@@ -573,6 +573,7 @@ static const AVClass scale_class = {

     .item_name        = av_default_item_name,

     .option           = scale_options,

     .version          = LIBAVUTIL_VERSION_INT,

+    .category         = AV_CLASS_CATEGORY_FILTER,

     .child_class_next = child_class_next,

 };