下面代码可以实现MP4格式视频与图片的相互转换，亲测可用！
import cv2
from cv2 import VideoWriter, VideoWriter_fourcc, imread, resize
import os
from PIL import Imagedef Pic2Video():imgPath = "youimgPath" # 读取图片路径videoPath = "youvideoPath" # 保存视频路径images = os.listdir(imgPath)fps = 25 # 每秒25帧数# VideoWriter_fourcc为视频编解码器 ('I', '4', '2', '0') —>(.avi) 、('P', 'I', 'M', 'I')—>(.avi)、('X', 'V', 'I', 'D')—>(.avi)、('T', 'H', 'E', 'O')—>.ogv、('F', 'L', 'V', '1')—>.flv、('m', 'p', '4', 'v')—>.mp4fourcc = VideoWriter_fourcc(*"MJPG")image = Image.open(imgPath + images[0])videoWriter = cv2.VideoWriter(videoPath, fourcc, fps, image.size)for im_name in range(len(images)):frame = cv2.imread(imgPath + images[im_name]) # 这里的路径只能是英文路径# frame = cv2.imdecode(np.fromfile((imgPath + images[im_name]), dtype=np.uint8), 1) # 此句话的路径可以为中文路径print(im_name)videoWriter.write(frame)print("图片转视频结束！")videoWriter.release()cv2.destroyAllWindows()def Video2Pic():videoPath = "./res.mp4" # 读取视频路径imgPath = "jpg/" # 保存图片路径cap = cv2.VideoCapture(videoPath)fps = cap.get(cv2.CAP_PROP_FPS) # 获取帧率width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH)) # 获取宽度height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT)) # 获取高度suc = cap.isOpened() # 是否成功打开frame_count = 0while suc:frame_count += 1suc, frame = cap.read()#cv2.imwrite(imgPath + str(frame_count).zfill(4), frame)cv2.imwrite(imgPath + "%d.jpg" %frame_count, frame)cv2.waitKey(1)cap.release()print("视频转图片结束！")if __name__ == '__main__':Video2Pic()#Pic2Video()