The Open Graph plugin inserts the Open Graph metadata into page head section and provides filters for other plugins and themes to override this data, or to provide additional Open Graph data.
No configuration, pure power.
Plugin grabs data from content and if contains YouTube URL, then plugin try to get movie thumbnail and use it in og:image.
If the post contains YouTube or Vimeo links, this plugin saves as post meta video thumbnail link and add it to og:image as post thumbnail.
Rich filters implementation to allow data change.