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• FFMPEG with SoX : configure : error : cannot find ffmpeg

  17 janvier 2014, par Alberto Megía

  So I am trying to install in my Ubuntu Desktop 12.04 SoX with FFMPEG support for m4a files.

  I have followed this instructions to install FFMPEG, installing only certain encoders. Finally, this is my set up :

  ffmpeg version git-2014-01-17-3ca7085 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jan 17 2014 12:36:01 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
    configuration: --prefix=~/ffmpeg_build --extra-cflags=-I~/ffmpeg_build/include --extra-ldflags=-L~/ffmpeg_build/lib --bindir=~/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-nonfree
  
    libavutil      52. 62.100 / 52. 62.100
  
    libavcodec     55. 48.101 / 55. 48.101
  
    libavformat    55. 23.103 / 55. 23.103
  
    libavdevice    55.  5.102 / 55.  5.102
  
    libavfilter     4.  1.100 /  4.  1.100
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Hyper fast Audio and Video encoder

  Then, I wget SoX 14.4.1 version and try to configure with FFMPEG support like this :

  ./configure --with-ffmpeg

  But I get this error :

  checking for FFMPEG... no
  
  checking libavformat/avformat.h usability... no
  
  checking libavformat/avformat.h presence... no
  
  checking for libavformat/avformat.h... no
  
  checking ffmpeg/avformat.h usability... no
  
  checking ffmpeg/avformat.h presence... no
  
  checking for ffmpeg/avformat.h... no
  
  configure: error: in `~/sox-14.4.1':
  
  configure: error: cannot find ffmpeg
  
  See `config.log' for more details

  So I try to set PKG_CONFIG_PATH environment variable :

  PKG_CONFIG_PATH=~/ffmpeg_build/lib/pkgconfig
  
  ./configure --with-ffmpeg

  Getting :

  checking for FFMPEG... yes
  
  checking libavformat/avformat.h usability... yes
  
  checking libavformat/avformat.h presence... yes
  
  checking for libavformat/avformat.h... yes
  
  checking for av_open_input_file in -lavformat... no
  
  configure: error: in `~/sox-14.4.1':
  
  configure: error: cannot find ffmpeg
  
  See `config.log' for more details

  Checking 'config.log' I see the following error :

  | #define HAVE_LIBAVFORMAT_AVFORMAT_H 1
  
  | /* end confdefs.h.  */
  
  |
  
  | /* Override any GCC internal prototype to avoid an error.
  
  |    Use char because int might match the return type of a GCC
  
  |    builtin and then its argument prototype would still apply.  */
  
  | #ifdef __cplusplus
  
  | extern "C"
  
  | #endif
  
  | char av_open_input_file ();
  
  | int
  
  | main ()
  
  | {
  
  | return av_open_input_file ();
  
  |   ;
  
  |   return 0;
  
  | }
  
  configure:15862: result: no
  
  configure:15935: error: in `~/sox-14.4.1':
  
  configure:15937: error: cannot find ffmpeg

  What am I missing here ?
  Thx !

• opencv cmake didn't find lastest ffmpeg libs

  20 janvier 2014, par Eric

  Here the output of the ffmpeg command :

  ffmpeg version git-2014-01-20-4014b40 Copyright (c) 2000-2014 the FFmpeg developers
  
  built on Jan 20 2014 14:18:13 with gcc 4.8 (Ubuntu/Linaro 4.8.1-10ubuntu9)
  
  configuration: --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --    enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --  enable-libx264 --enable-nonfree --enable-x11grab
  
  libavutil      52. 63.100 / 52. 63.100
  
  libavcodec     55. 48.101 / 55. 48.101
  
  libavformat    55. 25.100 / 55. 25.100
  
  libavdevice    55.  5.102 / 55.  5.102
  
  libavfilter     4.  1.100 /  4.  1.100
  
  libswscale      2.  5.101 /  2.  5.101
  
  libswresample   0. 17.104 /  0. 17.104
  
  libpostproc    52.  3.100 / 52.  3.100
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

  When running CmakeLists.txt for Opencv 2.4.8 installation :

  cmake -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX=/usr/local -DBUILD_NEW_PYTHON_SUPPORT=ON -DWITH_TBB=ON -DWITH_V4L=ON -DWITH_QT=ON -DWITH_OPENGL=ON -DWITH_EIGEN=ON -DWITH_OPENEXR=ON ..

  I get :

  --   Video I/O:
  
  --     DC1394 1.x:                  NO
  
  --     DC1394 2.x:                  YES (ver 2.2.1)
  
  --     FFMPEG:                      YES
  
  --       codec:                     YES (ver 53.35.0)
  
  --       format:                    YES (ver 53.21.1)
  
  --       util:                      YES (ver 51.22.1)
  
  --       swscale:                   YES (ver 2.1.0)
  
  --       gentoo-style:              YES
  
  --     GStreamer:                   
  
  --       base:                      YES (ver 0.10.36)
  
  --       app:                       YES (ver 0.10.36)
  
  --       video:                     YES (ver 0.10.36)

  My question : Why opencv didn't link with the lastest libavutil, libavcodec, etc ...

• mmvideo : check frame dimensions

  14 décembre 2014, par Anton Khirnov

  mmvideo : check frame dimensions
  The frame size must be set by the caller and each dimension must be a
  
  multiple of 2.
  CC : libav-stable@libav.org
  
  Bug-ID : CVE-2014-8543
  
  Found-by : Mateusz "j00ru" Jurczyk and Gynvael Coldwind
  

  • [DH] libavcodec/mmvideo.c