Use the default HTML5 video player on YouTube™
A simple Chrome extension that gives you the option to use the default HTML5 video player on YouTube.
Remember to go to chrome://extensions and check out the options page after you install.
If you have any problems or question please use the "Send Feedback" link in the "Details" tab.
* This does not replicate every YouTube feature. The default video player is bare bones and this is just an option for those who want it.
* Due to recent changes to YouTube only MP4 360p, MP4 720p and WebM 360p videos are available when using this extension.
* Some videos are protected and do not work with this extension (VEVO etc).
source code - http://goo.gl/vIKKU