add_action('init', 'dcc_rewrite_tags'); function dcc_rewrite_tags() { add_rewrite_tag('%video_id%', '([^&]+)'); } add_action('init', 'dcc_rewrite_rules'); function dcc_rewrite_rules() { add_rewrite_rule('^watch/(.+)/?$','index.php?pagename=watch&video_id=$matches[1]','top'); }