cloudup_oembed_provider
// Register oEmbed providers function cloudup_oembed_provider() { wp_oembed_add_provider( '#https?://(www.)?cloudup.com/.*#i', 'https://cloudup.com/oembed/', true ); } // Hook into the 'init' action add_action( 'init', 'cloudup_oembed_provider' );