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• ffmpeg get machine readable output

  15 mai 2017, par J.S

  I am trying to find a way to get FFmpeg to return a machine readable output. basically, I just want to know if video conversion was successfull.

  I am calling FFmpeg from go code.

  output, err := exec.Command("ffmpeg", "-i", source, "-vcodec", "h264", "-acodec", "aac", "-strict", "-2", destination).CombinedOutput()

  The above code executes this command :

  ffmpeg -i /tmp/pitchVideo-1494844705-102.mp4 -vcodec h264 -acodec aac -strict -2 /tmp/1494844705.mp4

  I get the following output :

  ffmpeg version 2.4.3-1ubuntu1~trusty6 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Nov 22 2014 17:07:19 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --prefix=/usr --extra-version='1ubuntu1~trusty6' --build-suffix=-ffmpeg --toolchain=hardened --extra-cflags= --extra-cxxflags= --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-fontconfig --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-opengl --enable-x11grab --enable-libxvid --enable-libx265 --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libx264 --enable-libsoxr --enable-openal --enable-libopencv
  
    libavutil      54.  7.100 / 54.  7.100
  
    libavcodec     56.  1.100 / 56.  1.100
  
    libavformat    56.  4.101 / 56.  4.101
  
    libavdevice    56.  0.100 / 56.  0.100
  
    libavfilter     5.  1.100 /  5.  1.100
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  0.100 /  3.  0.100
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  0.100 / 53.  0.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/pitchVideo-1494844705-102.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf56.40.101
  
    Duration: 00:00:39.28, start: 0.000000, bitrate: 2300 kb/s
  
      Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x480, 2231 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 64 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  [libx264 @ 0x1e12640] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX LZCNT
  
  [libx264 @ 0x1e12640] profile High, level 3.0
  
  [libx264 @ 0x1e12640] 264 - core 142 r2389 956c8d8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=1 lookahead_threads=1 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, mp4, to '/tmp/new.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf56.4.101
  
      Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480, q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
        encoder         : Lavc56.1.100 libx264
  
      Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, mono, fltp, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
        encoder         : Lavc56.1.100 aac
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  frame=  983 fps= 27 q=28.0 Lsize=    4134kB time=00:00:39.24 bitrate= 863.0kbits/s dup=1 drop=0    
  
  video:3542kB audio:565kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.646525%
  
  [libx264 @ 0x1e12640] frame I:9     Avg QP:19.44  size:  9936
  
  [libx264 @ 0x1e12640] frame P:664   Avg QP:23.58  size:  4839
  
  [libx264 @ 0x1e12640] frame B:310   Avg QP:25.50  size:  1045
  
  [libx264 @ 0x1e12640] consecutive B-frames: 56.0%  4.3%  5.2% 34.6%
  
  [libx264 @ 0x1e12640] mb I  I16..4: 33.9% 53.6% 12.5%
  
  [libx264 @ 0x1e12640] mb P  I16..4:  6.7% 10.2%  0.9%  P16..4: 50.7%  8.3%  3.0%  0.0%  0.0%    skip:20.2%
  
  [libx264 @ 0x1e12640] mb B  I16..4:  0.4%  0.4%  0.0%  B16..8: 41.7%  1.4%  0.1%  direct: 1.3%  skip:54.7%  L0:46.9% L1:50.4% BI: 2.8%
  
  [libx264 @ 0x1e12640] 8x8 transform intra:56.8% inter:76.1%
  
  [libx264 @ 0x1e12640] coded y,uvDC,uvAC intra: 37.0% 60.5% 13.9% inter: 17.8% 26.0% 0.3%
  
  [libx264 @ 0x1e12640] i16 v,h,dc,p: 23% 35% 15% 27%
  
  [libx264 @ 0x1e12640] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 27% 21%  4%  4%  4%  4%  5%  5%
  
  [libx264 @ 0x1e12640] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 26% 14%  4%  5%  5%  5%  5%  4%
  
  [libx264 @ 0x1e12640] i8c dc,h,v,p: 53% 22% 19%  6%
  
  [libx264 @ 0x1e12640] Weighted P-Frames: Y:8.7% UV:3.5%
  
  [libx264 @ 0x1e12640] ref P L0: 73.8% 15.7%  8.4%  2.0%  0.1%
  
  [libx264 @ 0x1e12640] ref B L0: 92.9%  6.2%  0.9%
  
  [libx264 @ 0x1e12640] ref B L1: 96.1%  3.9%
  
  [libx264 @ 0x1e12640] kb/s:737.84

  Edit 1 : Maybe I can just check if new video file was generated. But I don’t know if that is a dependable way to do it.

• FFMPEG - Concatenate 2 MP4 Files, one has video and audio and the other has only audio

  5 août 2016, par Avi

  I am trying to merge 2 mp4 files using FFMPEG. One of these files has both video and audio (track1.mp4), while the other one has only audio (track2.mp4). The names of these files are listed in a text file called 'filesToMerge.txt' in the following manner :

  file 'track1.mp4'
  
  file 'track2.mp4'

  I then execute the following ffmpeg command to merge them.

  ffmpeg -f concat -i filesToMerge.txt -c copy output.mp4

  However, the concatenated file that is generated consists of only the first file that is listed in filesToMerge.txt. That is, if track1.mp4 (which has both video and audio) is the first file in the list, then only that file makes up output.mp4 (the concatenated file produced) and vice versa.

  I would like for both files to be in output.mp4. I am using Ubuntu 14.04 (if that helps). How can I solve this problem ?

  When I run this command
  ffmpeg -i track1.mp4 -i track2.mp4 output.mp4
  I get the following

  ffmpeg version N-76944-g15206ff Copyright (c) 2000-2015 the FFmpeg developers
  
        built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  
        configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libdcadec --enable-libfreetype --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvo-aacenc --enable-libvidstab
  
        libavutil      55.  9.100 / 55.  9.100
  
        libavcodec     57. 16.101 / 57. 16.101
  
        libavformat    57. 19.100 / 57. 19.100
  
        libavdevice    57.  0.100 / 57.  0.100
  
        libavfilter     6. 17.100 /  6. 17.100
  
        libavresample   3.  0.  0 /  3.  0.  0
  
        libswscale      4.  0.100 /  4.  0.100
  
        libswresample   2.  0.101 /  2.  0.101
  
        libpostproc    54.  0.100 / 54.  0.100
  
      Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'track1.mp4':
  
        Metadata:
  
          major_brand     : isom
  
          minor_version   : 512
  
          compatible_brands: isomiso2avc1mp41
  
          encoder         : Lavf56.40.101
  
        Duration: 00:00:10.76, start: 0.023220, bitrate: 351 kb/s
  
          Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x400 [SAR 400:533 DAR 800:533], 181 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
          Metadata:
  
            handler_name    : VideoHandler
  
          Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 194 kb/s (default)
  
          Metadata:
  
            handler_name    : SoundHandler
  
      Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'track2.mp4':
  
        Metadata:
  
          major_brand     : isom
  
          minor_version   : 512
  
          compatible_brands: isomiso2mp41
  
          creation_time   : 1970-01-01 00:00:00
  
          encoder         : Lavf52.32.0
  
        Duration: 00:00:32.21, start: 0.000000, bitrate: 46 kb/s
  
          Stream #1:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 43 kb/s (default)
  
          Metadata:
  
            creation_time   : 1970-01-01 00:00:00
  
            handler_name    : SoundHandler
  
      [libx264 @ 0x3950ce0] using SAR=400/533
  
      [libx264 @ 0x3950ce0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
  
      [libx264 @ 0x3950ce0] profile High, level 3.0
  
      [libx264 @ 0x3950ce0] 264 - core 142 r2491 24e4fed - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=1 lookahead_threads=1 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, mp4, to 'output.mp4':
  
        Metadata:
  
          major_brand     : isom
  
          minor_version   : 512
  
          compatible_brands: isomiso2avc1mp41
  
          encoder         : Lavf57.19.100
  
          Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 800x400 [SAR 400:533 DAR 800:533], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
  
          Metadata:
  
            handler_name    : VideoHandler
  
            encoder         : Lavc57.16.101 libx264
  
          Stream #0:1(und): Audio: aac (libfdk_aac) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s (default)
  
          Metadata:
  
            handler_name    : SoundHandler
  
            encoder         : Lavc57.16.101 libfdk_aac
  
      Stream mapping:
  
        Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
        Stream #0:1 -> #0:1 (aac (native) -> aac (libfdk_aac))
  
      Press [q] to stop, [?] for help
  
      frame=  270 fps= 99 q=28.0 Lsize=     382kB time=00:00:10.72 bitrate= 291.9kbits/s dup=1 drop=0    
  
      video:230kB audio:143kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.482656%
  
      [libx264 @ 0x3950ce0] frame I:2     Avg QP:18.87  size:109452
  
      [libx264 @ 0x3950ce0] frame P:68    Avg QP:15.09  size:   171
  
      [libx264 @ 0x3950ce0] frame B:200   Avg QP:23.33  size:    23
  
      [libx264 @ 0x3950ce0] consecutive B-frames:  1.1%  0.0%  1.1% 97.8%
  
      [libx264 @ 0x3950ce0] mb I  I16..4: 11.0% 39.6% 49.5%
  
      [libx264 @ 0x3950ce0] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  5.9%  0.1%  0.0%  0.0%  0.0%    skip:93.9%
  
      [libx264 @ 0x3950ce0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.3%  0.0%  0.0%  direct: 0.0%  skip:99.7%  L0:21.8% L1:78.2% BI: 0.0%
  
      [libx264 @ 0x3950ce0] 8x8 transform intra:39.7% inter:92.8%
  
      [libx264 @ 0x3950ce0] coded y,uvDC,uvAC intra: 92.0% 95.0% 73.2% inter: 0.1% 1.4% 0.0%
  
      [libx264 @ 0x3950ce0] i16 v,h,dc,p:  1% 30%  4% 66%
  
      [libx264 @ 0x3950ce0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  6% 55% 16%  2%  4%  2%  8%  2%  6%
  
      [libx264 @ 0x3950ce0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 18% 13%  7%  9%  7% 12%  6% 11%
  
      [libx264 @ 0x3950ce0] i8c dc,h,v,p: 44% 35% 10% 11%
  
      [libx264 @ 0x3950ce0] Weighted P-Frames: Y:0.0% UV:0.0%
  
      [libx264 @ 0x3950ce0] ref P L0: 98.1%  0.2%  1.1%  0.5%
  
      [libx264 @ 0x3950ce0] ref B L0: 85.1% 13.2%  1.7%
  
      [libx264 @ 0x3950ce0] ref B L1: 93.6%  6.4%
  
      [libx264 @ 0x3950ce0] kb/s:174.10

• ffmpeg : how to correctly program input framerate calculation, given desired video length duration and output framerate ?

  19 septembre 2015, par user89

  Let us say that I have n pictures named as imgXY.png (where XY represent the numbers 0 to n-1, properly padded with zeros).

  From these, I would like to create a video that is t seconds long, that has an (output) framerate R.

  I want to figure out what the input framerate should be, so I do the following calculation :

  • time spent per frame : t_per_frame = t/n

  • input framerate : 1/t_per_frame = n/t

  However, when I then try to create a movie using the following command :

  ffmpeg -framerate n/t -i img%02d.png -r 30 test_output.mp4

  I don’t get a movie that is t seconds long, and only two of the frames end up getting displayed. Why is this the case ?

  The following questions were unhelpful :

  How to successfully use ffmpeg to convert images into videos

  Turning images into videos with ffmpeg

  I think I am misunderstanding what is meant by input framerate, and what is meant by output framerate. Could you help clarify ? I am using a Python script to call ffmpeg, as documented here : http://zulko.github.io/blog/2013/09/27/read-and-write-video-frames-in-python-using-ffmpeg/

  Here’s the output from the following manually executed command :

  ffmpeg -framerate 24/5 -i img%02d.png -c:v libx264 -r 30 -pix_fmt yuv420p test_output.mp4

  ffmpeg version N-75204-g314bc20 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.9.3 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
  
  enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
  
  ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
  
  le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
  
  able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
  
  ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
  
   --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl
  
  e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena
  
  ble-decklink --enable-opencl --enable-zlib
  
    libavutil      55.  2.100 / 55.  2.100
  
    libavcodec     57.  1.100 / 57.  1.100
  
    libavformat    57.  0.100 / 57.  0.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6.  1.100 /  6.  1.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.100 /  2.  0.100
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, image2, from 'img%02d.png':
  
    Duration: 00:00:00.42, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: png, rgb24(pc), 800x400, 4.80 tbr, 4.80 tbn, 4.80 tbc
  
  File 'test_output.mp4' already exists. Overwrite ? [y/N] y
  
  [libx264 @ 0000000004f16ba0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0000000004f16ba0] profile High, level 3.0
  
  [libx264 @ 0000000004f16ba0] 264 - core 148 r2597 e86f3a1 - H.264/MPEG-4 AVC cod
  
  ec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 r
  
  ef=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_pski
  
  p=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 dec
  
  imate=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, mp4, to 'test_output.mp4':
  
    Metadata:
  
      encoder         : Lavf57.0.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 800x40
  
  0, q=-1--1, 30 fps, 15360 tbn, 30 tbc
  
      Metadata:
  
        encoder         : Lavc57.1.100 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  frame=   12 fps=0.0 q=-1.0 Lsize=       3kB time=00:00:00.33 bitrate=  62.2kbits
  
  /s dup=10 drop=0
  
  video:2kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing ove
  
  rhead: 60.557274%
  
  [libx264 @ 0000000004f16ba0] frame I:1     Avg QP:10.12  size:   566
  
  [libx264 @ 0000000004f16ba0] frame P:3     Avg QP:18.10  size:    62
  
  [libx264 @ 0000000004f16ba0] frame B:8     Avg QP:13.75  size:    22
  
  [libx264 @ 0000000004f16ba0] consecutive B-frames:  8.3%  0.0% 25.0% 66.7%
  
  [libx264 @ 0000000004f16ba0] mb I  I16..4: 99.4%  0.0%  0.6%
  
  [libx264 @ 0000000004f16ba0] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.0%  0.0
  
  %  0.0%  0.0%  0.0%    skip:99.9%
  
  [libx264 @ 0000000004f16ba0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.1%  0.0
  
  %  0.0%  direct: 0.0%  skip:99.9%  L0:37.5% L1:62.5% BI: 0.0%
  
  [libx264 @ 0000000004f16ba0] 8x8 transform intra:0.0% inter:0.0%
  
  [libx264 @ 0000000004f16ba0] coded y,uvDC,uvAC intra: 0.6% 0.0% 0.0% inter: 0.0%
  
   0.0% 0.0%
  
  [libx264 @ 0000000004f16ba0] i16 v,h,dc,p: 96%  0%  4%  0%
  
  [libx264 @ 0000000004f16ba0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 18% 36%  2%  2%
  
   3%  3%  5%  1%
  
  [libx264 @ 0000000004f16ba0] i8c dc,h,v,p: 100%  0%  0%  0%
  
  [libx264 @ 0000000004f16ba0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0000000004f16ba0] ref P L0: 50.0% 50.0%
  
  [libx264 @ 0000000004f16ba0] kb/s:18.50