mlb.tv embed code for a WordPress plugin

gistfile1.php

<?php

function mlbtv_embed_register_handler() {
  wp_embed_register_handler( 'mlbtv', '|https?://wapc.mlb.com/play/\?content_id=([0-9]*)?#?|i', 'mlbtv_embed_handler' );
}

add_action( 'init', 'mlbtv_embed_register_handler' );

function mlbtv_embed_handler( $matches, $attr, $url, $rawattr ) {
	if ( !empty($rawattr['width']) && !empty($rawattr['height']) ) {
		$width  = (int) $rawattr['width'];
		$height = (int) $rawattr['height'];
	} else {
		list( $width, $height ) = wp_expand_dimensions( 400, 224, $attr['width'], $attr['height'] );
	}
	
	return "<iframe src='http://wapc.mlb.com/shared/video/embed/embed.html?content_id={$matches[1]}&width={$width}&height={$height}&property=mlb' width='{$width}' height='{$height}' frameborder='0'>Your browser does not support iframes.</iframe>";
}

thank you very useful
but if you can explain for me how i can add support embed handler for facebook videos and posts?