I think HTML5 should be the default output for videos now, not the flash player. Please adjust the flexform to default to html5 video. And at best please don’t use tabs for the definition of the files, it will be easier for editors then. If HTML5 is not the standard, the editor won’t switch it, because he does not know what HTML5 is (or he is too lazy).
I think the flowplayer could also get removed because video js has its own flash fallback integrated.