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• ffmpeg for android guardian project build failing

  20 octobre 2015, par Wikki

  I am a noob and i am trying to compile a static build of ffmpeg for android using "guardian project" repo. (https://github.com/guardianproject/android-ffmpeg)

  I have followed the steps mentioned in there, but it fail all the time. I am using Ubuntu 11.10 64 bit using vmware. Android NDk r8e 32 bit.

  Here is the complete log of android-ffmpeg compilation. http://bit.ly/1mgZqeV

  Also have a look at the terminal command window showing the errors......

  It seems that make files are not done.

  

  Please help me if some one has more clear understanding.

• FFMPEG PROJECT BATCH [duplicate]

  30 janvier 2020, par PierDEVIT

  I need to transform with FFmpeg every file from a folder to another.

  The video bitrate must be the best for the web.
  Codec h264 or h265 ?
  Frame-rates and resolutions size must be no change from the source.

  How can I do it ?

• How do I use ffmpeg4android in an ADT project ?

  16 janvier 2013, par mystafer

  I used the project FFmpeg4Android on sourceforge to build the FFmpeg .so shared library files. However, I am having trouble using them in an ADT Java application. I created a simple JNI call that attempts to call av_register_all and I get library errors.

  When I run the application on my Nexus 7 I am told that it is unable to load library libavformat-HEAD-1.0.so

  So I tried to load this via the System.loadLibrary method and I was unable to find libavcodec-HEAD-1.0.so. Working my way back in this manner I eventually attempted to load libavutil-HEAD-1.0.so which yielded an error 'cannot locate symbol "__strchr_chk"'.

  This is my Java class :

  public class LibavcodecTest {
  
      public static native void avRegisterAll();
  
  
  
      static {
  
          System.loadLibrary("avutil-HEAD-1.0");
  
          System.loadLibrary("avcodec-HEAD-1.0");
  
          System.loadLibrary("avformat-HEAD-1.0");
  
          System.loadLibrary("LibavcodecTest");
  
      }
  
  }

  Update

  I contacted the developer that maintains ffmpeg4android and he was able to direct me to change the version of the android source I was building against to the same as my device which worked to allow my to call av_register_all successfully.

  However, now I get a crash calling avformat_open_input where I receive "Fatal signal 11 (SIGSEGV)".

  My search on the web makes me believe this is a memory access issue. Does anybody know if this may be resolved by loading the shared libraries differently ?