Google's developer guide says that from Chrome 116, an extension can call the tabCapture API in a service worker to obtain a stream ID after a user gesture, and pass it to an offscreen document that records the tab.

Checked against its source on October 17, 2026

In the source's own words

“Starting in Chrome 116, you can call the browser.tabCapture API in a service worker to obtain a stream ID following user gesture.”

Audio recording and screen capture (Chrome extensions), Chrome for Developers, 2026, Record audio and video in the background.

What it measures: The guide is written for developers who build Chrome extensions. It shows how an extension can capture a tab's audio without a prompt each time, after the user has invoked the extension.
What it does not show: The guide describes what the browser allows, not a finished meeting app. It says nothing about consent, about meeting platforms, or about whether a recording of a given call is permitted.