A lot of videos don't have an HQ icon to watch them in HQ. But it doesn't mean you can't watch them in HQ. You just type "&fmt=18" at the end of the adress and you'll watch every clip in HD.

For example:

You have a video which don't have that option: no hotlinking
And here you go with the parameter added at the end of the adress: no hotlinking
Check it for yourselves to make sure it works. It also works great for songs, audio quality improves a lot too of course.

And sorry if it's the wrong forum for that but it seemed the best to put it here.
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