Convert an mp4 to a series of jpg files, one per frame

mp4_to_jpgs.py

import cv2, sys, glob, os, multiprocessing

def get_images(mp4_path):
  name = '.'.join( os.path.basename(mp4_path).split('.')[:-1] )
  out_dir = os.path.join('kpop', 'images', name)
  if not os.path.exists(out_dir):
    os.makedirs(out_dir)

  # 10 fps, 200px width
  cmd =  'ffmpeg -i ' + mp4_path + ' '
  cmd += '-r 10 '
  cmd += '-vf scale=200:-1 '
  cmd += out_dir + '/' + name + '-%04d.jpg'
  os.system(cmd)

videos = glob.glob(sys.argv[1])
pool = multiprocessing.Pool(6)

for i in pool.imap(get_images, videos):
  pass