diff --git a/app/assets/javascripts/discourse/app/instance-initializers/video-placeholder.js b/app/assets/javascripts/discourse/app/instance-initializers/video-placeholder.js
index 32201ba9f1d..9deb040a700 100644
--- a/app/assets/javascripts/discourse/app/instance-initializers/video-placeholder.js
+++ b/app/assets/javascripts/discourse/app/instance-initializers/video-placeholder.js
@@ -67,6 +67,7 @@ export default {
           wrapper.remove();
           video.style.display = "";
           parentDiv.classList.remove("video-placeholder-container");
+          parentDiv.style.backgroundImage = "none";
         });
       }
 
diff --git a/app/assets/stylesheets/common/base/onebox.scss b/app/assets/stylesheets/common/base/onebox.scss
index 99eeb9c1dcf..7393c5e456b 100644
--- a/app/assets/stylesheets/common/base/onebox.scss
+++ b/app/assets/stylesheets/common/base/onebox.scss
@@ -927,6 +927,7 @@ aside.onebox.mixcloud-preview {
   position: relative;
   padding: 0 0 56.25% 0;
   width: 100%;
+  background-color: black;
 
   video {
     position: absolute;