【Linux】wavをmp3に変換するコマンド＆GUI - "Diary" インターネットさんへの恩返し

嫁が、大量のwavファイルをmp3を変えたいとか言い出したので、かっこつけるためにあえてUbuntuでドヤ顔でバッチ処理変換してやった。

調べた限り方法は4つ(GUIソフト含む)見つかったのでそれぞれご紹介。

lame
avconv
Sound Converter
gogo
ffmpg

lame

lameというモジュール使いました。進捗がわかりやすくでよろしいです。

$ sudo apt-get install lame
$ lame -V2 Track2.wav tra.mp3
LAME 3.99.5 64bits (http://lame.sf.net)
Using polyphase lowpass filter, transition band: 18671 Hz - 19205 Hz
Encoding Track2.wav to tra.mp3
Encoding as 44.1 kHz j-stereo MPEG-1 Layer III VBR(q=2)
    Frame          |  CPU time/estim | REAL time/estim | play/CPU |    ETA 
 61652/61652 (100%)|    1:16/    1:16|    1:16/    1:16|   21.139x|    0:00 
 32 [   46] %
 40 [    0] 
 48 [    1] %
 56 [    0] 
 64 [    1] %
 80 [    0] 
 96 [    0] 
112 [    0] 
128 [    2] %
160 [12258] %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%***
192 [41902] %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%******************
224 [ 4467] %%%%%%%%%%%%%*****
256 [ 2324] %%%%%%%%*
320 [  651] %%%
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
   kbps        LR    MS  %     long switch short %
  191.6       87.9  12.1        94.1   3.3   2.6
Writing LAME Tag...done
ReplayGain: +1.1dB

avconv

avconvっているモジュール。これもコマンドラインからできるタイプ。

$ sudo apt-get install libav-tools libav-tools-links
$ avconv -i Track2.wav avconv.mp3

ffmpeg version 2.7.6-0ubuntu0.15.10.1 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 5.2.1 (Ubuntu 5.2.1-22ubuntu2) 20151010
  configuration: --prefix=/usr --extra-version=0ubuntu0.15.10.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-frei0r --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-openal --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libxvid --enable-libzvbi --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-libssh --enable-libsoxr --enable-libx264 --enable-libopencv --enable-libx265
  libavutil      54. 27.100 / 54. 27.100
  libavcodec     56. 41.100 / 56. 41.100
  libavformat    56. 36.100 / 56. 36.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 16.101 /  5. 16.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.100 /  1.  2.100
  libpostproc    53.  3.100 / 53.  3.100
Guessed Channel Layout for  Input Stream #0.0 : stereo
Input #0, wav, from 'Track2.wav':
  Metadata:
    encoder         : gvfs-cdda using libcdio 0.83 x86_64-pc-linux-gnu
  Duration: 00:26:50.47, bitrate: 1411 kb/s
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s
Output #0, mp3, to 'avconv.mp3':
  Metadata:
    TSSE            : Lavf56.36.100
    Stream #0:0: Audio: mp3 (libmp3lame), 44100 Hz, stereo, s16p
    Metadata:
      encoder         : Lavc56.41.100 libmp3lame
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s16le (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
size=   25164kB time=00:26:50.47 bitrate= 128.0kbits/s    
video:0kB audio:25164kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000982%