class_docstr: Load MOT dataset with MOT format from video stream.
  Args:
      video_stream (str): path or url of the video file, default ''.
      keep_ori_im (bool): whether to keep original image, default False.
          Set True when used during MOT model inference while saving
          images or video, or used in DeepSORT.
code: def set_kwargs(self, **kwargs):
      self.mixup_epoch = kwargs.get("mixup_epoch", -1)
      self.cutmix_epoch = kwargs.get("cutmix_epoch", -1)
      self.mosaic_epoch = kwargs.get("mosaic_epoch", -1)
  
imports: import numbers
  import os
  import sys
  from collections import deque
  from collections.abc import Mapping
  import six
  from ppdet.core.workspace import register, serializable
  from ppdet.utils.logger import setup_logger
  from ppdet.data.reader import BaseDataLoader, Compose
  import cv2
  from imageio import imread, imwrite
  import numpy
  import paddle
  from paddle.framework import core
label_desc: Use image node_id 2 for calling the MOTVideoStream obj's underlying member method code with example usage: obj.set_kwargs() without return types