單個的視頻轉換圖片參看：

python opencv 把視頻轉為圖片

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對于多個視頻，采用多線程處理方法

video_path為待轉換視頻的路徑，pic_path為輸出圖像的路徑，輸出的圖像統一保存在pic_path下面與相應視頻名相同的文件夾下面。

代碼如下：

# coding=utf-8 import cv2 import os import threading from threading import Lock, Threadvideo_path = "./video/" pic_path = "./pic/" filelist = os.listdir(video_path) def video2pic(filename):# print(filename)cnt = 0dnt = 0if os.path.exists(pic_path + str(filename)):passelse:os.mkdir(pic_path + str(filename))cap = cv2.VideoCapture(video_path + str(filename)) # 讀入視頻while True:# get a frameret, image = cap.read()if image is None:break# show a framew = image.shape[1]h = image.shape[0]if (cnt % 20) == 0:cv2.imencode('.jpg', image)[1].tofile(pic_path + str(filename) + '/' + str(dnt) + '.jpg')print(pic_path + str(filename) + '/' + str(dnt) + '.jpg')dnt = dnt + 1cnt = cnt + 1if cv2.waitKey(1) & 0xFF == ord('q'):breakcap.release()if __name__ == '__main__':for filename in filelist:threading.Thread(target=video2pic, args=(filename, )).start()

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