#615: updates to vimeo and youtube plugins to ensure that loading classes are added as content is buffering

src/js/plugins/vimeo.js

@@ -335,6 +335,14 @@ const vimeo = {
             }
         });
 
+        player.embed.on('bufferstart', () => {
+            triggerEvent.call(player, player.media, 'waiting');
+        });
+
+        player.embed.on('bufferend', () => {
+            triggerEvent.call(player, player.media, 'playing');
+        });
+
         player.embed.on('play', () => {
             assurePlaybackState.call(player, true);
             triggerEvent.call(player, player.media, 'playing');

src/js/plugins/youtube.js

@@ -416,6 +416,12 @@ const youtube = {
 
                             break;
 
+                        case 3:
+                            // Trigger waiting event to add loading classes to container as the video buffers.
+                            triggerEvent.call(player, player.media, 'waiting');
+
+                            break;
+
                         default:
                             break;
                     }