We introduce a dictionary member to MediaStreamConstraints called preferCurrentTab. It's a boolean defaulting to false. When getDisplayMedia() is called with preferCurrentTab=true, the browser should offer the current tab as the most prominent capture source.


Sometimes a page wishes to capture itself. For example, a slide-deck might wish to capture itself and stream itself to a conference call, or a user might wish to capture footage of themselves playing an online game.


Specification link

Specification being incubated in a Community Group

Status in Chromium


Enabled by default (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.


Intent to Prototype url

Intent to Prototype thread

Search tags

getDisplayMedia, capture, getCurrentBrowsingContextMedia, share, sharing,

Last updated on 2021-12-13