python实现将视频按帧读取到自定义目录

如题，首先读取视频路径，其次根据视频名称创建对应的文件夹，再逐帧将视频帧读入。

import cv2
import argparse
import sys
import os
parser = argparse.ArgumentParser(description='tranfer the vedio to img.')
parser.add_argument('-m', '--mode', choices=['folder', 'url'], default='folder')
parser.add_argument('-p', '--path', help='Specify a path [e.g. testModel]', default='E:DATApose_h3.6mS5Videos')
parser.add_argument('-pimg', '--imgpath', help='Specify a path [e.g. testModel]', default='F:pythonprogrammulti_taskimgS5')
args = parser.parse_args(sys.argv[1:])
 
if args.mode == 'folder':
  #get video
  withPath = lambda f: '{}/{}'.format(args.path,f)
  video = dict((f,cv2.imread(withPath(f))) for f in os.listdir(args.path) if os.path.isfile(withPath(f)))
for key,val in video.items():
  fram_video = '{}/{}'.format(args.path,key)
  act_cam=key[:-4]
  vc=cv2.VideoCapture('{}{}'.format(args.path,key))
  c = 1
  # camera
  # print('{}{}{}.jpg'.format(args.imgpath, act_cam,str(c)))
  path = '{}{}'.format(args.imgpath, act_cam)
  isExists = os.path.exists(path)
  if not isExists:
    os.makedirs(path)
  if vc.isOpened():
    rval, frame = vc.read()
  else:
    rval = False
  while rval:
    rval, frame = vc.read()
    cv2.imwrite('{}\{}\{}.jpg'.format(args.imgpath, act_cam,str(c)),frame)
  #   cv2.imwrite('C:\Users\65183\Desktop\test\fuck\'+str(c)+'.jpg', frame)
    c = c + 1
    cv2.waitKey(1)
  vc.release()

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