Parse YouTube oEmbed for index pages

Hey guys,

I’m using post formats in my theme, and for video posts I want to embed the video itself on the archive/index pages, with the excerpt underneath. I used to use shortcodes, with the following code on home.php etc.:

$pattern = get_shortcode_regex();
	preg_match('/'.$pattern.'/s', $post->post_content, $matches);
	if (is_array($matches) && $matches[2] == 'youtube') {
	   $shortcode = $matches[0];
	   echo do_shortcode($shortcode);
	}

Which works fine, but now WP4 includes oEmbed, I was looking for a solution that doesn’t require me to manually enter a shortcode in the editor.

Could anyone help me out on this? I’ve been trying for 2 days but no luck so far.