if you go into your (youtube) account settings>playback set up,you can choose "I have a fast connection. Always play higher-quality video when it's available".then save the changes.Youtube will probably give you the "Watch in High Quality" option.
if you go into your (youtube) account settings>playback set up,you can choose "I have a fast connection. Always play higher-quality video when it's available".then save the changes.
the default playback will now be high quality when it's available 8)