Snap Camera is a freshly-launched desktop app that adds Snapchat Lenses to webcam feeds for vlogging or Twitch streams. Like all similar things Snap, it relies on facial mapping to super-impose a range of effects on a video's subject. Snap Camera is available for download now
https://www.notebookcheck.net/New-app-brings-Snapchat-filters-to-Twitch.347066.0.html