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• How to make linker ld find a file ?

  21 avril 2015, par haxan7

  I am cross compiling opencv with FFmpeg and it is throwing the following error :

  /root/work/codesourcery/arm-2013.05/bin/../lib/gcc/arm-none-linux-gnueabi/4.7.3/../../../../arm-none-linux-gnueabi/bin/ld : warning : libavcodec.so.56, needed by ../../lib/libopencv_highgui.so.2.4.10, not found (try using -rpath or -rpath-link)

  I have the libavcodec.so.56, and have put the relevant path to $PKG_CONFIG_PATH.

  doing a pkg-config —list-all | grep avcodec returns

  libavcodec                     libavcodec - FFmpeg codec library

  ls -al libs folder returns

  -rw-r--r-- 1 root root 93416352 Apr 21 06:57 libavcodec.a
  
  lrwxrwxrwx 1 root root       23 Apr 21 06:57 libavcodec.so -> libavcodec.so.56.34.100*
  
  lrwxrwxrwx 1 root root       23 Apr 21 06:57 libavcodec.so.56 -> libavcodec.so.56.34.100*
  
  -rwxr-xr-x 1 root root 10949836 Apr 21 06:57 libavcodec.so.56.34.100*

  Here are the contents of libavcodec.pc file

  prefix=/root/ARM_Install
  
  exec_prefix=${prefix}
  
  libdir=${prefix}/lib
  
  includedir=${prefix}/include
  
  
  
  Name: libavcodec
  
  Description: FFmpeg codec library
  
  Version: 56.34.100
  
  Requires: 
  
  Requires.private: libswresample >= 1.1.100, libavutil >= 54.22.101
  
  Conflicts:
  
  Libs: -L${libdir}  -lavcodec 
  
  Libs.private: -lxvidcore -lx264 -lm -pthread -ldl
  
  Cflags: -I${includedir}

  How can I make the liker find this file ?

• fatal Error Issues - jhotovy's version of android-ffmpeg-x264 - github.com/jhotovy/android-ffmpeg.git

  3 août 2012, par user1545779

  The following is the output for issuing init-submodules.sh. I keep receiving this

  error:fatal error:
  
      Unable to checkout '15e02184e136e47ecff01bf56aca
  
      The49d8e2646fb4&#39; in submodule path &#39;Project/jni/ffmpeg&#39;<br />

  Has anyone run jhotovy's version of halfninja's code successfully so far ? Any help in resolving this issue will be greatly appreciated
  

  My screen output :

      gipsyblues@android-general:~/android-ffmpeg$ ./init-submodules.sh <br />
  
      ls: cannot access ./jni/ffmpeg/*: No such file or directory<br />
  
      Submodule &#39;ffmpeg&#39; (git://git.videolan.org/ffmpeg.git) registered for path   Project/jni     /ffmpeg&#39;<br />
  
      Submodule &#39;x264&#39; (git://git.videolan.org/x264.git) registered for path &#39;Project/jni    /x264&#39;<br />
  
      user.name=xxxxxxx <br />
  
      user.email=yyyyyyy <br />
  
      core.repositoryformatversion=0<br />
  
      core.filemode=true<br />
  
      core.bare=false<br />
  
      core.logallrefupdates=true<br />
  
      remote.origin.fetch=+refs/heads/*:refs/remotes/origin/*<br />
  
      remote.origin.url=git://github.com/jhotovy/android-ffmpeg.git
  
      branch.master.remote=origin<br />
  
      branch.master.merge=refs/heads/master<br />
  
      submodule.ffmpeg.url=git://git.videolan.org/ffmpeg.git<br />
  
      submodule.x264.url=git://git.videolan.org/x264.git<br />
  
      Initialized empty Git repository in /home/gipsyblues/android-ffmpeg/Project/jni/ffmpeg  /.git/<br />
  
      remote: Counting objects: 237417, done.<br />
  
      remote: Compressing objects: 100% (57251/57251), done.<br />
  
      remote: Total 237417 (delta 186957), reused 228690 (delta 179782)<br />
  
      Receiving objects: 100% (237417/237417), 59.89 MiB | 5.22 MiB/s, done.<br />
  
      Resolving deltas: 100% (186957/186957), done.<br />
  
      fatal: reference is not a tree: 15e02184e136e47ecff01bf56aca49d8e2646fb4<br />
  
      Unable to checkout &#39;15e02184e136e47ecff01bf56aca49d8e2646fb4&#39; in submodule path    &#39;Project/jni/ffmpeg&#39;<br />
  
     gipsyblues@android-general:~/android-ffmpeg$ <br />

  I have successfully run the original halfninja version which is also at githuib.com/halfninja/android-ffmpeg-x264.<br> I have searched all over the Internet and i am not finding any reference to this issue. Anyone had any success with that implementation

• Android - FFmpeg Alternative to get video frames. (Due to licensing)

  3 juillet 2012, par Fresh_Meat

  Scenario :

  I am working on a Android project where in one particular openGL page, I display videos.

  FFmpeg is used to obtain frames from videos(as openGL does not support video as texture) and I am using the frames to obtain a video effect.

  I am using pre-compiled FFmpeg binaries in the project.

  ---

  I was not aware of the level of legal implications of using the FFmpeg library.
  My superior brought this to my notice FFmpeg legal reference

  Problem :

  I am no legal expert, so only thing that I understood is that using FFmpeg in a comercial free app (but service needs to be paid for) is going to get me and my company into trouble :(

  In no way the source or any part of the source of the project can be released.(The client is very strict about this.)

  ---

  Questions ?

  1) Is there any alternative to FFmpeg (which uses Apache or MIT license) that I can use to obtain video frames ?
  
  2) In openGL, getting the video frames and looping through - Is it the only way of playing a video ? Is there any alternate method to achieve this functionality ?