pip install pillow

pip install opencv-python

# coding: utf-8
from PIL import ImageGrab
import numpy as np
import cv2
 
fps = 20
start = 3 # 延时录制
end = 15 # 自动结束时间
 
curScreen = ImageGrab.grab() # 获取屏幕对象
height, width = curScreen.size
 
video = cv2.VideoWriter('video02.avi', cv2.VideoWriter_fourcc(*'XVID'), fps, (height, width))
 
imageNum = 0
while True:
 imageNum += 1
 captureImage = ImageGrab.grab() # 抓取屏幕
 frame = cv2.cvtColor(np.array(captureImage), cv2.COLOR_RGB2BGR)
 
 # 显示无图像的窗口
 cv2.imshow('capturing', np.zeros((1, 255), np.uint8))
 
 # 控制窗口显示位置，方便通过按键方式退出
 cv2.moveWindow('capturing', height - 100, width - 100) 
 if imageNum > fps * start:
  video.write(frame)
 # 退出条件 
 if cv2.waitKey(50) == ord('q') or imageNum > fps * end:
  break
video.release()
cv2.destroyAllWindows()