The Easiest Way to Free Download HTML5 Video on Mac and Windows. We’ll stop supporting this browser soon. Update it to get the best YouTube experience and our latest features. Learn more Google Chrome. HTML5 articles on MacRumors.com. Amazon Prime Video's HTML5 video player now supports Safari on Mac, as spotted by Reddit user netmute over the weekend.
HTML5 is built-in to Safari, it may depend on the website you are accessing on whether it is used. For YouTube you may need to first visit the following URL to 'turn on' HTML5 for YouTube.
Html5 For Youtube
When HTML5 was new Safari was one of the better web-browsers in terms of supporting it, however sadly it seems that Apple have neglected this and according to some reports have not kept up with newer changes in the HTML5 spec. This should not prevent playing (most) HTML5 video content though.
You can test HTML5 video support here - http://www.quirksmode.org/html5/tests/video.html
You can test HTML5 general compatibility here - https://html5test.com/index.html even Safari 10 scores much lower than the current Google Chrome and Firefox browsers. 😟
Safari only supports H.264 and does not support OGG/Theodora or WEBM however H.264 is far, far more common and is what YouTube and Netflix use as examples.
Html5 Youtube For Mac Catalina
Html5 Youtube Video
Nov 7, 2016 2:57 AM