YouTube has announced that it’s going “higher def”:

We’re making these streams available on certain videos, based upon the source file uploaded to us, and over time you’ll find a greater percentage of the library is available to view in higher quality. This feature applies to all eligible videos uploaded from the YouTube community, and is not restricted to partner content, so everyone can enjoy this upgrade.

How do you watch higher quality videos? On your Account page you’re now able to choose “always show me higher quality when available” or “never show me higher quality.” We suggest you select “always show me…” only if you have a fast internet connection, otherwise you might find that videos don’t play as quickly or smoothly as you’re used to. Higher quality videos also have a link right below the video player which will allow you to select between the normal or higher quality settings.

YouTube is putting usability over image quality, though:

Our general philosophy is to make sure that as many people as possible can access YouTube and that videos start quickly and play smoothly. That’s one reason why you don’t see us racing to call this “Super Duper YouTube HD,” because most people don’t want to wait a long time for videos to play.