pip install ffmpy3

# -*- coding: utf-8 -*-
import os
from PIL import Image
from ffmpy3 import FFmpeg
 
in_jpgDatasetPath = 'I:/VOC/trainval'
out_yuvDatasetPath = 'I:/VVC/loop/yuvdataset'
 
piclist = os.listdir(in_jpgDatasetPath)
for pic in piclist:
 picname = pic.split('.')[0]
 picpath = os.path.join(in_jpgDatasetPath,pic)
 img = Image.open(picpath)
 in_wid,in_hei = img.size
 out_wid = in_wid//16*16
 out_hei = in_hei//16*16
 size = '{}x{}'.format(out_wid,out_hei) #输出文件会缩放成这个大小
 outname = out_yuvDatasetPath + '/' + picname + '_'+size+ '.yuv'
 
 ff = FFmpeg(inputs={picpath:None},
    outputs={outname:'-s {} -pix_fmt yuv420p'.format(size)})
 print(ff.cmd)
 ff.run()