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• avfilter/scale* : add option reset_sar

  31 janvier, par Gyan Doshi

  avfilter/scale* : add option reset_sar
  For anamorphic videos, enabling this option leads to adjustment of
  
  output dimensions to obtain square pixels when the user requests
  
  proportional scaling through either of the w/h expressions or
  
  force_original_aspect_ratio.
  Output SAR is always reset to 1.
  Option added to scale, scale_cuda, scale_npp & scale_vaapi.
  libplacebo already has a similar option with different semantics,
  
  scale_vt and scale_vulkan don't implement force_oar, so for these
  
  three filters, I've made minimal changes needed to not break building
  
  or change output.
  

  • [DH] doc/filters.texi
  • [DH] libavfilter/scale_eval.c
  • [DH] libavfilter/scale_eval.h
  • [DH] libavfilter/vf_libplacebo.c
  • [DH] libavfilter/vf_scale.c
  • [DH] libavfilter/vf_scale_cuda.c
  • [DH] libavfilter/vf_scale_npp.c
  • [DH] libavfilter/vf_scale_vaapi.c
  • [DH] libavfilter/vf_scale_vt.c
  • [DH] libavfilter/vf_scale_vulkan.c

• qsv : add requirement for the mininal version of libmfx

  22 mai 2022, par Haihao Xiang

  qsv : add requirement for the mininal version of libmfx
  libmfx 1.28 was released 3 years ago, it is easy to get a greater
  
  version than 1.28. We may remove lots of compile-time checks if adding
  
  the requirement for the minimal version in the configure script.
  Reviewed-by : softworkz <softworkz@hotmail.com>
  
  Signed-off-by : Jean-Baptiste Kempf <jb@videolan.org>
  
  Signed-off-by : Haihao Xiang <haihao.xiang@intel.com>
  

  • [DH] configure
  • [DH] libavcodec/qsv.c
  • [DH] libavcodec/qsvenc.c
  • [DH] libavcodec/qsvenc.h
  • [DH] libavcodec/qsvenc_h264.c
  • [DH] libavcodec/qsvenc_hevc.c
  • [DH] libavfilter/vf_scale_qsv.c
  • [DH] libavfilter/vf_vpp_qsv.c
  • [DH] libavutil/hwcontext_qsv.c

• ffmpeg build from source fails in docker container ?

  24 mars 2016, par John Allard

  I’m trying to make some changes to the ffmpeg source code (yes, I’m a masochist), and to start I booted an Arch Linux docker container, installed the requirements, downloaded ffmpeg source code, and tried to compile, but I’m getting some extremely odd errors.

  compile command :

  ./configure --bindidr=~/ffmpeg_build --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree

  Output :

  ./configure:unset:3338: no such has table element: mktemp
  
  pr: /tmp/ffconf.uQI7CeV.c: No such file or directory.
  
  pr: /tmp/ffconf.uQI7CeV.c: No such file or directory.
  
  pr: /tmp/ffconf.uQI7CeV.c: No such file or directory.
  
  pr: /tmp/ffconf.uQI7CeV.c: No such file or directory.
  
  ... (24 times)
  
  pr: /tmp/ffconf.uQI7CeV.c: No such file or directory.
  
  pr: /tmp/ffconf.r547UgWy.m: No such file or directory.
  
  ./configure:53378: parse error near '}'
  
  ==> ERROR" A failure occured in build()
  
      Aborting...
  
  The build failed.

  This doesn’t seem to be a problem with ffmpeg, more a problem with the container. If I check find /tmp -name ffconf\* I see that the files do exist and they contain

  extern int getrusage();
  
  int main(void){ getrusage(); }

  what in the hell is going on ? hash tabled ? mktemp not working ? files not being found ?

  edit-

  here is what is on the line numbers in the files that give the errors

  3338:configure - unset -f mktemp
  
  5338:configure - check_builtin gmtime_r time.g "time_t * time; strict tm*; gmtime_r(time, tm)"

  edit2 - Here’s the dockerfile (cloned from here https://hub.docker.com/r/greyltc/archlinux/ /dockerfile/)

  # Arch Linux baseline docker container
  
  # Generated on Sat Mar 19 14:26:28 GMT 2016 using code in this GitHub repo:
  
  # https://github.com/greyltc/docker-archlinux
  
  FROM scratch
  
  MAINTAINER Grey Christoforo <grey@christoforo.net>
  
  
  
  # copy in super minimal root filesystem archive
  
  ADD archlinux.tar.xz /
  
  
  
  # perform initial container setup tasks
  
  RUN setup-arch-docker-container
  
  
  
  # this allows the system profile to be sourced at every shell
  
  ENV ENV /etc/profile