They may have developed a plugin/extension that wraps HTML5 video element and gives them streaming capabilities, probably with no data accessible as plaintext.

They may have developed a plugin/extension that wraps HTML5 video element and gives them streaming capabilities, probably with no data accessible as plaintext. The work on streaming for HTML5 is already being done, for example: http://goo.gl/9OJSc http://goo.gl/9OJSc.