Take screenshot (poster) for video at specific seconds

ffposter.py

#!/usr/bin/env python2

import sys
import os.path
import datetime
from subprocess import call

width = 1280
sec = str(datetime.timedelta(seconds=int(sys.argv[1])))

for f in sys.argv[2:]:
	call(['ffmpeg','-hide_banner','-y','-i',f,
	'-c:v','mjpeg','-q:v','8', '-frames:v','1',
	'-filter:v','scale=\'min('+str(width)+',iw)/2\':-2',
	'-an','-sn','-ss',sec,'-f','rawvideo',os.path.splitext(f)[0]+'.jpg'])