FluidVids.js is a javascript alternative to FitVids.js, fluid width video embeds, faster more efficient code.
The demo includes both a YouTube and Vimeo iframe embed, both at different aspect ratios. Both fluid, both 100% width.
FluidVids.js tested in Chrome, FireFox, Opera, Safari, IE7, IE8 and IE9.
FitVids.JS is a lightweight, easy-to-use jQuery plugin for fluid width video embeds.