The team encourages developers to start using the iframe API rather than Flash so mobile devices that do not support Flash can easily stream YouTube videos. YouTube has offered HTML5 functionality for ...

The HTML5 version of YouTube’s video player has been seeing steady improvements lately and is rapidly approaching feature parity with the Flash version, according ...

I recently pushed out a change that will use the iframe style embedding for YouTube videos. So it should use the HTML5 video if you have opted into YouTube's HTML5 trial. This will only be used for ...