Update app.py

app.py

@@ -644,13 +644,13 @@ def generate_video(
     last_image,
     input_audio,
     prompt: str,
-    duration: float,
+    duration: float = 0.0,
     gpu_duration: float,
     enhance_prompt: bool = True,
     seed: int = 42,
     randomize_seed: bool = True,
-    height: int = 1024,
-    width: int = 1536,
+    height: int = 0.0,
+    width: int = 0.0,
     pose_strength: float = 0.0,
     general_strength: float = 0.0,
     motion_strength: float = 0.0,