Netflix no longer requires Silverlight in Chrome.
I wonder why haven't they moved all systems/browsers to it if their html5 player side and content is up to speed? I usually watch in Safari because I work in Chrome/Firefox for dev typically.
We switched from VC-1 to H.264 a few years ago, so the encodes don't change with the switch from Silverlight to HTML5 video.
Currently just IE 11, Chrome, and Safari 8 in Yosemite support our HTML5 player. It depends on three new APIs in HTML5: MSE, EME, WebCrypto.
Shameless plug: I'm currently hiring for the engineering manager of the team that builds our HTML5 streaming video player. http://jobs.netflix.com/jobs.php?id=NFX01593