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Upload nfbvideoplugin to your plugin directory wp-content/plugins/nfbvideoplugin

Go to the Plug-ins tab in your administration panel and activate the plugin.

Take a page from the NFB or Vimeo for example : http://www.nfb.ca/film/waterlife_trailer/ or http://vimeo.com/3365942

Paste the URL into your post.

Adjust your settings in the Settings->NFB Video Settings panel.