fixing video generation pipeline

Modules/Generate_Video.py

@@ -59,7 +59,7 @@ def Generate_Video(
     width: Annotated[int, "Output width in pixels (multiples of 8 recommended)."] = 768,
     height: Annotated[int, "Output height in pixels (multiples of 8 recommended)."] = 768,
     fps: Annotated[int, "Frames per second of the output video (e.g., 24)."] = 24,
-    duration: Annotated[float, "Target duration in seconds (provider/model dependent, commonly 2–6s)."] = 4.0,
+    duration: Annotated[float, "Target duration in seconds. For Sora-2, must be 4, 8, or 12."] = 4.0,
 ) -> str:
     _log_call_start(
         "Generate_Video",
@@ -111,10 +111,10 @@ def Generate_Video(
                     extra_body=extra_body if extra_body else None,
                 )
             else:
-                result = client.post(
-                    model=model_id,
-                    json={"inputs": prompt, "parameters": {k: v for k, v in parameters.items() if v is not None}},
-                )
+                # Fallback for older clients or specific providers if needed, though InferenceClient usually has text_to_video
+                # Note: client.post is not available in some versions of InferenceClient
+                continue 
+            
             path = _write_video_tmp(result, suffix=".mp4")
             try:
                 size = os.path.getsize(path)
@@ -122,6 +122,13 @@ def Generate_Video(
                 size = -1
             _log_call_end("Generate_Video", f"provider={provider} path={os.path.basename(path)} bytes={size}")
             return path
+        except KeyError as exc:
+            # Handle specific provider errors that manifest as KeyError (e.g. fal-ai missing 'video' key on error)
+            if "video" in str(exc):
+                last_error = ValueError(f"Provider {provider} returned an invalid response. This often happens with invalid parameters (e.g. duration must be 4, 8, or 12 for Sora-2).")
+            else:
+                last_error = exc
+            continue
         except Exception as exc:  # pylint: disable=broad-except
             last_error = exc
             continue