radiko.jpãrtmpdumpã§é²é³ããæã (å¤å)é³è³ªãè¯ãã¦å°ãããã¡ã¤ã«ã¸ã®å¤ææ¹æ³ ffmpegã¨Macæ¨æºã®afconvertã使ç¨ããã $ ffmpeg -vn -i input.flv temp.wav $ afconvert temp.wav -f m4af output.m4a $ rm temp.wav ãã£ã¨é©åãªæ¹æ³/ãã©ã¡ã¼ã¿ãããã®ãããããªãã ffmpegã ãããããé³è³ªã®ãããªæ°ãããã ä¸éãã¡ã¤ã«(wav)ã大ãããªãã®ãåé¡ã ãµã¤ãºã®ä¾ sample.flv 6.9M temp.wav 213M afconv.m4a 18M (afconvert) ffmpeg.m4a 36M (ffmpeg -aq 0ã§å¤æ,encoder: Lavf52.56.0)


{{#tags}}- {{label}}
{{/tags}}