Change Youtube Video Streaming Quality

Do you know that you could possibly to change streaming Youtube video quality from normal quality to a better quality? I've tested before and it works. Maybe someone out there might already know it for some times and it was nothing new. But i was just discover it yesterday night in some of the forums that I've visited.

Below are some screen shot that I've taken to prove


Just add &fmt=18 at the end of the video url address.

Thanks and enjoy watching in better quality.