No-one really likes when their Mac’s fan decides to emulate a jet engine after you’ve been watching YouTube for a while because Flash has been running. It is particularly frustrating when you know that YouTube has been rolling out an experimental HTML5 video player that could work perfectly in Safari. Thankfully a new Safari plug-in, FlashtoHTML5, forces Safari to use that HTML5 YouTube whenever available (which is most of the time).
The plug-in from Juris Vervuurt will automatically choose the maximum video resolution available, up to 4K, although this can be manually changed. There are three minor caveats with FlashtoHTML5: this plug-in only works for Safari, not all YouTube videos yet support the HTML5 version and subtitles and captions do not work in the HTML5 version. You can download FlashtoHTML5 for free.
[Via 9to5 Mac]
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