diff -up wordpress/wp-includes/js/mediaelement/mediaelement-and-player.js.no wordpress/wp-includes/js/mediaelement/mediaelement-and-player.js
--- wordpress/wp-includes/js/mediaelement/mediaelement-and-player.js.no	2019-10-08 18:06:02.000000000 +0200
+++ wordpress/wp-includes/js/mediaelement/mediaelement-and-player.js	2019-11-13 07:59:39.418787150 +0100
@@ -6410,6 +6410,7 @@ if (hasFlash) {
 		}
 	});
 
+/* swf files removed from RPM
 	var FlashMediaElementVideoRenderer = {
 		name: 'flash_video',
 		options: {
@@ -6494,6 +6495,7 @@ if (hasFlash) {
 		create: FlashMediaElementRenderer.create
 	};
 	_renderer.renderer.add(FlashMediaElementAudioOggRenderer);
+*/
 }
 
 },{"10":10,"2":2,"27":27,"29":29,"3":3,"30":30,"7":7,"9":9}],23:[function(_dereq_,module,exports){
diff -up wordpress/wp-includes/js/mediaelement/mediaelement.js.no wordpress/wp-includes/js/mediaelement/mediaelement.js
--- wordpress/wp-includes/js/mediaelement/mediaelement.js.no	2019-10-08 18:06:02.000000000 +0200
+++ wordpress/wp-includes/js/mediaelement/mediaelement.js	2019-11-13 07:59:45.601728069 +0100
@@ -2108,6 +2108,7 @@ if (hasFlash) {
 		}
 	});
 
+/* swf files removed from RPM
 	var FlashMediaElementVideoRenderer = {
 		name: 'flash_video',
 		options: {
@@ -2192,6 +2193,7 @@ if (hasFlash) {
 		create: FlashMediaElementRenderer.create
 	};
 	_renderer.renderer.add(FlashMediaElementAudioOggRenderer);
+*/
 }
 
 },{"10":10,"18":18,"2":2,"20":20,"21":21,"3":3,"7":7,"9":9}],14:[function(_dereq_,module,exports){