code: def merge_ndarray(x):
      import numpy as np
  
      return np.concatenate(x).reshape(-1, x[0].shape[0])
  
file_path: towhee/towhee/pipelines/video_embedding.py
imports: from typing import Optional
  from pydantic import BaseModel
  from towhee import ops, pipe, AutoPipes, AutoConfig
label_desc: Use image node_id 1 for calling a global function with example usage: merge_ndarray(x) and returns: np