HTML5 based CMS like joomla
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I am very much new to we development. Currently I am trying to build up a site to host multiple videos in different categories. The site should support user login, playlist based on user, sorting of videos based on user profile, comments and rating for videos. I was thinking of using CMS like joomla but not sure if it would be a good idea to develop using php based system. Is there any html5 based CMS which is as powerful/enrich like joomla? Is there any other option to build such a site? Please suggest. Any new ideas/direction is very much welcome.

Thanks in advance