def frames_to_timecode(framerate,frames):
 """
 视频 通过视频帧转换成时间
 :param framerate: 视频帧率
 :param frames: 当前视频帧数
 :return:时间（00:00:01:01）
 """
 return '{0:02d}:{1:02d}:{2:02d}:{3:02d}'.format(int(frames / (3600 * framerate)),
             int(frames / (60 * framerate) % 60),
             int(frames / framerate % 60),
             int(frames % framerate))

print(frames_to_timecode(25,123))

import cv2
videoCapture = cv2.VideoCapture('K:/test/00000.mov')
fps = 30 # 保存视频的帧率
size = (350, 256) # 保存视频的大小
 
videoWriter = cv2.VideoWriter('K:/test/0000_test.avi', cv2.VideoWriter_fourcc('X', 'V', 'I', 'D'), fps, size)
i = 0
 
while True:
 success, frame = videoCapture.read()
 if success:
  i += 1
  print('i = ', i)
  if (i >= 1000 and i <= 2000):
   frame=cv2.resize(frame,(350,256))
   videoWriter.write(frame)
 
  if(i>2000):
   break
 else:
  print('end')
  break