音楽CDをwavやmp3ファイルにする（主にMixCD向け）

! cd2wav.py

# main.py

import sys
import os
import os.path
import subprocess
import datetime

musicdir = 'C:\\music\\VLC'
vlc = 'C:\\Program Files (x86)\\VideoLAN\\VLC\\vlc.exe'
ffmpeg = 'C:\\bin\\ffmpeg.exe'
wav_cmd = '"%s" -I http cdda:///%%s --cdda-track=%%s :sout=#transcode{acodec=s16l,channels=2,samplerate=44100}:std{access=file,mux=wav,dst=%%s} vlc://quit' % vlc
mp3_cmd = '"%s" %%s -filter_complex "concat=n=%%s:v=0:a=1" -codec:a libmp3lame -qscale:a 2 "%%s"' % ffmpeg

def print_percent(n,m):
  pct = int(100.0 * float(n) / float(m))
  bar = int(float(pct) / 5.0)
  print '[' + '=' * bar + ' ' * (20-bar) + '] ' + str(pct) + '%\r',

def execCmd(cmd):
    p = subprocess.Popen(cmd,stdout=subprocess.PIPE)
    ret = None
    while p.poll() is None:
        line = p.stdout.readline().strip()
        if line: print line
    retcode = p.wait()
    return ret

def main():
  if len(sys.argv) not in (2,3): return
  drive = sys.argv[1]
  toMp3 = (len(sys.argv)==3)
  if not ':' in drive: drive += ':'
  if not '\\' in drive: drive += '\\'
  if not os.path.isdir(drive): return
  print 'drive:', drive
  track_cnt = len(filter(lambda n:'.cda' in n, os.listdir(drive)))
  d = musicdir + '\\' + datetime.datetime.now().strftime('%Y%m%d-%H%M%S')
  if not os.path.isdir(d):
    os.makedirs(d)
  print 'output dir:', d
  print 'converting from cd to wav...'
  in_wavs = []
  for i in xrange(track_cnt):
    n = i + 1
    print_percent(i,track_cnt)
    f = '%s\\%04d.wav' % (d,n)
    c = wav_cmd % (drive,n,f)
    p = subprocess.Popen(c)
    p.wait()
    print_percent(n,track_cnt)
    in_wavs.append(f)

  if toMp3:
    print 'converting from all wavs to mp3...'
    f = '%s\\all.mp3' % d
    c = mp3_cmd % (' '.join(map(lambda n:'-i '+n, in_wavs)),track_cnt,f)
    execCmd(c)

if __name__=='__main__': main()

cd2mp3.bat

set /p DRVLTR="input drive letter: "
C:\Python27\python.exe main.py %DRVLTR% mp3
pause

cd2wav.bat

set /p DRVLTR="input drive letter: "
C:\Python27\python.exe main.py %DRVLTR%
pause