C:\Users\msmith\Desktop\ffmpeg-20140320-git-19139d8-win64-static\bin>ffmpeg.exe -loglevel debug -format s16le -sample_fmt s16 -ar 44100 -ac 2 -i raw.pcm file.wav
ffmpeg version N-61663-g19139d8 Copyright (c) 2000-2014 the FFmpeg developers
  built on Mar 20 2014 22:06:17 with gcc 4.8.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp
ack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable
-zlib
  libavutil      52. 67.100 / 52. 67.100
  libavcodec     55. 52.102 / 55. 52.102
  libavformat    55. 34.101 / 55. 34.101
  libavdevice    55. 11.100 / 55. 11.100
  libavfilter     4.  3.100 /  4.  3.100
  libswscale      2.  5.102 /  2.  5.102
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level)with argument 'debug'.
Reading option '-format' ... matched as AVOption 'format' with argument 's16le'.
Reading option '-sample_fmt' ... matched as option 'sample_fmt' (set sample format) with argument 's16'.
Reading option '-ar' ... matched as option 'ar' (set audio sampling rate (in Hz)) with argument '44100'.
Reading option '-ac' ... matched as option 'ac' (set number of audio channels) with argument '2'.
Reading option '-i' ... matched as input file with argument 'raw.pcm'.
Reading option 'file.wav' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input file raw.pcm.
Applying option sample_fmt (set sample format) with argument s16.
Applying option ar (set audio sampling rate (in Hz)) with argument 44100.
Applying option ac (set number of audio channels) with argument 2.
Successfully parsed a group of options.
Opening an input file: raw.pcm.
[mp3 @ 000000000032f680] Format mp3 detected only with low score of 1, misdetection possible!
Option sample_rate not found.

C:\Users\msmith\Desktop\ffmpeg-20140320-git-19139d8-win64-static\bin>