Add timeout for recorder stop retries

Introduce a configurable `RECORD_STOP_RETRY_TIMEOUT` in `config.py` and enforce it in the recording stop worker. The stop loop now tracks cumulative wait time, logs a timeout error, and raises a runtime error if recorders cannot be stopped within the configured limit, preventing indefinite retry loops during shutdown.

Author: C-Achard

dlclivegui/config.py

@@ -28,6 +28,7 @@
 ALLOWED_VIDEO_CONTAINERS: set[str] = {"mp4", "avi", "mov"}
 DEFAULT_RECORDING_CONTAINER: str = "mp4"
 RECORD_STOP_RETRY_INTERVAL: float = 0.25
+RECORD_STOP_RETRY_TIMEOUT: float = 5.0
 
 
 ## Debug

dlclivegui/gui/main_window.py

@@ -55,6 +55,7 @@
     DLC_DO_LOG_TIMING,
     GUI_MAX_DISPLAY_FPS,
     RECORD_STOP_RETRY_INTERVAL,
+    RECORD_STOP_RETRY_TIMEOUT,
     ApplicationSettings,
     BoundingBoxSettings,
     CameraSettings,
@@ -1652,10 +1653,15 @@ def _stop_multi_camera_recording(self) -> None:
             logger.exception("Failed to disable recording frame emission")
 
         def worker():
+            total_wait_time = 0.0
             try:
                 while not self._rec_manager.stop_all():
                     logger.info("Retrying recorder stop...")
                     time.sleep(RECORD_STOP_RETRY_INTERVAL)
+                    total_wait_time += RECORD_STOP_RETRY_INTERVAL
+                    if total_wait_time >= RECORD_STOP_RETRY_TIMEOUT:
+                        logger.error("Timeout while stopping recording after %.1f seconds", total_wait_time)
+                        raise RuntimeError("Could not stop recording within timeout period.")
             except Exception as e:
                 logger.exception("Error while stopping recording: %s", e)
                 return