ffmpeg version N-81308-g369ed11 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 6.1.0 (Rev1, Built by MSYS2 project)
  configuration:  --enable-avisynth --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --disable-w32threads --enable-decklink --enable-fontconfig --enable-frei0r --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libilbc --enable-libmfx --enable-libmodplug --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libwavpack --enable-libwebp --enable-libxavs --enable-libxvid --enable-libzimg --enable-openssl --enable-libsnappy --enable-gpl --enable-nvenc --enable-opencl --enable-opengl --enable-libcdio --enable-libfaac --enable-libfdk-aac --enable-libkvazaar --enable-librubberband --enable-libssh --enable-libtesseract --enable-libzvbi --enable-chromaprint --enable-libebur128 --enable-libopenh264 --enable-libopenmpt --enable-version3 --enable-nonfree --enable-filter=frei0r --disable-debug
  libavutil      55. 28.100 / 55. 28.100
  libavcodec     57. 51.100 / 57. 51.100
  libavformat    57. 46.100 / 57. 46.100
  libavdevice    57.  0.102 / 57.  0.102
  libavfilter     6. 50.100 /  6. 50.100
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  1.100 /  2.  1.100
  libpostproc    54.  0.100 / 54.  0.100
[eac3 @ 0000000002a33540] Estimating duration from bitrate, this may be inaccurate
Input #0, eac3, from 'snip.eac3':
  Duration: 00:00:06.40, start: 0.000000, bitrate: 640 kb/s
    Stream #0:0: Audio: eac3, 48000 Hz, 5.1(side), fltp, 640 kb/s
[mp4 @ 0000000002a61060] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
Output #0, mp4, to 'snip.mp4':
  Metadata:
    encoder         : Lavf57.46.100
    Stream #0:0: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 5.1(side), fltp, 341 kb/s
    Metadata:
      encoder         : Lavc57.51.100 aac
Stream mapping:
  Stream #0:0 -> #0:0 (eac3 (native) -> aac (native))
Press [q] to stop, [?] for help
[eac3 @ 0000000002a8f900] Dependent substream decoding is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[eac3 @ 0000000002a8f900] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
size=     168kB time=00:00:03.88 bitrate= 354.7kbits/s speed=7.75x    
size=     309kB time=00:00:06.36 bitrate= 398.1kbits/s speed=8.36x    
video:0kB audio:307kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.682747%
[aac @ 000000000060b560] Qavg: 472.000