YouTube co-founder Steve Chen, speaking at the NewTeeVee Live conference today, confirmed that high-quality YouTube video streams are coming soon. Although YouTube"s goal, he said, is to make the site"s vast library of content available to everyone, and that requires a fairly low-bitrate stream, the service is testing a player that detects the speed of the viewer"s Net connection and serves up higher-quality video if viewers want it. Why wouldn"t they? Because the need to buffer the video before it starts playing will change the experience. Hence the experiment, rather than just a rapid rollout of this technology. On stage, he said the current resolution of YouTube videos has been "good enough" for the site untill now.