ffmpeg -i input.mp3 -af volumedetect -f null NUL
ffmpeg version N-86360-gfab1863 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 4.9.4 (GCC)
  configuration: --arch=x86 --target-os=mingw32 --cross-prefix=/root/ffmpeg/bin --pkg-config=pkg-config --enable-small --disable-everything --disable-asm --disable-dct --disable-dwt --disable-error-resilience --disable-lsp --disable-lzo --disable-mdct --disable-rdft --disable-fft --disable-faan --disable-pixelutils --disable-swscale --disable-postproc --disable-avdevice --disable-network --disable-doc --disable-debug --disable-bzlib --disable-iconv --disable-lzma --disable-xlib --disable-zlib --disable-sdl2 --disable-schannel --disable-pthreads --disable-symver --disable-cuda --disable-nvenc --disable-d3d11va --disable-cuvid --disable-dxva2 --disable-w32threads --disable-bsfs --disable-hwaccels --enable-libfdk-aac --enable-libopus --enable-libvorbis --enable-libmp3lame --enable-protocol=file --enable-filter='volume,volumedetect,aresample' --enable-bsf=aac_adtstoasc --enable-parser='aac,opus,vorbis,mpegaudio,flac,mpeg4video' --enable-muxer='null,wav,mp3,ogg,matroska,adts,ipod,flac' --enable-demuxer='flac,wav,matroska,mov,mp3,ogg,webm_dash_manifest' --enable-encoder='libfdk_aac,libopus,libvorbis,libmp3lame,flac,pcm_s16le' --enable-decoder='libfdk_aac,libopus,libvorbis,mp3,flac,pcm_s16le' --enable-gpl --enable-version3 --extra-cflags=-Os --enable-shared --disable-static --prefix=/root/ffmpeg/bin --disable-libgme --enable-nonfree --disable-runtime-cpudetect
  libavutil      55. 63.100 / 55. 63.100
  libavcodec     57. 96.101 / 57. 96.101
  libavformat    57. 72.101 / 57. 72.101
  libavfilter     6. 91.100 /  6. 91.100
  libswresample   2.  8.100 /  2.  8.100
[mp3 @ 01af2ac0] Could not find codec parameters for stream 0 (Audio: mp3, 44100 Hz, 2 channels, 128 kb/s): unspecified frame size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, mp3, from 'input.mp3':
  Duration: 00:02:22.55, start: 0.025057, bitrate: 128 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, 128 kb/s
    Metadata:
      encoder         : LAME3.99r
    Side data:
      replaygain: track gain - -7.400000, track peak - unknown, album gain - unknown, album peak - unknown,
Stream mapping:
  Stream #0:0 -> #0:0 (? (?) -> pcm_s16le (native))
Decoder (codec mp3) not found for input stream #0:0