[FFmpeg-trac] #7617(undetermined:new): ffmpeg performance on OSX

FFmpeg trac at avcodec.org
Sat Dec 15 20:20:28 EET 2018


#7617: ffmpeg performance on OSX
-------------------------------------+-------------------------------------
             Reporter:  monochromec  |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  osx          |               Blocked By:
  performance                        |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug: eliminating a track from an MKV container on 10.14.2
 (model 14,2 16 GB main memory) takes two hours vs. five minutes on an
 Armada XP (32 ARM v7). Video file is approx. 2.5 GB.
 How to reproduce:
 {{{
 %  ffmpeg -i in.mkv -map 0 -map -1:a:0 out.mkv
 ffmpeg version: Installed via homebrew

 ffmpeg version 4.1 Copyright (c) 2000-2018 the FFmpeg developers
   built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1 --enable-shared
 --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-
 avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay
 --enable-gpl --enable-libmp3lame --enable-libopus --enable-libsnappy
 --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264
 --enable-libx265 --enable-libxvid --enable-lzma --enable-opencl --enable-
 videotoolbox
   libavutil      56. 22.100 / 56. 22.100
   libavcodec     58. 35.100 / 58. 35.100
   libavformat    58. 20.100 / 58. 20.100
   libavdevice    58.  5.100 / 58.  5.100
   libavfilter     7. 40.101 /  7. 40.101
   libavresample   4.  0.  0 /  4.  0.  0
   libswscale      5.  3.100 /  5.  3.100
   libswresample   3.  3.100 /  3.  3.100
   libpostproc    55.  3.100 / 55.  3.100


 }}}
 More than happy to provide more info as required - please let me know if
 this should go to homebrew instead but I suspect a more generic issue in
 code base.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7617>
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