mp3 split based on input file

split-mp3.py

import subprocess
import sys


def main():
    """split a music track into specified sub-tracks by calling ffmpeg from the shell"""

    # check command line for original file and track list file
    if len(sys.argv) != 3:
        print 'usage: split <original_track> <track_list>'
        exit(1) 

    # record command line args
    original_track = sys.argv[1]
    track_list = sys.argv[2]

    # create a template of the ffmpeg call in advance
    cmd_string = 'ffmpeg -i {tr} -acodec copy -ss {st} -to {en} "{nm}.mp3"'

    # read each line of the track list and split into start, end, name
    with open(track_list, 'r') as f:
        for line in f:
            # skip comment and empty lines
            if line.startswith('#') or len(line) <= 1:
                continue

            # create command string for a given track
            start = line.strip()[0:8]
            end = line.strip()[9:17]
            name = line.strip()[18:999]

            command = cmd_string.format(tr=original_track, st=start, en=end, nm=name)

            print command

            # use subprocess to execute the command in the shell
            subprocess.call(command, shell=True)

    return None


if __name__ == '__main__':
    main()

split file format
00:00:00 00:01:00 01 - The name of the file.mp3
00:01:01 00:05:00 02 - The second file.mp3