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Moves the controls under the video and makes the UI look like it was before august 2015
< Commentaires sur Youtube UI Fix
I've added an extra option (https://www.youtube.com/account_playback) to autohide the control in non fullscreen mode: 
th :)
a little feature request
I would like the progress bar to be hidden when you're not in fullscreen because I use other scripts that makes the video fit the width of my screen