I wrote an app!
Multihouse gets median scores for multiple URLs for multiple Lighthouse runs.
HTML, CSS and JavaScript feature support across top browsers:
bit.ly/caniuse-stuff
The MediaStream object stream passed to the getUserMedia() callback in this demo is in global scope, so you can inspect it from the console.
This demo attempts to get video with a resolution of 1920x1080px.
For more information, see Capturing Audio & Video in HTML5 on HTML5 Rocks.
View source on GitHub