How To Watch YouTube Videos in a HIGH DEFINITON?

[-Fatos.]

How to watch YouTUbe videos in a HIGHDEFINITION ?
You can watch them if you add this &fmt=18 at the end of the link of the video
for example the LINK is http://youtube.com/watch?v=-iihFRzgkl0
IF you wanna watch it in a High Definiton you shpuld just add &fmt=18 at the end http://youtube.com/watch?v=-iihFRzgkl0&fmt=18

 

[kobaj]

Surly this cant be real. Whenever you upload a video to youtube it is permanently converted to crap quality. Yeah I do see down at the bottom whenever you make the link &fmt=18 "watch in lower quality for faster loading". But frankly I dont see a difference in quality while trying it on several different videos. Thanks for sharing though, Ill play around with it some more.

Perhaps it does work, but only with certain videos?

 

[mega10169]

I noticed a few days ago this video http://youtube.com/watch?v=36Xt-XeWnHM has an option to watch in a higher quality but if you compare the links you can see that nothing happens when you click the link other than the text changes.