python opencv 图片转视频并添加水印

import os
import cv2
path = 'E:\'
filelist = os.listdir(path)
fourcc = cv2.VideoWriter_fourcc(*'XVID') 

fps = 5  
size = (512, 512)  
video = cv2.VideoWriter('E:\test.avi', fourcc, fps, size)


# for item in filelist:
#     if item.endswith('.png'):
#         item = path + item
#         img = cv2.imread(item)
#         video.write(img)


for i in range(1000):
        item = path +'test' + str(i) + '.png'
        img = cv2.imread(item)
        font = cv2.FONT_HERSHEY_DUPLEX  # 设置字体
        #                  图片对象、 文本、        位置像素、   字体、字体大小、 颜色、  字体粗细
        imgzi = cv2.putText(img, "test"+str(i), (50, 50), font, 1, (0, 0, 0), 2)
        video.write(img)
video.release()
cv2.destroyAllWindows()