How can I force youtube to autoplay in the highest quality (fmt=22)

How can I force youtube to autoplay in the highest quality (fmt=22) For example if I do a youtube search for a "random video" I get directed to a url like:
Asked by: Guest \| Views: 261

Total answers/comments: 2

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Guest [Entry]

You can't if they aren't available! Other than that you can choose in your profile to always show videos in the highest quality available:

Guest [Entry]

If you're logged into youtube, there's an option to always play high quality videos. If you go to settings you'll find the option here.