Post Formats Post Format: Video (WordPress.tv) 3rd June 2010 by Shruti Posted as per the instructions in the Codex.
Post Formats Post Format: Video (VideoPress) 2nd June 2010 by Shruti VideoPress, especially as a video post format, usually provides some unique styling issues. You will need to install Jetpack or Slim Jetpack plugin to turn the shortcode into a viewable video.