<!DOCTYPE html> <html> <head> <script> window.addEventListener('load', () => { const canvas = document.createElement('canvas') canvas.getContext('2d', {}) const stream = canvas.captureStream(5.908449372916826) const track = stream.getTracks()[0] const video = document.createElement('video') document.documentElement.appendChild(video) video.srcObject = stream track.enabled = false }) </script> </head> </html>