ffmpeg -i input.mkv -vcodec hevc -x265-params crf=28 -sn -acodec ac3 -map 0:0 -map 0:1 -map 0:2 output.mkv
ffmpeg version 2.2.11 Copyright (c) 2000-2014 the FFmpeg developers
  built on Dec 19 2014 11:38:55 with gcc 4.8.3 (Gentoo 4.8.3 p1.1, pie-0.5.9)
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar --optflags='-O2 -pipe -march=core-avx-i' --extra-cflags='-O2 -pipe -march=core-avx-i' --extra-cxxflags='-O2 -pipe -march=core-avx-i' --disable-static --enable-gpl --enable-postproc --enable-avfilter --enable-avresample --disable-stripping --enable-version3 --disable-indev=v4l2 --disable-outdev=v4l2 --disable-indev=oss --disable-indev=jack --disable-outdev=oss --enable-bzlib --disable-runtime-cpudetect --disable-debug --disable-doc --disable-gnutls --enable-hardcoded-tables --enable-iconv --enable-network --disable-openssl --enable-ffplay --disable-vaapi --enable-vdpau --enable-zlib --enable-libvo-aacenc --disable-libvo-amrwbenc --enable-libmp3lame --disable-libaacplus --disable-libfaac --disable-libtheora --disable-libtwolame --disable-libwavpack --disable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --disable-libcdio --disable-libiec61883 --disable-libdc1394 --disable-libcaca --disable-openal --enable-opengl --disable-libv4l2 --enable-libpulse --enable-x11grab --disable-libflite --disable-frei0r --disable-fontconfig --disable-ladspa --disable-libass --enable-libfreetype --disable-libsoxr --enable-pthreads --disable-libopencore-amrwb --disable-libopencore-amrnb --disable-libfdk-aac --disable-libopenjpeg --disable-libbluray --disable-libcelt --disable-libgme --disable-libgsm --disable-libmodplug --disable-libopus --disable-libquvi --disable-librtmp --disable-libssh --disable-libschroedinger --disable-libspeex --enable-libvorbis --enable-libvpx --disable-libzvbi --disable-armv5te --disable-armv6 --disable-armv6t2 --disable-neon --disable-vfp --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --disable-mipsfpu --disable-altivec --disable-amd3dnow --disable-amd3dnowext --disable-avx --disable-avx2 --disable-fma3 --disable-fma4 --disable-mmxext --disable-sse3 --disable-ssse3 --disable-sse4 --disable-sse42 --cpu=core-avx-i
  libavutil      52. 66.100 / 52. 66.100
  libavcodec     55. 52.102 / 55. 52.102
  libavformat    55. 33.100 / 55. 33.100
  libavdevice    55. 10.100 / 55. 10.100
  libavfilter     4.  2.100 /  4.  2.100
  libavresample   1.  2.  0 /  1.  2.  0
  libswscale      2.  5.102 /  2.  5.102
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0xe42900] stream 0, timescale not set
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tvp-continuum-s01e10-1080p.mkv':
  Metadata:
    major_brand     : mp42
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : HandBrake 0.10.0 2014112200
    title           : Der Anschlag
    artist          : Rachel Nichols, Victor Webster, Erik Knudsen, Stephen Lobo, Roger Cross, Lexa Doig, Tony Amendola, Omari Newton, Luvia Petersen, Jennifer Spence, Brian Markinson
    date            : 2012
    track           : 10/10
    genre           : Sci-Fi, Thriller
    show            : Continuum
    season_number   : 1
    episode_id      : 10-01
    episode_sort    : 10
  Duration: 00:42:07.21, start: 0.080000, bitrate: 4125 kb/s
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720, 2799 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(deu): Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 657 kb/s (default)
    Metadata:
      handler_name    : Surround
    Stream #0:2(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 658 kb/s
    Metadata:
      handler_name    : Surround
    Stream #0:3: Video: png, rgba, 480x660, 90k tbr, 90k tbn, 90k tbc
x265 [info]: HEVC encoder version 1.4
x265 [info]: build info [Linux][GCC 4.8.3][64 bit] 16bpp
x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
x265 [error]: Sample Aspect Ratio width must be greater than 0
[libx265 @ 0xf0c230] Cannot open libx265 encoder.
Output #0, matroska, to 'e10.mkv':
  Metadata:
    major_brand     : mp42
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : HandBrake 0.10.0 2014112200
    title           : Der Anschlag
    artist          : Rachel Nichols, Victor Webster, Erik Knudsen, Stephen Lobo, Roger Cross, Lexa Doig, Tony Amendola, Omari Newton, Luvia Petersen, Jennifer Spence, Brian Markinson
    date            : 2012
    track           : 10/10
    genre           : Sci-Fi, Thriller
    show            : Continuum
    season_number   : 1
    episode_id      : 10-01
    episode_sort    : 10
    Stream #0:0(und): Video: hevc, yuv420p, 1280x720, q=2-31, 200 kb/s, 90k tbn, 25 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(deu): Audio: ac3, 48000 Hz, 5.1, fltp (default)
    Metadata:
      handler_name    : Surround
    Stream #0:2(eng): Audio: ac3, 48000 Hz, 5.1, fltp
    Metadata:
      handler_name    : Surround
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> libx265)
  Stream #0:1 -> #0:1 (aac -> ac3)
  Stream #0:2 -> #0:2 (aac -> ac3)
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!