From 5d3e7be6908fa5a87dfa2a4c23a703a0f07656a1 Mon Sep 17 00:00:00 2001
From: Scott Taylor <wonderboymusic@git.wordpress.org>
Date: Sun, 6 Apr 2014 21:33:00 +0000
Subject: [PATCH] When dynamically instantiating `MediaElementPlayer` instances
 in JS, `preload="metadata"` is extremely wonky. `preload="none"` lets the
 file play right away.

This has already been addressed for audio|video shortcodes, but also needs to be the case for playlists. When loading a playlist from a DOM cache or via AJAX, and when the sources match those already pre-loaded, the browser will sometimes donkey-punch the HTTP request for the first cached track selected.

Set `preload="none"` for the empty `<audio|video>` tag for playlists.

See commits related to #26779.



git-svn-id: https://develop.svn.wordpress.org/trunk@27974 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/media.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/wp-includes/media.php b/src/wp-includes/media.php
index ba8f530b30..adeaed4ca3 100644
--- a/src/wp-includes/media.php
+++ b/src/wp-includes/media.php
@@ -1269,7 +1269,7 @@ function wp_playlist_shortcode( $attr ) {
 	<?php if ( 'audio' === $type ): ?>
 	<div class="wp-playlist-current-item"></div>
 	<?php endif ?>
-	<<?php echo $safe_type ?> controls="controls" preload="metadata" width="<?php
+	<<?php echo $safe_type ?> controls="controls" preload="none" width="<?php
 		echo (int) $theme_width;
 	?>"<?php if ( 'video' === $safe_type ):
 		echo ' height="', (int) $theme_height, '"';