$ ffprobe Vidéos/Starter\ Squad/test.webm
ffprobe version 3.1.2 Copyright (c) 2007-2016 the FFmpeg developers
  built with gcc 6.1.1 (Debian 6.1.1-11) 20160802
  configuration: --prefix=/usr --extra-cflags='-g -O2 -fdebug-prefix-map=/build/ffmpeg-dmo-3.1.2=. -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libtesseract --libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mipsdsp --disable-mips32r2 --disable-mips32r6 --disable-mips64r6 --disable-msa --disable-mipsfpu --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --enable-libfdk-aac --enable-libx265 --enable-libbs2b --enable-libilbc --enable-libopenh264 --enable-libkvazaar --enable-libsnappy --enable-libsoxr --disable-podpages --enable-libebur128 --enable-libiec61883 --enable-vaapi --enable-opencl --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/x86_64-linux-gnu
  libavutil      55. 28.100 / 55. 28.100
  libavcodec     57. 48.101 / 57. 48.101
  libavformat    57. 41.100 / 57. 41.100
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 47.100 /  6. 47.100
  libavresample   3.  0.  0 /  3.  0.  0
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  1.100 /  2.  1.100
  libpostproc    54.  0.100 / 54.  0.100
Input #0, matroska,webm, from 'Vidéos/Starter Squad/test.webm':
  Metadata:
    encoder         : Lavf57.41.100
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: vp9 (Profile 0), yuv420p(tv), 1280x720, SAR 1:1 DAR 16:9, 24 fps, 24 tbr, 1k tbn, 1k tbc (default)
    Stream #0:1(eng): Audio: vorbis, 48000 Hz, stereo, fltp (default)
    Stream #0:2(eng): Subtitle: webvtt