I would be interested in tagging YouTube videos that I publish on my WordPress blog to be automatically tagged as og:video if they are inserted in a post–is there any plugin or simplified way to do this? I realize I could edit the meta tags for each post, but I’m looking for a more elegant solution to the problem?
Using Open Graph to define videos on WordPress?
This plugin may work for what you’re describing:
http://wordpress.org/extend/plugins/meta-ographr/