overredact_videos.py

import os
videos = [name for name in os.listdir("D:\\") if name.endswith(".mpg") or name.endswith(".mp4")]
for video in videos:
    print video
    command = 'C:\\Users\\tim\\Downloads\\ffmpeg-20150220-git-6c91afe-win64-static\\bin\\ffmpeg.exe -i D:\\%s -crf 18 -preset ultrafast -vf format=gray,format=yuv422p,"boxblur=6:4:cr=2:ar=2"   -an D:\\overredacted\\%s' % (video,video)
    print command
    os.system(command)