modify: ffmpeg -reconnect 参数兼容问题

src/chongming_stream_manager/__init__.py

@@ -15,6 +15,23 @@ class StreamManager:
         self._semaphore = asyncio.Semaphore(max_streams)
         self._mediamtx_addr = mediamtx_addr
         self._video_path = video_path
+        self._support_reconnect = self._check_reconnect_support()
+        logger.info(f"FFmpeg reconnect support: {self._support_reconnect}")
+    
+    @staticmethod
+    def _check_reconnect_support() -> bool:
+        try:
+            result = subprocess.run(
+                ["ffmpeg", "-h", "full"],
+                capture_output=True,
+                text=True,
+                timeout=5
+            )
+            if result.returncode != 0:
+                return False
+            return bool(re.search(r'^-reconnect\b', result.stdout, re.MULTILINE))
+        except (subprocess.TimeoutExpired, FileNotFoundError):
+            return False
 
     def _is_local_file(self, url: str) -> bool:
         """判断是否为本地文件（绝对路径或相对路径）"""
@@ -35,14 +52,11 @@ class StreamManager:
             ])
         else:
             # ----- RTSP 网络流模式（支持自动重连） -----
-            cmd.extend([
-                "-rtsp_transport", "tcp",
-                "-stimeout", "3000000",   # 3 秒超时
-                "-reconnect", "1",
-                "-reconnect_streamed", "1",
-                "-reconnect_delay_max", "5",
-                "-i", source_url
-            ])
+            base_args = ["-rtsp_transport", "tcp", "-stimeout", "3000000"]
+            if self._support_reconnect:
+                base_args.extend(["-reconnect", "1", "-reconnect_streamed", "1", "-reconnect_delay_max", "5"])
+            cmd.extend(base_args)
+            cmd.extend(["-i", source_url])
 
         # 公共输出部分（流复制，推送到 MediaMTX）
         cmd.extend([