apparently there's also hints of alpha channel, but basically no support for it outside of chrome's experimental flags: http://updates.html5rocks.com/2013/07/A

apparently there's also hints of alpha channel, but basically no support for it outside of chrome's experimental flags: http://updates.html5rocks.com/2013/07/Alpha-transparency-in-Chrome-video http://updates.html5rocks.com/2013/07/Alpha-transparency-in-...