Limit number of images per prompt to 1 in video generation function

app.py

@@ -272,7 +272,7 @@ def generate_video_from_image(
 
     images = pipeline(
         num_inference_steps=num_inference_steps,
-        num_images_per_prompt=num_images_per_prompt,
+        num_images_per_prompt=1,
         guidance_scale=guidance_scale,
         generator=generator,
         output_type="pt",