Python script that converts streaming links m3u8 to any types of video downloaded

m3u8converter.py

#!/usr/bin/python
import subprocess
import argparse
import os

if os.system('which ffmpeg') != 0:
    print('Please install ffmpeg before using this script')
    print('sudo apt install ffmpeg')
    exit(1)

ap = argparse.ArgumentParser()
ap.add_argument('source', help="Path to .txt with streaming .m3u8 links separated with \\n")
ap.add_argument('-o', '--output', help="Path to .txt file with output filename paths seperated with \\n")
args = vars(ap.parse_args())

with open(args['source'], 'r') as videos_file:
    vurls = videos_file.readlines()

if args['output']:
    with open(args['output'], 'r') as outputs_file:
        vnames = outputs_file.readlines()
else:
    vnames = [f'video{i}.mp4\n' for i in range(len(vurls))]

for vurl, vname in zip(vurls, vnames):
    subprocess.call(f"ffmpeg -i '{vurl[:-1]}' '{vname[:-1]}' &", shell=True)