ffmpeg version N-63022-gb11ac9b Copyright (c) 2000-2014 the FFmpeg developers
  built on May  7 2014 15:30:40 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  configuration: --enable-gpl --enable-libx265
  libavutil      52. 81.100 / 52. 81.100
  libavcodec     55. 60.103 / 55. 60.103
  libavformat    55. 37.102 / 55. 37.102
  libavdevice    55. 13.101 / 55. 13.101
  libavfilter     4.  5.100 /  4.  5.100
  libswscale      2.  6.100 /  2.  6.100
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100
Input #0, matroska,webm, from '/home-reseau/plepere/Téléchargements/Vallee_Village4K_59.94p.mkv':
  Metadata:
    encoder         : libebml v1.0.0 + libmatroska v1.0.0
    creation_time   : 2014-05-05 13:29:47
  Duration: 00:01:42.85, start: 0.000000, bitrate: 19462 kb/s
    Stream #0:0: Video: h264 (High), yuv420p, 3840x2160 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 1k tbn, 119.88 tbc (default)
    Stream #0:1: Audio: aac, 48000 Hz, stereo, fltp (default)
Invalid encoder type 'libx265'