WordPress oEmbed filters

wp-oembed-filter.php

// usage on page:
// echo wp_oembed_get('https://www.youtube.com/watch?v=123qweasd', array('width'=>458, 'autoplay'=>0, 'rel'=>0, 'showinfo'=>0 ));

// add parameters to oembed
add_filter('oembed_result','lc_oembed_result', 10, 3);
function lc_oembed_result($html, $url, $args) {

    // $args includes custom argument

	$newargs = $args;
	// get rid of discover=true argument
	array_pop( $newargs );

	$parameters = http_build_query( $newargs );

	// Modify video parameters
	$html = str_replace( '?feature=oembed', '?feature=oembed'.'&'.$parameters, $html );

    return $html;
}