You may find that presenter panel videos are blurry in your published output even if you increase the video quality to its highest setting (9) when you publish.
We improved video quality in Update 2 for Articulate Presenter. To take advantage of the new features and fixes, download and install the latest version from the link in your product confirmation email, or get it here. Then republish your project. For even better quality results, delete the existing presenter panel videos from your presentation, import them again, then republish.