Update VALIDATE_INPUTS in VideoAnalyzerWithAudio

Implemented a hybrid validation logic in the `VALIDATE_INPUTS` method of `VideoAnalyzerWithAudio`.
This bypasses the strict `os.path.exists()` check if the optional dynamic input (`opt_video_path`) is connected, allowing ComfyUI to start the workflow and wait for upstream nodes (like downloaders) to create the file at runtime.
Strict physical file validation is maintained for the standard manual video upload widget.

video.py

@@ -64,20 +64,19 @@ class VideoAnalyzerWithAudio:
         return time.time()
 
     @classmethod
-    def VALIDATE_INPUTS(cls, video, **kwargs):
-        opt_video_path = kwargs.get("opt_video_path", None)
-        if opt_video_path is not None:
-            video_name = opt_video_path[0] if isinstance(opt_video_path, (list, tuple)) else opt_video_path
-        else:
-            video_name = video[0] if isinstance(video, (list, tuple)) else video
+    def VALIDATE_INPUTS(cls, **kwargs):
+        # 1. Bypass dinámico: Si el puerto opcional está conectado, delegamos la existencia al tiempo de ejecución
+        if "opt_video_path" in kwargs and kwargs["opt_video_path"] is not None:
+            return True
 
-        if os.path.exists(video_name):
-            video_path = video_name
-        else:
-            video_path = folder_paths.get_annotated_filepath(video_name)
+        # 2. Validación estricta UX: Si se usa el widget manual estándar, verificamos físicamente el archivo
+        if "video" in kwargs:
+            video_val = kwargs["video"]
+            if isinstance(video_val, str):
+                video_path = folder_paths.get_annotated_filepath(video_val)
+                if not os.path.exists(video_path):
+                    return f"❌ El archivo de video no existe en: {video_path}"
 
-        if not os.path.exists(video_path):
-            return f"❌ El archivo de video no existe en: {video_path}"
         return True
 
     def analyze(self, video, reference_frame_idx, use_face_detector, blur_threshold, opt_video_path=None, **kwargs):