Running on Mac or Linux and tired of Adobe Flash eating up all your CPU cycles while you’re watching YouTube? Buggy plugins that crash your browser and freeze your PC? Proprietary formats that get in the way? Want to embrace HTML5 and the future? Well, now you can… one YouTube video at a time.

We’ve written an HTML 5 Video Viewer for YouTube, and you can use it to browse YouTube in true 21st Century HTML5 quality. And it’s super-simple to use.

Flash has been the bane of online websurfers ever since the 90s, especially on platforms where Adobe doesn’t bother to go the extra mile to ensure that their proprietary, binary implementations are stable and efficient. On Linux and Mac OS X, the flash implementation takes up over half the available CPU and at high-resolutions stuttering occurs. HTML5 poses the answer providing a way for browsers to use the native implementations to render videos directly in the browser without resorting to ActiveX and 3rd-party browser plugins… it just has yet to be embraced.

But now you can uninstall Flash and enjoy your online videos in peace. Just go to http://neosmart.net/YouTube5/ and enter the URL of a video to watch it in the embedded HTML5 viewer. Yes, you can skip, skim, pause, resume away to your heart’s content.

Even better, we’ve written a GreaseMonkey/UserScript to add a link to all YouTube video pages that points to the HTML5 version, leaving you with no excuse to still use the Flash interface!

All modern browsers that support basic HTML5 are supported. You’ll need to have an MP4 decoder installed on your PC. Happy viewing!

Update:

It’s been brought to our attention that Firefox does not support streaming MP4 content due to licensing restrictions, and as we mention above, an MP4 decoder is a minimum requirement.