a@b:~$ ffmpeg -i sample.ts -vf fieldmatch,decimate -vcodec libx264 out.mkv                               ffmpeg version N-74514-gfffae8e Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (Debian 4.9.2-10)
  configuration: --enable-gpl --enable-nonfree --enable-libx264 --enable-libx265 --enable-libfdk_aac --enable-libmp3lame
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 58.100 / 56. 58.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 34.100 /  5. 34.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
Input #0, mpegts, from 'sample.ts':
  Duration: 00:00:20.59, start: 1.400000, bitrate: 13685 kb/s
  Program 1
    Metadata:
      service_name    : Service01
      service_provider: FFmpeg
    Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv), 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, max. 38800 kb/s, 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
    Stream #0:1[0x101](eng): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 5.1(side), fltp, 384 kb/s
File 'out.mkv' already exists. Overwrite ? [y/N] y
[libx264 @ 0x2eebf00] using SAR=1/1
[libx264 @ 0x2eebf00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x2eebf00] profile High, level 4.0
[libx264 @ 0x2eebf00] 264 - core 148 r2579 73ae2d1 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=-2 threads=34 lookahead_threads=5 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=23 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 'out.mkv':
  Metadata:
    encoder         : Lavf56.40.101
    Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 23.98 fps, 1k tbn, 23.98 tbc
    Metadata:
      encoder         : Lavc56.58.100 libx264
    Stream #0:1(eng): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), fltp, 448 kb/s
    Metadata:
      encoder         : Lavc56.58.100 ac3
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (ac3 (native) -> ac3 (native))
Press [q] to stop, [?] for help
frame=  372 fps= 22 q=-1.0 Lsize=    8226kB time=00:00:20.57 bitrate=3275.9kbits/s
video:7093kB audio:1125kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.100427%
[libx264 @ 0x2eebf00] frame I:7     Avg QP:19.44  size: 95479
[libx264 @ 0x2eebf00] frame P:159   Avg QP:22.62  size: 30446
[libx264 @ 0x2eebf00] frame B:206   Avg QP:24.66  size:  8509
[libx264 @ 0x2eebf00] consecutive B-frames: 16.4% 26.9%  7.3% 49.5%
[libx264 @ 0x2eebf00] mb I  I16..4: 13.4% 82.1%  4.5%
[libx264 @ 0x2eebf00] mb P  I16..4:  1.6%  6.8%  0.2%  P16..4: 45.7% 10.4%  6.4%  0.0%  0.0%    skip:28.8%
[libx264 @ 0x2eebf00] mb B  I16..4:  0.1%  0.3%  0.0%  B16..8: 45.4%  1.6%  0.3%  direct: 1.1%  skip:51.1%  L0:45.5% L1:51.7% BI: 2.8%
[libx264 @ 0x2eebf00] 8x8 transform intra:79.4% inter:88.3%
[libx264 @ 0x2eebf00] coded y,uvDC,uvAC intra: 62.5% 61.8% 20.6% inter: 14.9% 17.2% 0.6%
[libx264 @ 0x2eebf00] i16 v,h,dc,p: 22% 29%  9% 40%
[libx264 @ 0x2eebf00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 19% 28%  5%  5%  5%  6%  5%  6%
[libx264 @ 0x2eebf00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 22% 11%  6% 10%  8% 10%  6%  5%
[libx264 @ 0x2eebf00] i8c dc,h,v,p: 52% 23% 20%  4%
[libx264 @ 0x2eebf00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x2eebf00] ref P L0: 65.2% 14.4% 14.2%  6.2%
[libx264 @ 0x2eebf00] ref B L0: 90.6%  8.0%  1.4%
[libx264 @ 0x2eebf00] ref B L1: 96.1%  3.9%
[libx264 @ 0x2eebf00] kb/s:3744.46