mp3cut

#! /usr/bin/env python

"""cut begin and end from mp3, to get rid of annoying intro from podcast
"""

import os
import sys
from subprocess import check_output as cmd

CUT_START = '01:22'
CUT_END = 23 # seconds

def cut_mp3(mp3_in, mp3_out):
    duration = cmd(['mp3info', '-p', '%m:%s', mp3_in])
    minutes, seconds = (int(x) for x in duration.split(':'))
    cut_start = '00:{}+000-'.format(CUT_START)

    seconds -= CUT_END
    if seconds < 0:
        seconds += 60
        minutes -= 1

    cut_end = '00:{:02d}:{:02d}+000'.format(minutes, seconds)
    cmd(['mp3cut', '-o', mp3_out, '-t', cut_start + cut_end, mp3_in])


if __name__ == '__main__':
    import glob
    for mp3_in in glob.glob('LearningIndonesian-*.mp3'):
        number = mp3_in.rsplit('-', 1)[1].split('.')[0]
        mp3_out = '{:02d}-indonesian.mp3'.format(int(number))
        if not os.path.exists(mp3_out):
            cut_mp3(mp3_in, mp3_out)