fixed a bug

video_cleaner.py

@@ -166,6 +166,13 @@ class VideoCleaner:
 
 if __name__ == "__main__":
     import argparse
+    # 设置多进程启动方法为 'spawn'，这在 CUDA 环境下更安全，能避免显存冲突
+    import multiprocessing
+    try:
+        multiprocessing.set_start_method('spawn', force=True)
+    except RuntimeError:
+        pass
+
     parser = argparse.ArgumentParser()
     parser.add_argument("dir", help="Target directory")
     parser.add_argument("--days", type=int, default=30)