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  1. ffmpeg -hide_banner -i Helicopter.mp4 -threads 0 -vf "scale=426:240" -c:v libx264 -preset slow -profile:v main -level 4 -g 60 -keyint_min 60 -x264-params "keyint=60:min-keyint=60:no-scenecut" -b:v 300k -maxrate 300k -bufsize 600k -r:v 30 -an -y -f mp4 Helicopter_240p_300.mp4
  2.  
  3. Unrecognized option 'x264-params'.
  4. Error splitting the argument list: Option not found
  5.  
  6. I did this:
  7. avconv -codecs | grep h264
  8. avconv version 9.20-6:9.20-0ubuntu0.14.04.1, Copyright (c) 2000-2014 the Libav developers built on Dec  7 2016 21:27:42 with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
  9. DEV.LS h264   H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_vdpau ) (encoders: libx264 )
  10.  
  11. The following are the enabled library of ffmpeg, but in my ffmpeg_build directory I have also x264 executable (it is also in the ujsr/local/bin directory). It seems I have not setted it in the properly way...
  12.  
  13. ffmpeg version N-86654-gd2ef9e6 Copyright (c) 2000-2017 the FFmpeg developers
  14.   built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
  15.   configuration: --disable-x86asm
  16.   libavutil      55. 67.100 / 55. 67.100
  17.   libavcodec     57.100.102 / 57.100.102
  18.   libavformat    57. 75.100 / 57. 75.100
  19.   libavdevice    57.  7.100 / 57.  7.100
  20.   libavfilter     6. 94.100 /  6. 94.100
  21.   libswscale      4.  7.101 /  4.  7.101
  22.   libswresample   2.  8.100 /  2.  8.100
  23.  
  24.  I have followed the step by step guide of ffmpeg.org : https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu
  25.  
  26. Could the problem be the configuration --disable-x86asm ?
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