from subprocess import call, check_output, STDOUT
from re import match
from sys import argv

argv.append('https://coub.com/view/aeeuu')

AUDIO_FILE = 'audio'
VIDEO_FILE = 'video'
URL = argv[1] if len(argv) > 0 else ''

call(('/usr/bin/env', 'youtube-dl', '--extract-audio',
                                    '--output',         '{}.%(ext)s'.format(AUDIO_FILE),
                                    URL))
call(('/usr/bin/env', 'youtube-dl', '--output',         '{}.%(ext)s'.format(VIDEO_FILE),
                                    URL))