diff --git a/src/js/plugins/vimeo.js b/src/js/plugins/vimeo.js
index 91019abf..8df5ad15 100644
--- a/src/js/plugins/vimeo.js
+++ b/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');
diff --git a/src/js/plugins/youtube.js b/src/js/plugins/youtube.js
index 31d22bb4..ba5d8de9 100644
--- a/src/js/plugins/youtube.js
+++ b/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;
                     }