diff --git a/video_cleaner.py b/video_cleaner.py
index 5643bda..5dbc38e 100644
--- a/video_cleaner.py
+++ b/video_cleaner.py
@@ -156,33 +156,28 @@ class VideoCleaner:
         
         print(f"Scanning {input_path}...")
         
-        while True:
-            all_videos = []
-            # 每次循环都获取最新列表
-            for root, dirs, files in os.walk(input_path):
-                if "processed" in dirs: dirs.remove("processed")
-                for file in files:
-                    if file.lower().endswith(self.supported_extensions):
-                        full_path = Path(root) / file
-                        all_videos.append(full_path)
+        # 逐个目录递归处理，避免一次性加载所有文件到内存
+        for root, dirs, files in os.walk(input_path):
+            if "processed" in dirs: 
+                dirs.remove("processed")
             
-            if not all_videos:
-                print("No more files to process. Exiting.")
-                break
+            # 筛选当前目录下的视频文件
+            current_dir_videos = []
+            for file in files:
+                if file.lower().endswith(self.supported_extensions):
+                    current_dir_videos.append(Path(root) / file)
             
-            # 按修改时间排序，取最旧的一个
-            all_videos.sort(key=lambda x: os.path.getmtime(x))
+            if not current_dir_videos:
+                continue
+
+            # 对当前目录的文件按时间排序处理
+            current_dir_videos.sort(key=lambda x: os.path.getmtime(x))
             
-            processed_in_this_loop = False
-            for target_file in all_videos:
-                if self.process_video_file(target_file, processed_dir, input_path):
-                    processed_in_this_loop = True
-                    break # 处理了一个，重新获取列表
-            
-            if not processed_in_this_loop:
-                # 如果列表里剩下的所有文件都还没到 30 天，那就退出
-                print("All remaining files are newer than the age limit. Exiting.")
-                break
+            print(f"Processing directory: {root} ({len(current_dir_videos)} files)")
+            for target_file in current_dir_videos:
+                # 处理文件。如果 process_video_file 返回 False，
+                # 通常是因为文件太新（未到 30 天），则跳过当前文件
+                self.process_video_file(target_file, processed_dir, input_path)
 
 if __name__ == "__main__":
     import argparse