convert pcm to mp3 exception

[nn200433]

convert pcm to mp3:

ffmpeg -f s16be -ac 2 -ar 16000 -acodec pcm_s16le -i 16k.pcm new_mp3.mp3

console log:

10:00:20.713 [main] DEBUG ws.schild.jave.process.ProcessWrapper - About to execute C:\Users\abc\AppData\Local\Temp\jave\ffmpeg-amd64-3.3.1.exe -f s16be -acodec pcm_s16le -i E:\下载\audio\8k16bit.pcm -vn -ac 2 -ar 16000 -f mp3 -y C:\Users\abc\AppData\Local\Temp\audio\657127348b283a58b81f0a60.mp3 -hide_banner
10:00:20.847 [main] DEBUG ws.schild.jave.process.ProcessWrapper - About to execute C:\Users\abc\AppData\Local\Temp\jave\ffmpeg-amd64-3.3.1.exe -i E:\下载\audio\8k16bit.pcm -hide_banner
10:00:23.621 [main] DEBUG ws.schild.jave.MultimediaObject - Output line: E:\下载\audio\8k16bit.pcm: Invalid data found when processing input
10:00:23.632 [main] ERROR cn.abc.ffmpeg.audio.service.impl.MP3ConvertServiceImpl - ---> pcm 转 mp3 异常

probable cause:

No input parameters

C:\Users\abc>ffmpeg -i E:\下载\audio\8k16bit.pcm
ffmpeg version 4.2.3 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200523
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
E:\下载\audio\8k16bit.pcm: Invalid data found when processing input

With input parameters

C:\Users\abc>ffmpeg -f s16be -acodec pcm_s16le -i E:\下载\audio\8k16bit.pcm
ffmpeg version 4.2.3 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200523
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
[s16be @ 0000017d05708d00] Estimating duration from bitrate, this may be inaccurate
Guessed Channel Layout for Input Stream #0.0 : mono
Input #0, s16be, from 'E:\下载\audio\8k16bit.pcm':
  Duration: 00:00:01.27, bitrate: 705 kb/s
    Stream #0:0: Audio: pcm_s16le, 44100 Hz, mono, s16, 705 kb/s
At least one output file must be specified

---

pcm file download link : pcm test audio file

I think there needs to be an input parameter in the method(ws.schild.jave.MultimediaObject#getInfo).

  /**
   * Returns a set informations about a multimedia file, if its format is supported for decoding.
   *
   * @return A set of informations about the file and its contents.
   * @throws InputFormatException If the format of the source file cannot be recognized and decoded.
   * @throws EncoderException If a problem occurs calling the underlying ffmpeg executable.
   */
  public MultimediaInfo getInfo() throws InputFormatException, EncoderException {
    if (isURL() || inputFile.canRead()) {
      ProcessWrapper ffmpeg = locator.createExecutor();
      
      // prescription: Add input file other parameters
      
      ffmpeg.addArgument("-i");
      ffmpeg.addArgument(toString());
      
      try {
        ffmpeg.execute();
      } catch (IOException e) {
        throw new EncoderException(e);
      }
      try {
        RBufferedReader reader =
            new RBufferedReader(new InputStreamReader(ffmpeg.getErrorStream()));
        if (isURL()) {
          return parseMultimediaInfo(inputURL.toString(), reader);
        } else {
          return parseMultimediaInfo(inputFile.getAbsolutePath(), reader);
        }
      } finally {
        ffmpeg.destroy();
      }
    } else {
      throw new EncoderException("Input file not found <" + inputFile.getAbsolutePath() + ">");
    }
  }