ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 7.2.1 (GCC) 20171128
  configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-avresample --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libass --enable-libbluray --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid --enable-shared --enable-version3
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Input #0, matroska,webm, from '/home/nils/xvfb/fancytext-CCC Cologne-2018-01-03_23-02-54.mkv':
  Metadata:
    ENCODER         : Lavf57.83.100
  Duration: 00:00:14.85, start: 0.000000, bitrate: 198912 kb/s
    Stream #0:0: Video: h264 (High 4:4:4 Predictive), gbrp(tv, gbr/unknown/unknown, progressive), 1920x1080, 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default)
    Metadata:
      ENCODER         : Lavc57.107.100 libx264rgb
      DURATION        : 00:00:14.848000000
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x561733ad05c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX XOP FMA4 FMA3 LZCNT BMI1
[libx264 @ 0x561733ad05c0] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
[libx264 @ 0x561733ad05c0] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, matroska, to '/home/nils/xvfb/fancytext-CCC Cologne-2018-01-03_23-02-54.mkv-faded.mkv':
  Metadata:
    encoder         : Lavf57.83.100
    Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 1920x1080, q=-1--1, 29.97 fps, 1k tbn, 29.97 tbc (default)
    Metadata:
      DURATION        : 00:00:14.848000000
      encoder         : Lavc57.107.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Invalid return value 0 for stream protocol time=00:00:12.41 bitrate=2561.4kbits/s speed=0.789x
    Last message repeated 1 times
frame=  445 fps= 26 q=-1.0 Lsize=    4608kB time=00:00:14.74 bitrate=2559.6kbits/s speed=0.847x
video:4604kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.090673%
[libx264 @ 0x561733ad05c0] frame I:25    Avg QP:19.09  size: 36049
[libx264 @ 0x561733ad05c0] frame P:146   Avg QP:22.11  size: 15418
[libx264 @ 0x561733ad05c0] frame B:274   Avg QP:23.31  size:  5700
[libx264 @ 0x561733ad05c0] consecutive B-frames: 15.3%  7.2%  2.0% 75.5%
[libx264 @ 0x561733ad05c0] mb I  I16..4: 15.2% 79.6%  5.2%
[libx264 @ 0x561733ad05c0] mb P  I16..4:  0.6%  1.7%  0.6%  P16..4: 20.1%  3.2%  6.4%  0.0%  0.0%    skip:67.3%
[libx264 @ 0x561733ad05c0] mb B  I16..4:  0.0%  0.1%  0.0%  B16..8: 29.0%  1.1%  0.4%  direct: 0.5%  skip:68.9%  L0:50.1% L1:48.3% BI: 1.5%
[libx264 @ 0x561733ad05c0] 8x8 transform intra:76.2% inter:88.7%
[libx264 @ 0x561733ad05c0] coded y,u,v intra: 48.1% 13.6% 11.5% inter: 6.9% 0.9% 0.5%
[libx264 @ 0x561733ad05c0] i16 v,h,dc,p: 50% 37%  9%  4%
[libx264 @ 0x561733ad05c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 17% 29%  4%  4%  3%  4%  3%  3%
[libx264 @ 0x561733ad05c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 39% 20% 14%  5%  6%  5%  4%  4%  3%
[libx264 @ 0x561733ad05c0] Weighted P-Frames: Y:41.1% UV:32.2%
[libx264 @ 0x561733ad05c0] ref P L0: 49.4%  6.1% 21.1% 16.7%  6.7%
[libx264 @ 0x561733ad05c0] ref B L0: 67.3% 23.6%  9.1%
[libx264 @ 0x561733ad05c0] ref B L1: 91.9%  8.1%
[libx264 @ 0x561733ad05c0] kb/s:2539.88