ffmpeg version N-69351-gfb34c58 Copyright (c) 2000-2015 the FFmpeg developers
  built on Jan 28 2015 02:36:35 with gcc 4.9.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
  libavutil      54. 18.100 / 54. 18.100
  libavcodec     56. 21.100 / 56. 21.100
  libavformat    56. 19.100 / 56. 19.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5.  9.101 /  5.  9.101
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Guessed Channel Layout for  Input Stream #0.0 : stereo
Input #0, wav, from 'Unknown Artist - Unknown Title.wav':
  Duration: 00:44:42.41, bitrate: 1411 kb/s
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s
Output #0, flac, to 'Unknown Artist - Unknown Title.flac':
  Metadata:
    encoder         : Lavf56.19.100
    Stream #0:0: Audio: flac, 44100 Hz, stereo, s16, 128 kb/s
    Metadata:
      encoder         : Lavc56.21.100 flac
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s16le (native) -> flac (native))
Press [q] to stop, [?] for help
size=   12997kB time=00:01:50.96 bitrate= 959.5kbits/s    
size=   28314kB time=00:03:49.98 bitrate=1008.6kbits/s    
size=   42513kB time=00:05:48.16 bitrate=1000.3kbits/s    
size=   55684kB time=00:07:39.23 bitrate= 993.3kbits/s    
size=   70694kB time=00:09:39.29 bitrate= 999.7kbits/s    
size=   86335kB time=00:11:46.66 bitrate=1000.8kbits/s    
size=  101830kB time=00:13:42.64 bitrate=1014.0kbits/s    
size=  117155kB time=00:15:45.84 bitrate=1014.7kbits/s    
size=  132494kB time=00:17:44.22 bitrate=1019.9kbits/s    
size=  147057kB time=00:19:47.73 bitrate=1014.3kbits/s    
size=  162454kB time=00:21:51.76 bitrate=1014.5kbits/s    
size=  176157kB time=00:23:42.41 bitrate=1014.5kbits/s    
size=  189440kB time=00:25:49.58 bitrate=1001.5kbits/s    
size=  205532kB time=00:27:54.86 bitrate=1005.3kbits/s    
size=  219684kB time=00:29:42.38 bitrate=1009.7kbits/s    
size=  233655kB time=00:31:51.53 bitrate=1001.3kbits/s    
size=  249363kB time=00:33:57.34 bitrate=1002.7kbits/s    
size=  263312kB time=00:35:49.66 bitrate=1003.4kbits/s    
size=  277569kB time=00:37:56.83 bitrate= 998.7kbits/s    
size=  292774kB time=00:39:51.24 bitrate=1003.0kbits/s    
size=  308627kB time=00:41:51.20 bitrate=1006.8kbits/s    
size=  319084kB time=00:44:04.00 bitrate= 988.6kbits/s    
size=  321555kB time=00:44:42.41 bitrate= 982.0kbits/s    
video:0kB audio:321547kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.002517%