MAC终端-mp3格式转caf格式

afconvert [mp3路径] [caf路径] -d ima4 -f caff -v

例如：

afconvert /Users/max/Downloads/弹出\(Popping\)_爱给网_aigei_com.mp3 /Users/max/Desktop/voice/send_circle.caf -d ima4 -f caff -v

结果：

Input file: 弹出(Popping)_爱给网_aigei_com.mp3, 15872 frames
Formats:
  Input file     2 ch,  44100 Hz, '.mp3' (0x00000000) 0 bits/channel, 0 bytes/packet, 1152 frames/packet, 0 bytes/frame
  Input client   2 ch,  44100 Hz, 'lpcm' (0x00000009) 32-bit little-endian float
AudioConverter 0x1731164 (0x7f8851e34710):
  CodecConverter 0x7f8851e34b20
    Input:   2 ch,  44100 Hz, '.mp3' (0x00000000) 0 bits/channel, 0 bytes/packet, 1152 frames/packet, 0 bytes/frame
    Output:  2 ch,  44100 Hz, 'lpcm' (0x00000009) 32-bit little-endian float
    codec: 'adec'/'.mp3'/'appl'
    Input layout tag: 0x650002
    Output layout tag: 0x650002
  Output file    2 ch,      0 Hz, 'ima4' (0x00000000) 0 bits/channel, 0 bytes/packet, 0 frames/packet, 0 bytes/frame
  Output client  2 ch,  44100 Hz, 'lpcm' (0x00000009) 32-bit little-endian float
AudioConverter 0x1731167 (0x7f8851e34f90):
  PCMConverter2 0x7f8851e357e0
    Input:   2 ch,  44100 Hz, 'lpcm' (0x00000009) 32-bit little-endian float
    Output:  2 ch,  44100 Hz, 'lpcm' (0x0000000C) 16-bit little-endian signed integer
  CodecConverter 0x7f8851e35470
    Input:   2 ch,  44100 Hz, 'lpcm' (0x0000000C) 16-bit little-endian signed integer
    Output:  2 ch,  44100 Hz, 'ima4' (0x00000000) 0 bits/channel, 68 bytes/packet, 64 frames/packet, 0 bytes/frame
    codec: 'aenc'/'ima4'/'appl'
    Input layout tag: 0x650002
    Output layout tag: 0x650002
Optimizing /Users/max/Desktop/voice/send_circle.caf... done