Update index.html

index.html

@@ -717,11 +717,10 @@
   document.addEventListener("DOMContentLoaded", function () {
     const previewVideo = document.getElementById("previewVideo");
 
-  });
-
     previewVideo.src = video.src;
     previewVideo.preload = "auto";
 
+  });
     // プログレスバーのイベントリスナーを更新
     progressContainer.addEventListener("mousemove", (e) => {
       if (!video.duration) return;