I love youtube. I have good internet connection. My screen supports HD. My question is “How to always play YouTube videos in HD – automatically?”

In general, you can’t play YouTube videos in HD automatically with one click.

You have to config your Youtube account:
– Step 1: Choose Youtube Settings
– Step 2: Choose menu Playback. Select: Always choose the best quality for my connection and player size. Check: Always play HD on fullscreen (when available).
Then search HD youtube link, open it and click on player to switch to fullscreen mode.