初版ui提交

Assets/Scripts/Utils/Utils.cs

@@ -472,7 +472,7 @@ namespace Assets.Scripts
             {
                 Directory.CreateDirectory(path);
             }
-            var filepath= path+$"/{fileName}.mp4";
+            var filepath= path+$"/{fileName}";
             if (File.Exists(filepath))
             {
                 local = filepath;