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@sumsum88

フォルダ内のwavファイルを一括でmp3に変更

Posted at

やりたかったことは

  • コマンドライン上でwavをmp3に変換
  • フォルダ内の全ファイルに一括でコマンド適用（シェルのお勉強）

wav to mp3

ffmpegをインストール

$brew install ffmpeg

変換

ffmpeg -i "hoge.wav" -vn -ac 2 -ar 44100 -ab 256k -acodec libmp3lame -f mp3 "hoge.mp3"

-abでビットレートを指定します。

一括処理

for i in $(ls)
do
ffmpeg -i $i -vn -ac 2 -ar 44100 -ab 256k -acodec libmp3lame -f mp3 ${i%.*}.mp3
done
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