Refactor MediaMTX configuration and enhance RTSP streaming logging

- Removed outdated timeout settings from MediaMTX configuration for improved stream handling.
- Updated CameraStreamer class to include detailed logging for RTSP streaming state and frame dimension checks.
- Added environment variable support for configuring MediaMTX host, enhancing flexibility in deployment.

camera-management-api/usda_vision_system/camera/streamer.py

@@ -86,6 +86,9 @@ class CameraStreamer:
         
         # RTSP settings
         self.rtsp_fps = 15.0  # RTSP FPS (can be higher than MJPEG preview)
+        # Use MEDIAMTX_HOST env var if set, otherwise default to localhost
+        # Note: If API uses network_mode: host, MediaMTX container ports are exposed to host
+        # So localhost should work, but MediaMTX must be accessible on that port
         self.rtsp_host = os.getenv("MEDIAMTX_HOST", "localhost")
         self.rtsp_port = int(os.getenv("MEDIAMTX_RTSP_PORT", "8554"))
         self._rtsp_process: Optional[subprocess.Popen] = None
@@ -525,15 +528,27 @@ class CameraStreamer:
         # Wait for frame dimensions to be set
         timeout = 10.0  # Wait up to 10 seconds for first frame
         start_time = time.time()
+        self.logger.info(f"Waiting for frame dimensions (current: {self._rtsp_frame_width}x{self._rtsp_frame_height})...")
         while self._rtsp_frame_width == 0 and (time.time() - start_time) < timeout:
             if self._stop_rtsp_event.is_set():
+                self.logger.info("RTSP streaming stopped before frame dimensions were available")
                 return
-            time.sleep(0.1)
+            # Check if streaming is actually producing frames
+            if not self.streaming:
+                self.logger.error("Camera streaming stopped, cannot start RTSP")
+                self.rtsp_streaming = False
+                return
+            time.sleep(0.5)
+            elapsed = time.time() - start_time
+            if elapsed > 2 and int(elapsed) % 2 == 0:  # Log every 2 seconds
+                self.logger.debug(f"Still waiting for frame dimensions... ({elapsed:.1f}s elapsed, queue size: {self._rtsp_frame_queue.qsize()})")
         
         if self._rtsp_frame_width == 0:
-            self.logger.error("Could not determine frame dimensions for RTSP streaming")
+            self.logger.error(f"Could not determine frame dimensions for RTSP streaming after {timeout}s. Stream active: {self.streaming}, Queue size: {self._rtsp_frame_queue.qsize()}")
             self.rtsp_streaming = False
             return
+        
+        self.logger.info(f"Frame dimensions available: {self._rtsp_frame_width}x{self._rtsp_frame_height}")
 
         rtsp_url = f"rtsp://{self.rtsp_host}:{self.rtsp_port}/{self.camera_config.name}"
         self.logger.info(f"Publishing RTSP stream to {rtsp_url} with dimensions {self._rtsp_frame_width}x{self._rtsp_frame_height} @ {self.rtsp_fps}fps")