Ticket #24902: 24902.2.diff

wp-includes/media.php

@@ -923 +923 @@
                 $attr_strings[] = $k . '="' . esc_attr( $v ) . '"';
         }
 
-        $html = sprintf( '<audio %s controls="controls">', join( ' ', $attr_strings ) );
+        $html = '';
+        if ( 'mediaelement' === $library && 1 === $instances )
+                $html .= "<!--[if lt IE 9]><script>document.createElement('audio');</script><![endif]-->\n";
+        $html .= sprintf( '<audio %s controls="controls">', join( ' ', $attr_strings ) );
 
         $fileurl = '';
         $source = '<source type="%s" src="%s" />';
@@ -940 +943 @@
                 $html .= wp_mediaelement_fallback( $fileurl );
         $html .= '</audio>';
 
-        return apply_filters( 'wp_audio_shortcode', $html, $atts, $audio, $post_id );
+        return apply_filters( 'wp_audio_shortcode', $html, $atts, $audio, $post_id, $library );
 }
 add_shortcode( 'audio', apply_filters( 'wp_audio_shortcode_handler', 'wp_audio_shortcode' ) );
 
@@ -1061 +1064 @@
                 $attr_strings[] = $k . '="' . esc_attr( $v ) . '"';
         }
 
-        $html = sprintf( '<video %s controls="controls">', join( ' ', $attr_strings ) );
+        $html = '';
+        if ( 'mediaelement' === $library && 1 === $instances )
+                $html .= "<!--[if lt IE 9]><script>document.createElement('video');</script><![endif]-->\n";
+        $html .= sprintf( '<video %s controls="controls">', join( ' ', $attr_strings ) );
 
         $fileurl = '';
         $source = '<source type="%s" src="%s" />';
@@ -1081 +1087 @@
         $html .= '</video>';
 
         $html = sprintf( '<div style="width: %dpx; max-width: 100%%;">%s</div>', $width, $html );
-        return apply_filters( 'wp_video_shortcode', $html, $atts, $video, $post_id );
+        return apply_filters( 'wp_video_shortcode', $html, $atts, $video, $post_id, $library );
 }
 add_shortcode( 'video', apply_filters( 'wp_video_shortcode_handler', 'wp_video_shortcode' ) );