diff --git a/addons/web_editor/static/src/js/widgets.js b/addons/web_editor/static/src/js/widgets.js
index 6e7a6784351..eb34bd152ca 100644
--- a/addons/web_editor/static/src/js/widgets.js
+++ b/addons/web_editor/static/src/js/widgets.js
@@ -915,7 +915,7 @@ var VideoDialog = Widget.extend({
             video_id = this.$("#video_id").val();
         }
         var $iframe = $(
-            '<div class="media_iframe_video" data-src="'+this.$iframe.attr("src")+'">'+
+            '<div class="media_iframe_video" data-oe-expression="'+this.$iframe.attr("src")+'">'+
                 '<div class="css_editable_mode_display">&nbsp;</div>'+
                 '<div class="media_iframe_video_size" contentEditable="false">&nbsp;</div>'+
                 '<iframe src="'+this.$iframe.attr("src")+'" frameborder="0" allowfullscreen="allowfullscreen" contentEditable="false"></iframe>'+
diff --git a/addons/website/static/src/js/website.snippets.animation.js b/addons/website/static/src/js/website.snippets.animation.js
index 08c78e58c7b..306fe1a4cb0 100644
--- a/addons/website/static/src/js/website.snippets.animation.js
+++ b/addons/website/static/src/js/website.snippets.animation.js
@@ -127,7 +127,8 @@ animation.registry.media_video = animation.Class.extend({
             var size = '<div class="media_iframe_video_size">&nbsp;</div>';
             this.$target.html(editor+size);
         }
-        this.$target.html(this.$target.html()+'<iframe src="'+_.escape(this.$target.data("src"))+'" frameborder="0" allowfullscreen="allowfullscreen"></iframe>');
+        // rebuilding the iframe, from https://www.html5rocks.com/en/tutorials/security/sandboxed-iframes/
+        this.$target.html(this.$target.html()+'<iframe sandbox="allow-scripts allow-same-origin" src="'+_.escape(this.$target.data("oe-expression"))+'" frameborder="0" allowfullscreen="allowfullscreen"></iframe>');
     },
 });