Diberi peringkat 5 dari 5
it is effective, only changes the actual YouTube videos, works instantly, does not slow down the computer or hold up load time, allows for HTML5 to pre-load videos much of the way, enables you to still adjust your bit rate and play speed settings, and has no issues, at all. AND all of this with just the click of a button - no restart of firefox or your computer. Every video page you go to after clicking the button automatically uses HTML5, which is perfect for FireFox. WiN!
Please, everyone, help to make this one more popular. There are a lot of others that claim to allow Flash or HTML5, but none of them work as smoothly as this, which allows you to choose which ever of these two with smooth workings from a single click.