FFMPEG conversion MP4 -> OGV

[g-------@localhost 0609]$ ~/Téléchargements/ffmpeg-2.7-64bit-static/ffmpeg -i Video20150609_185820.mp4 Video20150609_185820.ogv -qscale 0
ffmpeg version 2.7-   http://johnvansickle.com/ffmpeg/    Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (Debian 4.9.2-20)
  configuration: --enable-gpl --enable-version3 --disable-shared --disable-debug --enable-runtime-cpudetect --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libopus --enable-libass --enable-gnutls --enable-libvidstab --enable-libsoxr --cc=gcc-4.9
  libavutil      54. 27.100 / 54. 27.100
  libavcodec     56. 41.100 / 56. 41.100
  libavformat    56. 36.100 / 56. 36.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 16.101 /  5. 16.101
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.100 /  1.  2.100
  libpostproc    53.  3.100 / 53.  3.100
Trailing options were found on the commandline.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Video20150609_185820.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 0
    compatible_brands: isom3gp4
    creation_time   : 2015-06-09 16:59:38
  Duration: 00:01:13.15, start: 0.000000, bitrate: 17159 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 17032 kb/s, 30.05 fps, 30 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2015-06-09 16:59:38
      handler_name    : VideoHandle
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2015-06-09 16:59:38
      handler_name    : SoundHandle
Output #0, ogg, to 'Video20150609_185820.ogv':
  Metadata:
    major_brand     : isom
    minor_version   : 0
    compatible_brands: isom3gp4
    encoder         : Lavf56.36.100
    Stream #0:0(eng): Video: theora (libtheora), yuv420p, 1920x1080, q=2-31, 200 kb/s, 30 fps, 30 tbn, 30 tbc (default)
    Metadata:
      creation_time   : 2015-06-09 16:59:38
      handler_name    : VideoHandle
      encoder         : Lavc56.41.100 libtheora
      major_brand     : isom
      minor_version   : 0
      compatible_brands: isom3gp4
    Stream #0:1(eng): Audio: vorbis (libvorbis), 48000 Hz, stereo, fltp (default)
    Metadata:
      creation_time   : 2015-06-09 16:59:38
      handler_name    : SoundHandle
      encoder         : Lavc56.41.100 libvorbis
      major_brand     : isom
      minor_version   : 0
      compatible_brands: isom3gp4
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> theora (libtheora))
  Stream #0:1 -> #0:1 (aac (native) -> vorbis (libvorbis))
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