Due to some problems with the WordPress image editor there needed to be a quick update for the plugin. But because AJAX was already a planned part of this plugin from the beginning it now shipped with 1.5 on short notice. Now the featured video box behaves even more like the core implementation for featured images. As soon as the featured video url input box loses focus it sends an AJAX request to pull the new video information, display the refreshed video and set the featured image.
Furthermore I added options for enable the videoJS CDN or disable the videoJS JS and/or CSS completely Not everyone uses local videos and those who do might want to use their own scripts. WordPress 3.6 is planned bring better local video capabilities, this might render the use of videoJS unnecessary.