Just to reply to myself, it seems that they do send encoded video- http://www.reddit.com/r/Android/comments/1j27ro/an_indepth_look_at_how_chromecast_uses_html5/

Just to reply to myself, it seems that they do send encoded video- http://www.reddit.com/r/Android/comments/1j27ro/an_indepth_look_at_how_chromecast_uses_html5/ http://www.reddit.com/r/Android/comments/1j27ro/an_indepth_l... And now people have published the extension of that, which is that you can cast whole screens and arbitrary content just as video streams - http://www.droid-life.com/2013/07/26/tip-chromecast-can-cast-your-entire-desktop-screen-too-not-just-tabs/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+DroidLife+%28Droid+Life%29 http://www.droid-life.com/2013/07/26/tip-chromecast-can-cast...