ffmpeg version 3.2.14-1~deb9u1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
  configuration: --prefix=/usr --extra-version='1~deb9u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 34.101 / 55. 34.101
  libavcodec     57. 64.101 / 57. 64.101
  libavformat    57. 56.101 / 57. 56.101
  libavdevice    57.  1.100 / 57.  1.100
  libavfilter     6. 65.100 /  6. 65.100
  libavresample   3.  1.  0 /  3.  1.  0
  libswscale      4.  2.100 /  4.  2.100
  libswresample   2.  3.100 /  2.  3.100
  libpostproc    54.  1.100 / 54.  1.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from 'sample.wav':
  Metadata:
    album           : yŒšärßÁ»zšZ³ñA³ŠÄH`¿åÁÒè«YEZúŠÁ¿I`
    artist          : Éè»
    genre           : ¬lü¯¹ºìi
    title           : šÜ¯01_VNkLÍH
    date            : 2020
  Duration: 00:17:58.55, bitrate: 2304 kb/s
    Stream #0:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s32 (24 bit), 2304 kb/s
Output #0, flac, to 'sample.flac':
  Metadata:
    album           : yŒšärßÁ»zšZ³ñA³ŠÄH`¿åÁÒè«YEZúŠÁ¿I`
    artist          : Éè»
    genre           : ¬lü¯¹ºìi
    title           : šÜ¯01_VNkLÍH
    date            : 2020
    encoder         : Lavf57.56.101
    Stream #0:0: Audio: flac, 48000 Hz, stereo, s32 (24 bit), 128 kb/s
    Metadata:
      encoder         : Lavc57.64.101 flac
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s24le (native) -> flac (native))
Press [q] to stop, [?] for help
size=   22557kB time=00:02:37.44 bitrate=1173.7kbits/s speed= 315x    
size=   46315kB time=00:05:16.60 bitrate=1198.4kbits/s speed= 317x    
size=   70158kB time=00:07:52.12 bitrate=1217.3kbits/s speed= 315x    
size=   93865kB time=00:10:28.41 bitrate=1223.6kbits/s speed= 314x    
size=  118251kB time=00:13:03.93 bitrate=1235.7kbits/s speed= 314x    
size=  143320kB time=00:15:42.43 bitrate=1245.8kbits/s speed= 314x    
size=  164255kB time=00:17:58.54 bitrate=1247.6kbits/s speed= 314x    
video:0kB audio:164247kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.005028%