.

Changelog

  • 2026-06-21 — Initial spec entry.

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