A new Safari extension from Joris Vervuurt replaces the YouTube Flash Player with a HTML5 Player and you will also notice that your computer will run cooler and faster. If you use a laptop, you will also notice that the battery life of a fully charged battery will increase and this FlashToHTML5 will also automatically load the video at the highest quality available…………
OS X Lion ships without Flash Player to the delight of fans in support of Apple’s ongoing argument against Adobe’s resource-hungry technology and this leaves us with three choices: Avoid Flash content altogether, switch to Google’s Chrome browser that comes with the latest version of Flash Player built-in or just install the darn thing and deal with consequences later. The FlashtoHTML5 extension from Joris Vervuurt was Godsent, which replaces the CPU-hogging YouTube Flash Player with an HTML5 video player. YouTube has had an experimental HTML5 video player available for some time now, but Vervuurt’s dedicated extension beats YouTube’s solution on ease of use and the ability to choose maximum video resolution (360p, 720p, 1080p and 4K), plus it works with Flash videos embedded on other sites. One caveat: The extension depends upon whether or not YouTube has HTML5-friendly counterparts of Flash videos available on its servers. The FlashtoHTML5 extension is available here. The 9KB download requires Safari 5 and works like a charm under OS X Lion, especially used withClick2Flash, a Flash-blocking plug-in for Safari.
The extension automatically loads an HTML5 version of the video, although you’re still being advised to upgrade to Flash Player for “improved playback performance”