YouTube, find HD videos only

Hello folks,

I know that if you want YouTube to show only HD videos, you put HD in search box along with the search code. But, I am noticing that it seems to scan the title of the video and not really the resolutions available. There are so many videos with HD in the title but are not HD, when casted on HDTV.

I have checked many videos and when I check the options of suspected videos, they are max 480p, thus I concluded the statement above.

Any idea how one can find ONLY HD videos?

Thanks in advance.