In the ongoing debate over whether to use Flash or HTML5, Google has weighed in heavily in favor of using HTML5. The engineers at the Google-owned YouTube, however, still prefer Flash, if a company blog item posted Tuesday from the company is any indication.
"While HTML5’s video support enables us to bring most of the content and features of YouTube to computers and other devices that don’t support Flash Player, it does not yet meet all of our needs," said YouTube software engineer John Harding in the post. "Today, Adobe Flash provides the best platform for YouTube’s video distribution requirements."
In short, HTML5 still lacks many of the features needed for video presentation.