Python jpg快速转png并调整大小的方法是什么

pip install pillow

# -*- coding:utf-8 -*-# file name: jpg2png.pyimport osfrom PIL import Imagelist = os.listdir()for i in list:    if i != 'jpg2png.py':        print(i)        Image.open(i).convert('RGBA').resize((512, 512)).save(i[:i.find('.')] + '.png')

import osimport PIL.Image as Imagedef changeJpgToPng(srcPath, dstPath):    # 修改图像大小    image = Image.open(srcPath)    # 将jpg转换为png    png_name = str(dstPath)[0:-len('.jpg')] + '.png'    # image.save(png_name)    # print(png_name)    # image = image.convert('RGBA')    image = image.convert('RGB')    image.save(png_name)    pass if __name__ == '__main__':    listPath = 'D:/BYLW666/deeplabv3-plus-pytorch-main/VOCdevkit/VOC2007/jpg/'#jpg图片    srcPath = 'D:/BYLW666/deeplabv3-plus-pytorch-main/VOCdevkit/VOC2007/src/'#jpg图片    dstPath = 'D:/BYLW666/deeplabv3-plus-pytorch-main/VOCdevkit/VOC2007/png/'#png图片    print("开始转换...")    filename_list = os.listdir(listPath)    for d in filename_list:        if d.count('.jpg') > 0:            changeJpgToPng(srcPath + d, dstPath + d)        pass    print("完成了...")二、视频转图像或图像转视频import cv2import osdef video2image():    cap = cv2.VideoCapture("video/01.mp4")    count = 1    while True:        success, frame = cap.read()        if success == False:            break        cv2.imwrite("images/%d.jpg" % count, frame)        count += 1def image2video():    # 得到图像路径    files = os.listdir("images/")    # 对图像排序    files.sort(key=lambda x: int(x.split(".")[0]))    # 获取图像宽高    h, w, _ = cv2.imread("images/" + files[0]).shape    # 设置帧数    fps = 30    vid = []    '''    设置要保存的格式    mp4:        mp4v     avi:        xvid        i420    '''    # 保存视频路径和名称    # save_path = "video/video.mp4"		# 保存视频路径和名称 MP4格式    save_path = "video/video.avi"  # 保存视频路径和名称 av格式    # 准备写入视频    vid = cv2.VideoWriter(save_path, cv2.VideoWriter_fourcc(*'mp4v'), fps, (w, h))    # vid = cv2.VideoWriter(save_path, cv2.VideoWriter_fourcc(*'xvid'), fps, (w, h))    # vid = cv2.VideoWriter(save_path, cv2.VideoWriter_fourcc(*'i420'), fps, (w, h))    # 写入    for file in files:        img = cv2.imread("images/" + file)        vid.write(img)if __name__ == '__main__':    print("start...")    video2image()    #image2video()    print("OK!")