https://github.com/spite/virtual-webcam
https://github.com/spite/virtual-webcam
Last synced: about 1 year ago
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- Host: GitHub
- URL: https://github.com/spite/virtual-webcam
- Owner: spite
- Created: 2020-05-07T11:21:18.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2023-12-01T12:43:06.000Z (over 2 years ago)
- Last Synced: 2025-04-02T03:35:11.916Z (about 1 year ago)
- Language: JavaScript
- Size: 2.58 MB
- Stars: 281
- Watchers: 11
- Forks: 35
- Open Issues: 8
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Metadata Files:
- Readme: README.md
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README
# virtual-webcam chrome extension
This is a proof of concept of adding a virtual MediaDevice in a browser extension.
NOTE: You can use it as a regular library, check out cam.html.
To use (Chromium):
- download or clone the repo
- go to chrome://extensions
- enable Developer Mode
- Load unpacked
- Browse to the folder with the extension (where the manifest.json is)
- Note:Pages will need to be reloaded after an extension is installed to be able to use it
To use (Firefox):
- download or clone the repo
- go to about:debugging#/runtime/this-firefox
- Click "Load Temporary Add-on..."
- Browse to the folder with the extension and select the manifest.json
- Note:Pages will need to be reloaded after an extension is installed to be able to use it
Now any (most) pages using getUserMedia should be able to see a "Chrome Virtual Webcam" device
Should work on Chromium based browsers that support extensions.
Caveats:
- Some pages use shims or do some checks that might break with the extension
- WebRTC samples: https://webrtc.github.io/samples/src/content/devices/input-output/
- For now, the Virtual Webcam takes the default webcam and applies a WebGL filter to it
- That means that the default webcam can be the last used webcam in the system, if there are several
- Change filters in js/media-devices.js
Tested with
- Hangouts
- Meet
- Zoom
- Doesn't seem to work on Duo
Security concerns, what if a bad actor wants to capture and broadcast the stream:
- The browser will tell the user that they're using a developer extension (a bit weak as security measures go)
- The webcam light will still turn on. Doesn't solve if the actor is active during a valid video call, though.
- I guess it's possible -and probably easy- to stream from an extension to another server. Nothing is preventing any extension creator from doing it right now, without a virtual webcam. Just MitM and record.
Ideas:
- Shader editor
- Youtube video to replace feed
- Add ML like FaceMesh or other feature detection systems:
- add privacy bar over eyes
- Try to stream from a canvas in a page (shader editor, drawing, etc.) as a MediaSource.
# License
This project is licensed under the [CC-BY-4.0 License](https://creativecommons.org/licenses/by/4.0/)