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• How to record audio and video on macos with ffmpeg ?

  5 janvier 2024, par chovy

  $ ffmpeg -f avfoundation -list_devices true -i ""
...
[AVFoundation indev @ 0x7fa8c24312c0] AVFoundation video devices:
[AVFoundation indev @ 0x7fa8c24312c0] [0] FaceTime HD Camera
[AVFoundation indev @ 0x7fa8c24312c0] [1] Capture screen 0
[AVFoundation indev @ 0x7fa8c24312c0] AVFoundation audio devices:
[AVFoundation indev @ 0x7fa8c24312c0] [0] MacBook Pro Microphone


  


  These are my audio and video devices.
I'm trying to record audio from mic and video capture of screen.
However when I try to run the command I get this error :

  


  $ ffmpeg -f avfoundation -i "1:0"  \             
  ~/Videos/screencast.mp4
ffmpeg version 4.3.2 Copyright (c) 2000-2021 the FFmpeg developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.29)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
[AVFoundation indev @ 0x7fced1c315c0] Configuration of video device failed, falling back to default.
[avfoundation @ 0x7fced2009000] Selected pixel format (yuv420p) is not supported by the input device.
[avfoundation @ 0x7fced2009000] Supported pixel formats:
[avfoundation @ 0x7fced2009000]   uyvy422
[avfoundation @ 0x7fced2009000]   yuyv422
[avfoundation @ 0x7fced2009000]   nv12
[avfoundation @ 0x7fced2009000]   0rgb
[avfoundation @ 0x7fced2009000]   bgr0
[avfoundation @ 0x7fced2009000] Overriding selected pixel format to use uyvy422 instead.


  


  Additionally I'd like to capture camera in lower right. This is how I do it on Linux, but the basics don't even work on MacOS.

  


  screencap() {
  file=`date +%Y-%m-%d-%H.%M.%S`
  ffmpeg -f alsa -i pulse -f x11grab -thread_queue_size 64 -i :0.0 \
  -video_size 384x216 -i /dev/video0 \
        -filter_complex 'overlay=main_w-overlay_w:main_h-overlay_h' \
  -r 60 -preset ultrafast ~/Videos/screencast-${file}.mp4
}


  


• FFMpeg Unknown function in zoompan filter

  4 août 2022, par Luciano Salemme

  i'm using ffmpeg with zoompan filter in my local environment whit the following command and it works well :

  


  ffmpeg -y -i "https://my.domain/workspaces/1/a_render_dir/video_spotx.mp4" -i "https://my.domain/workspaces/1/Gallery/travel_6.jpeg" -i "https://my.domain/workspaces/1/Gallery/travel_6.jpeg" -i "https://my.domain/workspaces/1/Gallery/travel_6.jpeg" -i "/usr/app/src/output/video.mp4/text_0.png" -i "/usr/app/src/output/video.mp4/text_1.png"    -filter_complex "[0]drawbox=x=0:y=0:w=iw:h=ih:color=00FF00@1:t=fill[padded];[0]format=yuva420p,pad=iw*2:ih*2:color=black@0,zoompan=z='if(lt(it,0),2,if(lte(pzoom,1.0),2,max(1.56,pzoom-0.005789473684210526)))':x=0:y=0:d=1:s=950x540[zp],[padded][zp]overlay=x='if(lt(t,3.04),t*213/3.04,213)':y='if(lt(t,3.04),t*50/3.04,50)':eval=frame[zp_stream],[1:v]scale=237.5:-1 [image1],[2:v]scale=237.5:-1 [image2],[3:v]scale=237.5:-1 [image3],[4:v]scale=475:-1 [image4],[5:v]scale=237.5:-1 [image5],[zp_stream][image1] overlay=95:54:enable='between(t,3,8)' [overlay1],[overlay1][image2] overlay=380:216:enable='between(t,3,8)' [overlay2],[overlay2][image3] overlay=532:54:enable='between(t,5,10)' [overlay3],[overlay3][image4] overlay=475:270:enable='between(t,1,8)' [overlay4],[overlay4][image5] overlay=0:0:enable='between(t,1,8)' [overlay5]" -map "[overlay5]" -pix_fmt yuv420p -map 0:a -c:a copy "/usr/app/src/output/video.mp4/render_video.mp4"


  


  However when i build a docker container and run that command it is not working. The output error is the following :

  


  [Parsed_zoompan_3 @ 0x2a08ac0c5140] [Eval @ 0x3ec4ec4c9ad0] Unknown function in 'it,0),2,if(lte(pzoom,1.0),2,max(1.56,pzoom-0.005789473684210526)))'


  


  I tried to add a fixed z value to the zoompan filter, and the command works also inside the container, so the issue is on the zoompan syntax.

  


  Here is my docker file

  


  FROM node:16

ENV NODE_ENV=production

RUN apt-get -y update && \
    apt-get install -y  ffmpeg \
    build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev 

WORKDIR /usr/src/app
COPY . .
RUN npm ci --production --silent

CMD node src/index.js


  


  Problem starts when i switch on new Macbook pro with M1 processor, but i'm not sure it's related, i build the image with the following command :

  


  docker buildx build --platform linux/x86_64  -t render-job .


  


  On my macchine there is ffmpeg 5.0.1 installed, but on docker container the command apt-get install -y     ffmpeg installs just the follow wersion :

  


  ffmpeg version 4.1.9-0+deb10u1 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)


  


  I don't think is relate to the version, because before to build with M1 processor the zoompan filter was working also in the container.

  


  Any help is appreciated.
Thanks.

  


• ffmpeg : corrupt audio in usage of avfoundation

  3 janvier 2016, par Andy

  I am trying to record my desktop screen (MacBook Pro (Retina, 15-inch, Mid 2014), OSX 10.10.5) with audio. First, I have to find the devices for recording, video:1 and audio:0 in my case.

  User@User-MacBook-Pro:~/test$ ffmpeg -hide_banner -f avfoundation -list_devices true -i ""
  
  [AVFoundation input device @ 0x7ff19a422320] AVFoundation video devices:
  
  [AVFoundation input device @ 0x7ff19a422320] [0] FaceTime HD Camera
  
  [AVFoundation input device @ 0x7ff19a422320] [1] Capture screen 0
  
  [AVFoundation input device @ 0x7ff4b9c22320] [2] Capture screen 1
  
  [AVFoundation input device @ 0x7ff19a422320] AVFoundation audio devices:
  
  [AVFoundation input device @ 0x7ff19a422320] [0] Soundflower (2ch)
  
  [AVFoundation input device @ 0x7ff19a422320] [1] Built-in Microphone
  
  [AVFoundation input device @ 0x7ff19a422320] [2] Soundflower (64ch)
  
  : Input/output error

  Then I run to capture the screen :

  ffmpeg -f avfoundation -i "1:0" out_desktop.mkv

  and the audio of the output stutters terribly.
  But if I use the second external screen (which is connect via HDMI) :

  ffmpeg -f avfoundation -i "2:0" out_ext.mkv

  Then I have no audio problems.

  So, what could be the cause of this behaviour ? Somehow the video device "Capture screen 0" causes the audio stutter.

  Here are the full outputs of the two commands above, Screen 0 :

  User@User-MacBook-Pro:~/test$ ffmpeg -f avfoundation -i "1:0" out.mkv
  
  ffmpeg version 2.8.4 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 7.0.2 (clang-700.1.81)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/1.5.2_1/include/openjpeg-1.5 --enable-nonfree --enable-vda
  
    libavutil      54. 31.100 / 54. 31.100
  
    libavcodec     56. 60.100 / 56. 60.100
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 40.101 /  5. 40.101
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [avfoundation @ 0x7fca1200da00] Selected pixel format (yuv420p) is not supported by the input device.
  
  [avfoundation @ 0x7fca1200da00] Supported pixel formats:
  
  [avfoundation @ 0x7fca1200da00]   uyvy422
  
  [avfoundation @ 0x7fca1200da00]   yuyv422
  
  [avfoundation @ 0x7fca1200da00]   nv12
  
  [avfoundation @ 0x7fca1200da00]   0rgb
  
  [avfoundation @ 0x7fca1200da00]   bgr0
  
  [avfoundation @ 0x7fca1200da00] Overriding selected pixel format to use uyvy422 instead.
  
  [avfoundation @ 0x7fca1200da00] Stream #0: not enough frames to estimate rate; consider increasing probesize
  
  Input #0, avfoundation, from '1:0':
  
    Duration: N/A, start: 11734.092500, bitrate: 2822 kb/s
  
      Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 2880x1800, 1000k tbr, 1000k tbn, 1000k tbc
  
      Stream #0:1: Audio: pcm_f32le, 44100 Hz, stereo, flt, 2822 kb/s
  
  File 'out.mkv' already exists. Overwrite ? [y/N] y
  
  No pixel format specified, yuv422p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264 @ 0x7fca1390e000] MB rate (20340000000) > level limit (2073600)
  
  [libx264 @ 0x7fca1390e000] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x7fca1390e000] profile High 4:2:2, level 5.2, 4:2:2 8-bit
  
  [libx264 @ 0x7fca1390e000] 264 - core 148 r2601 a0cd7d3 - 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=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 'out.mkv':
  
    Metadata:
  
      encoder         : Lavf56.40.101
  
      Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv422p, 2880x1800, q=-1--1, 1000k fps, 1k tbn, 1000k tbc
  
      Metadata:
  
        encoder         : Lavc56.60.100 libx264
  
      Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 44100 Hz, stereo, fltp
  
      Metadata:
  
        encoder         : Lavc56.60.100 libvorbis
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (pcm_f32le (native) -> vorbis (libvorbis))
  
  Press [q] to stop, [?] for help
  
  frame=  969 fps= 29 q=-1.0 Lsize=    6911kB time=00:00:34.80 bitrate=1626.8kbits/s    
  
  video:6475kB audio:396kB subtitle:0kB other streams:0kB global headers:4kB muxing overhead: 0.591309%
  
  [libx264 @ 0x7fca1390e000] frame I:4     Avg QP:15.77  size:1461092
  
  [libx264 @ 0x7fca1390e000] frame P:246   Avg QP:16.00  size:  2608
  
  [libx264 @ 0x7fca1390e000] frame B:719   Avg QP:13.91  size:   200
  
  [libx264 @ 0x7fca1390e000] consecutive B-frames:  0.9%  0.4%  0.0% 98.7%
  
  [libx264 @ 0x7fca1390e000] mb I  I16..4: 11.6% 43.3% 45.2%
  
  [libx264 @ 0x7fca1390e000] mb P  I16..4:  0.0%  0.0%  0.1%  P16..4:  0.4%  0.0%  0.0%  0.0%  0.0%    skip:99.5%
  
  [libx264 @ 0x7fca1390e000] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:39.9% L1:60.0% BI: 0.1%
  
  [libx264 @ 0x7fca1390e000] 8x8 transform intra:41.6% inter:38.8%
  
  [libx264 @ 0x7fca1390e000] coded y,uvDC,uvAC intra: 76.9% 77.9% 75.5% inter: 0.0% 0.1% 0.0%
  
  [libx264 @ 0x7fca1390e000] i16 v,h,dc,p: 51% 34% 11%  4%
  
  [libx264 @ 0x7fca1390e000] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 17% 19%  7%  4%  3%  8%  5% 16%
  
  [libx264 @ 0x7fca1390e000] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 24% 10%  7%  6%  5%  8%  7% 12%
  
  [libx264 @ 0x7fca1390e000] i8c dc,h,v,p: 59% 14% 18%  9%
  
  [libx264 @ 0x7fca1390e000] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7fca1390e000] ref P L0: 71.5%  3.4% 13.0% 12.1%
  
  [libx264 @ 0x7fca1390e000] ref B L0: 46.6% 52.3%  1.1%
  
  [libx264 @ 0x7fca1390e000] ref B L1: 95.1%  4.9%
  
  [libx264 @ 0x7fca1390e000] kb/s:1525.48

  and Screen 1 :

  User@User-MacBook-Pro:~/test$ ffmpeg -f avfoundation -i "2:0" out.mkv
  
  ffmpeg version 2.8.4 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 7.0.2 (clang-700.1.81)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/1.5.2_1/include/openjpeg-1.5 --enable-nonfree --enable-vda
  
    libavutil      54. 31.100 / 54. 31.100
  
    libavcodec     56. 60.100 / 56. 60.100
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 40.101 /  5. 40.101
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [avfoundation @ 0x7fc2e900da00] Selected pixel format (yuv420p) is not supported by the input device.
  
  [avfoundation @ 0x7fc2e900da00] Supported pixel formats:
  
  [avfoundation @ 0x7fc2e900da00]   uyvy422
  
  [avfoundation @ 0x7fc2e900da00]   yuyv422
  
  [avfoundation @ 0x7fc2e900da00]   nv12
  
  [avfoundation @ 0x7fc2e900da00]   0rgb
  
  [avfoundation @ 0x7fc2e900da00]   bgr0
  
  [avfoundation @ 0x7fc2e900da00] Overriding selected pixel format to use uyvy422 instead.
  
  [avfoundation @ 0x7fc2e900da00] Stream #0: not enough frames to estimate rate; consider increasing probesize
  
  Input #0, avfoundation, from '2:0':
  
    Duration: N/A, start: 11809.126333, bitrate: 2822 kb/s
  
      Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 2560x1080, 1000k tbr, 1000k tbn, 1000k tbc
  
      Stream #0:1: Audio: pcm_f32le, 44100 Hz, stereo, flt, 2822 kb/s
  
  File 'out.mkv' already exists. Overwrite ? [y/N] y
  
  No pixel format specified, yuv422p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264 @ 0x7fc2ea82ac00] MB rate (10880000000) > level limit (2073600)
  
  [libx264 @ 0x7fc2ea82ac00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x7fc2ea82ac00] profile High 4:2:2, level 5.2, 4:2:2 8-bit
  
  [libx264 @ 0x7fc2ea82ac00] 264 - core 148 r2601 a0cd7d3 - 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=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 'out.mkv':
  
    Metadata:
  
      encoder         : Lavf56.40.101
  
      Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv422p, 2560x1080, q=-1--1, 1000k fps, 1k tbn, 1000k tbc
  
      Metadata:
  
        encoder         : Lavc56.60.100 libx264
  
      Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 44100 Hz, stereo, fltp
  
      Metadata:
  
        encoder         : Lavc56.60.100 libvorbis
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (pcm_f32le (native) -> vorbis (libvorbis))
  
  Press [q] to stop, [?] for help
  
  frame=  755 fps= 30 q=-1.0 Lsize=    1025kB time=00:00:26.65 bitrate= 315.1kbits/s    
  
  video:680kB audio:326kB subtitle:0kB other streams:0kB global headers:4kB muxing overhead: 2.003084%
  
  [libx264 @ 0x7fc2ea82ac00] frame I:4     Avg QP:13.22  size:145661
  
  [libx264 @ 0x7fc2ea82ac00] frame P:191   Avg QP:19.87  size:   250
  
  [libx264 @ 0x7fc2ea82ac00] frame B:560   Avg QP:28.31  size:   116
  
  [libx264 @ 0x7fc2ea82ac00] consecutive B-frames:  1.1%  0.0%  0.4% 98.5%
  
  [libx264 @ 0x7fc2ea82ac00] mb I  I16..4: 54.5% 29.2% 16.2%
  
  [libx264 @ 0x7fc2ea82ac00] mb P  I16..4:  0.2%  0.1%  0.0%  P16..4:  0.1%  0.0%  0.0%  0.0%  0.0%    skip:99.6%
  
  [libx264 @ 0x7fc2ea82ac00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.3%  0.0%  0.0%  direct: 0.0%  skip:99.7%  L0:69.2% L1:30.8% BI: 0.0%
  
  [libx264 @ 0x7fc2ea82ac00] 8x8 transform intra:31.7% inter:13.1%
  
  [libx264 @ 0x7fc2ea82ac00] coded y,uvDC,uvAC intra: 10.9% 8.8% 8.5% inter: 0.0% 0.0% 0.0%
  
  [libx264 @ 0x7fc2ea82ac00] i16 v,h,dc,p: 69% 31%  0%  0%
  
  [libx264 @ 0x7fc2ea82ac00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27%  5% 67%  0%  0%  0%  0%  0%  0%
  
  [libx264 @ 0x7fc2ea82ac00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 25% 14%  3%  3%  4%  5%  4%  5%
  
  [libx264 @ 0x7fc2ea82ac00] i8c dc,h,v,p: 92%  3%  4%  0%
  
  [libx264 @ 0x7fc2ea82ac00] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7fc2ea82ac00] ref P L0: 76.3%  1.7% 16.8%  5.2%
  
  [libx264 @ 0x7fc2ea82ac00] ref B L0: 38.9% 56.9%  4.2%
  
  [libx264 @ 0x7fc2ea82ac00] ref B L1: 97.3%  2.7%
  
  [libx264 @ 0x7fc2ea82ac00] kb/s:208.84

  EDIT

  The main differences between the two (lengthy) outputs above via

  wdiff -n output1 output2 |colordiff

  is the resolution ([-2880x1800,-] {+2560x1080,+}) and the resulting MB rate ([-(20340000000)-] {+(10880000000)+}). So, what could increase the performance of ffmpeg ?