A while ago, YouTube launched a simple demo of an HTML5-based video player. Recently, we published a blog post on our pre-spring cleaning effort and your number one request was that YouTube do more with HTML5. Today, we're introducing an experimental version of an HTML5-supported player. HTML5 is a new web standard that is gaining popularity rapidly and adds many new features to your web experienc
![Introducing YouTube HTML5 Supported Videos](https://cdn-ak-scissors.b.st-hatena.com/image/square/99d3b5cc070d8230e81157d2b28c6734f6800173/height=288;version=1;width=512/https%3A%2F%2Fblog.youtube%2Fstatic%2Fblog_youtube%2Fimages%2Fyoutube_social_200x200.png)