Node.js的ffmetadata编解码器参数不正确

Question

我在Node.js做一个歌曲下载应用程序。我设法让一切工作，应用程序下载歌曲和下载它的艺术(图像)。我有mp3文件和jpg文件。唯一的问题是把jpg文件附加到mp3文件上。

我正在使用ffmetadata node.js模块。我下载并安装了它的依赖项"ffmpeg"cli。

现在，当我尝试将元数据写入mp3文件并附加艺术作品时，它会发出这个错误:

Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument

我代码:

ffmetadata.write('test.mp3', {}, {attachments: ['test.jpg']}, function(err) {
  if (err) console.error(err);
});

错误:

[Error: ffmpeg version N-73872-g6b96c70 Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
  libavutil      54. 28.100 / 54. 28.100
  libavcodec     56. 50.101 / 56. 50.101
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 25.100 /  5. 25.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'songs/Irresistible - Fall Out Boy (Lyrics).mp3':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6mp41
    creation_time   : 2015-04-03 10:45:25
  Duration: 00:03:26.94, start: 0.000000, bitrate: 128 kb/s
    Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
    Metadata:
      creation_time   : 2015-04-03 10:45:25
      handler_name    : SoundHandler
Input #1, image2, from 'songs/albumart/Irresistible - Fall Out Boy (Lyrics).jpg':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 24578 kb/s
    Stream #1:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 640x640 [SAR 300:300 DAR 1:1], 25 tbr, 25 tbn, 25 tbc
[mp3 @ 0000000004865d80] Invalid audio stream. Exactly one MP3 audio stream is required.
Output #0, mp3, to 'songsIrresistible - Fall Out Boy (Lyrics).ffmetadata.mp3':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6mp41
    dryRun          : true
    encoder         : Lavf56.40.101
    Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, 125 kb/s (default)
    Metadata:
      creation_time   : 2015-04-03 10:45:25
      handler_name    : SoundHandler
    Stream #0:1: Video: mjpeg, yuvj444p, 640x640 [SAR 300:300 DAR 1:1], q=2-31, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #1:0 -> #0:1 (copy)
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
]

Answer 1

读取输出:

Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)

[mp3 @ 0000000004865d80] Invalid audio stream. Exactly one MP3 audio stream is required

Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #1:0 -> #0:1 (copy)

您的输入文件不是MP3，而是MP4A/AAC。分机号错了。然后尝试将AAC流复制为MP3，这显然失败了。在下载程序中检查源文件。