Ticket #42643: 42643.2.patch

src/wp-includes/js/mediaelement/wp-mediaelement.js

@@ -44 +44 @@
                                 }
                         };
 
-                        // Only initialize new media elements.
+            /*
+             * Add a custom error handler, this ensures media files can be
+             * downloaded if the player encounters an error.
+             */
+            settings.customError = function ( media, node ) {
+                // Make sure we only fall back to a download link for flash files.
+                if ( -1 !== media.rendererName.indexOf( 'flash' ) || -1 !== media.rendererName.indexOf( 'flv' ) ) {
+                    return '<a href="' + node.src + '">Download ' + node.src.substring(node.src.lastIndexOf('/') + 1) + '</a>';
+                }
+                        };
+
+            // Only initialize new media elements.
                         $( '.wp-audio-shortcode, .wp-video-shortcode' )
                                 .not( '.mejs-container' )
                                 .filter(function () {