Cannot play VP9 video on youtube.
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A Former User last edited byI have enabled VP9 in youtube and also VP8 in opera flags in Opera 19 but Opera still does not play VP9 videos in youtube. The same video plays in VP9 in Chrome. 
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Deleted User last edited byPlease check, if Opera plays VP9 on http://base-n.de/webm/VP9 Sample.html (upper video). 
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A Former User last edited byI can play the vp9 version in Chrome just fine but Opera plays in the the video in flash player. 
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A Former User last edited byI can play the vp9 version in Chrome just fine but Opera plays in the the video in flash player. 
 YouTube wasn't/isn't serving HTML5 video formats properly to Opera (one issue involving the codec and another involving the resolutions available). Then Opera added a browser.js patch to force YouTube pages to deliver the Flash version of the player as a workaround while YouTube team would fix their site. That's why you're receiving the Flash version. If you disable Flash in opera:plugins you might be able to play the video in the HTML5 version.
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desertoutlaw last edited byDisabling Adobe Acrobat - 11.0.06.70 from opera:plugins permits the JW Player media player, which I embed on http://ultimatetemptations.com and http://fubar.com, to visually appear and play as usual for Version 12.17 
 Build 1863
 Platform Win32
 System Windows 7of Opera. Thank you for posting the suggestion as it worked in my case.