How to disable the HTML5 player in Firefox and get your Youtube video speed back, especially on older machines playing higher resolutions or fullscreen. At the moment Youtube is testing a HTML5 video player. The background of the story also seems to be that Youtube (Google) wants to push their own WEBM videocontainer format (using VP8 codec) instead of the widely spread and well developed H264. Shame ! Basically HTML5 embedded video is not a bad idea, but the implementation of these video formats and codecs in browsers is optimized for new hardware. As a result older computers can play videos in flash player without problems, but in HTML5 they get big trouble. Issues of HTML5 implementations: 1) on my current computer (quadcore) the HTML5 player is sluggish, video gets out of sync easily. Moving the mouse over the video or any controls makes the video stop for 1 second. 2) on my old notebook (can play blurays) anything higher than 360p stutters terribly, fullscreen is impossible in any resolution (too slow). HTML5 player eats CPU power like candy. But I can watch Youtube 720p or 1080p on my old notebook in flash player without problems. 3) Youtube or the browser do not give you any means to decide which player should be used. 4) with every video the player may change ! so it gets even more difficult to understand where the problem comes from. So if you recently got speed issues in Youtube, then disabling the HTML5 player in Firefox may fix this problem. You can check …
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how to fix Youtube HTML5 vs FLASH speed problem – read the comment !