From my above comment:
Thanks. Hopefully in the future they implement easier click to play in the browser just like they did with flash and other plugins. Everyone wants to shove their autoplaying ads.
Unfortunately, it does not always work, maybe 80-90% of the time. I like flash anyway, smaller performance impact and it can be easily blocked, thus I also use Flash® Player for YouTube™ since half of the videos on webpages are youtube videos, it makes it easier to block replaced HTML5 videos.
The HLML 5 hype has been disappointing when it comes to performance. And the inability to disable auto play natively, even the addon doesn't work all the time like you said. No way to disable html 5 auto load altogether without breaking the video player.Only advantage is security I guess.
HTML5 is pushed by Google, Facebook and etc, because it can not be blocked, thus videos and ADs are unavoidable. Security, well that is like saying that linux is more secure than Windows, it is, because linux runs on 1% of computers, but once HTML5 will become more spread, it will change. The security reason is only PR, like with powershell over CMD, the more and more malware use it each year. Even if you have an unpatched flash, you are protected by a simple flashblock, but with HTML5, you have to hold your fingers and hope, that your security setup will take care of any vulnerabilities.
