C:\Users\msmith\Desktop\ffmpeg-20140320-git-19139d8-win64-static\bin>ffmpeg.exe
-i raw.pcm -loglevel debug -format s16le -sample_fmt s16 -ar 44100 -ac 2 file.wa
v
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 '-i' ... matched as input file with argument 'raw.pcm'.
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 '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.
Successfully parsed a group of options.
Opening an input file: raw.pcm.
[mp3 @ 000000000293f500] Format mp3 detected only with low score of 1, misdetection possible!
[mp3 @ 000000000293f500] Before avformat_find_stream_info() pos: 0 bytes read:1081472 seeks:2
[mp3 @ 0000000002927980] Header missing
    Last message repeated 207 times
[mp3 @ 000000000293f500] decoding for stream 0 failed
[mp3 @ 000000000293f500] Could not find codec parameters for stream 0 (Audio: mp3, 0 channels, s16p): unspecified frame size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mp3 @ 000000000293f500] After avformat_find_stream_info() pos: 3462900 bytes re
ad:4511604 seeks:2 frames:208
raw.pcm: could not find codec parameters
[AVIOContext @ 0000000000357180] Statistics: 4511604 bytes read, 2 seeks

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