Can I Record the Images Captured by a HiLens Kit Camera or the Skill Running Result for Storage?

Yes. You can use OpenCV VideoWriter. Note that the video must be in MJPG format. The reference code is as follows:

  camera = hilens.VideoCapture() 

  fps = 20 
  size = (1280, 720) 
  format = cv2.VideoWriter_fourcc('M','J','P','G') 
  writer = cv2.VideoWriter("output.avi", format, fps, size) 

  count = 0 
  duration = 100 # Duration of the video
  while True: 
      input_nv21 = camera.read()

      input_bgr = cv2.cvtColor(input_nv21, cv2.COLOR_YUV2BGR_NV21) 
      writer.write(input_bgr)

      if count >= fps * duration: 
          break
      count += 1 
  writer.release()