I’ve been experimenting a lot with HTML 5 webcam support lately. One of the results – the audience on a galloping horse could be seen in my Next. Generation. Browser. Graphics. talk at Spa conference 2012.
Photobooth.js is a bit more useful: It’s a widget / jQuery plugin that allows the user to take pictures directly on your website. It also offers real-time adjustments for hue, saturation and brightness and the ability to crop the image.
Download, Demo and Docs can be found HERE.