toac3.py

#!/bin/env python
import os
import subprocess
import shutil

exe = shutil.which('ffmpeg')

def usage():
    print("Call ffmpeg to convert audio to AC3 for playback on ruku devices")
    print("Video is left untouched")
    print(f"{__name__} [-r dir]")
    print(f"{__name__} video.avi movie.mkv")


def ffmpeg(files):
    for file in files:
        ouf = '_' + file
        cmd = [exe, "-i", file, "-vcodec", "copy", "-acodec", "ac3", ouf]
        subprocess.run(cmd)
        os.rename(ouf, file)


if __name__ == '__main__':
    import sys
    files = []
    args = sys.argv[1:]
    if args[0].lower() == '-r':
        try:
            files = os.listdir(args[1])
        except:
            print("[ERROR] [-r] argument must be directory")
            usage()
            exit(1)
    else: files = args
    files = [fil for fil in files if os.path.isfile(fil)]
    if not files:
        usage()
        exit(1)

    ffmpeg(files)