Update index.html

index.html

@@ -880,7 +880,7 @@ function setupFramePreview() {
     
     // フレームを取得
     VideoForThumbnail.currentTime = previewTime;
-    
+    VideoForThumbnail.crossOrigin = 'anonymous';
     VideoForThumbnail.addEventListener('seeked', function() {
       canvas.width = VideoForThumbnail.videoWidth;
       canvas.height = VideoForThumbnail.videoHeight;