>The term “High Quality” has to be taken with a bucket of salt when we’re talking about YouTube, but there’s an easy way to at least lessen the compression artifacts, which is especially useful for full-screen viewing. Even a lot of clips that don’t have the “Watch in High Quality” link on the page actually exists in a less compressed version.
Every time you’re at YouTube you can just click the bookmark to see the clip with less compression (if it’s available, otherwise the standard clip will play.)
See the difference for yourself:
If you embed videos, you can do the same thing and even embed a larger version, but you have to append &ap=%2526fmt%3D18 to both URL’s in the code, plus change the sizes in both places to 480 by 360.
You can also watch YouTube videos with QuickTime embedded player if you’d like, and easily download the clips (if you have QuickTime Player Pro.)