how to capture tab audio even after popup is closed

[Vivek Sagar]

i used this approach ->

popup.js file:

chrome.tabCapture.capture({ audio: true }, (stream) => {

  const context = new AudioContext();

  const track = context.createMediaStreamSource(stream);

Audio capturing works until the popup get closed any way to make it persistent

[Oliver Dunk]

Assuming you're using Manifest V3, you'll need to open a new tab or window and do the recording from there. There unfortunately isn't a way to do recording of video in the background (unless you are comfortable using the getDisplayMedia API from an offscreen document and prompting the user) at the moment.

We've committed to adding a way of doing this which we are tracking here: https://developer.chrome.com/docs/extensions/migrating/known-issues/#closing-the-platform-gap

Oliver Dunk | DevRel, Chrome Extensions | https://developer.chrome.com/ | London, GB

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[Vivek Sagar]

can you elaborate more like how can i open new tab for eg i want to recors audio coming from youtube video

[Oliver Dunk]

The example here should help: https://developer.chrome.com/docs/extensions/mv3/screen_capture/#audio-and-video. You'll just need a way of getting the tab ID for the page with YouTube.

We recently added a more complete sample here which might help: https://github.com/GoogleChrome/chrome-extensions-samples/tree/main/api-samples/tabCapture

Oliver Dunk | DevRel, Chrome Extensions | https://developer.chrome.com/ | London, GB