diff --git a/main.cpp b/main.cpp
index 43a5bc9..9d354f6 100644
--- a/main.cpp
+++ b/main.cpp
@@ -4,7 +4,7 @@
 #include <string>
 
 #define   K_VISION_DIR   "/hard/k_vision"
-#define   AI_VISION_DIR  "/ssd/ai_vision"
+#define   AI_VISION_DIR  "/hard/ai_vision"
 
 namespace fs = boost::filesystem;
 
@@ -132,15 +132,10 @@ std::string get_file_timestamp_str(const std::string& strPath)
     if (strPath.empty())
     {
         return str;
-    }
-    fs::path path(strPath);
-    if (!fs::exists(path))
-    {
-        return str;
-    }
+    }    
     str = path.filename().string();
-    str = str.substr(0, 15);
-    return str;
+    auto strTime = str.substr(0, 15);
+    return strTime;
 }
 
 int main(int argc, char* argv[]) {
@@ -205,7 +200,7 @@ int main(int argc, char* argv[]) {
         auto strName = path.filename().string();
         std::string strPath = std::string(szSaveDir) + strName;
         boost::system::error_code err_code;
-        fs::copy_file(it,strPath,fs::copy_option::overwrite_if_exists, err_code);
+        fs::copy_file(it, strPath, fs::copy_option::overwrite_if_exists, err_code);
         if (err_code.value() == 0)
         {
             ++i;