Update app.py

Add GPU debug prints

app.py

@@ -68,6 +68,9 @@ def save_video(video_frames, fps=25):
 @spaces.GPU()
 def generate_video_pipeline(pipeline, prompt, negative_prompt, num_frames, height, width, num_inference_steps):
     """Generate video using the pipeline"""
+    print(f"Is CUDA available: {torch.cuda.is_available()}")
+    print(f"CUDA device: {torch.cuda.get_device_name(torch.cuda.current_device())}")
+    
     # Move to appropriate device
     print("Moving to device")
     device = torch.device("cuda" if torch.cuda.is_available() else "cpu")