C:\windows\system32>ffmpeg -version
ffmpeg version N-76648-g6f520ce Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 5.2.0 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-a
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --ena
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca -
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-
ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --ena
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --e
able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --en
ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwben
 --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enab
e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg -
enable-lzma --enable-decklink --enable-zlib
  libavutil      55.  6.100 / 55.  6.100
  libavcodec     57. 15.100 / 57. 15.100
  libavformat    57. 14.100 / 57. 14.100
  libavdevice    57.  0.100 / 57.  0.100
  libavfilter     6. 15.100 /  6. 15.100
  libswscale      4.  0.100 /  4.  0.100
  libswresample   2.  0.101 /  2.  0.101
  libpostproc    54.  0.100 / 54.  0.100
[NULL @ 00000000005a1c40] Unable to find a suitable output format for 'ΓÇôversi
n'
ΓÇôversion: Invalid argument

C:\windows\system32>