Burn subtitle into video

hard-subtitle.py

#!/usr/bin/env python
import os
import sys
import shlex
import subprocess
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("orig_dir")
parser.add_argument("baked_dir")
args = parser.parse_args()

orig_dir = args.orig_dir
baked_dir = args.baked_dir

mp4_files = [f for f in os.listdir(orig_dir) if f.endswith('.mp4')]
for f in mp4_files:
    try:
        srt_file = f[:-4] + ".en.srt"
        baked_file = baked_dir + '/' + f
        # cmder bash on windows: replace for ' and ,
        srt_replace = srt_file.replace("'", "\\\\\\\'").replace(",", "\\,")
        subprocess.check_call(['d:/ffmpeg/bin/ffmpeg.exe', '-i', f, '-vf', 'subtitles='+srt_replace, baked_file])
    except Exception as e:
        print(e)
        sys.exit(1)