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When I watch this youtube video - http://www.youtube.com/watch?v=KqnB2Ew0SFM&feature=BFa&list=WL2AA75EB885F2A4B4 it's in flash.

But when I click on http://www.youtube.com/watch?v=LD3ywXEydyk - that video is in html5.

Why are some videos in flash and some in html5? Also how can I force html5 for videos (for example, when I want to use the speed-up feature)?

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2 Answers 2

up vote 3 down vote accepted

The issue with the first example is that you are not going straight to the video. Instead of watching as part of a playlist, view the video only: http://youtu.be/KqnB2Ew0SFM

This is the full URL: http://www.youtube.com/watch?v=KqnB2Ew0SFM Now you'll get all the features supported by HTML5.

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You can do this by changing the url with ANY video.

Simply take the video id (like the KqnB2Ew0SFM above in the 1st answer

and add it after this: http://www.youtube.com/watch_popup?v=

(getting http://www.youtube.com/watch_popup?v=KqnB2Ew0SFM if using that video)

This way, the video takes up your whole screen and is forced to play in HTML5 (well, just make sure you're in the HTML5 player trial to begin with, if you aren't already...you can opt-in by going to www.youtube.com/html5)

Enjoy!!

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