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• FFmpeg : java.lang.UnsatisfiedLinkError while calling Runnable class

  12 mars 2013, par Yuliya Tarasenko

  I need to take a picture file and an audio file and create a video.
  I know that it's possible to do with the help of

  Runtime.getRuntime().exec("ffmpeg -i image.jpeg -i audio.mp3 out.avi") 

  but only for rooted devices, so I've tried to create JNI wrapper for main() from ffmpeg.c and call it from my Activity like here : http://demo860.blogspot.com/2010/07/android-ffmpeg-dynamic-module-jni.html

  1.This code is in ffmpeg.c :

  int m_argc = 0;
  
  char *m_pargv [30];
  
  
  
  int dynamic_ffpmeg_main (int argc, char **argv);
  
  jint JNICALL Java_com_ccmedia_codec_ffmpeg_mod_1run ( JNIEnv *, jclass, jstring,     jstring );
  
  
  
  jint JNICALL Java_com_ccmedia_codec_ffmpeg_mod_1run ( JNIEnv *env, jclass class, jstring pj1, jstring pj2)
  
  {
  
      // as in http://demo860.blogspot.com/2010/07/android-ffmpeg-dynamic-module-jni.html
  
  }
  
  
  
  int dynamic_ffpmeg_main(int argc, char **argv)
  
  {
  
  // as in http://demo860.blogspot.com/2010/07/android-ffmpeg-dynamic-module-jni.html
  
  }
  
  
  
  int main(int argc, char **argv)
  
  {
  
      dynamic_ffpmeg_main ( argc, argv );
  
      return 0;
  
  }

  2.This code is in my .java :

  public class FFmpegCreator implements Runnable {
  
  
  
      static boolean m_bret = false;
  
  static String m_szconfig = " -i /sdcard/file.mpg -vcodec mpeg4 aaa.mpg";
  
  
  
  //public native String unimplementedStringFromJNI();
  
  
  
  static {
  
      try {
  
  
  
          System.out.println("[AdDBCache] Module load try ffmpeg : "
  
                  + System.getProperty("java.library.path"));
  
  
  
          // System.load("/sdcard/arm_and/bin/libffmpeg.so");
  
  
  
          System.loadLibrary("ffmpeg");
  
  
  
          System.out.println("[AdDBCache] Module load success");
  
  
  
      }
  
  
  
      catch (Exception e) {
  
  
  
          System.out.println("[AdDBCache] Module load err : "
  
                  + System.getProperty("java.library.path"));
  
  
  
      }
  
  
  
  }
  
  
  
  private static synchronized final native int Java_com_ccmedia_codec_ffmpeg_mod_1run(String name, String sztoken);
  
  
  
  public void set_config(String sz_config) {
  
  
  
      m_szconfig = sz_config;
  
  
  
  }
  
  
  
  public void run_core(String sz_file, String sz_token) {
  
  
  
      int n_stat;
  
      m_bret = false;
  
      n_stat = Java_com_ccmedia_codec_ffmpeg_mod_1run(m_szconfig, sz_token);
  
      m_bret = true;
  
  
  
  }
  
  
  
  public void run() {
  
  
  
      run_core("", "");
  
  
  
  }
  
  }

  3.And this in my Activity :

  FFmpegCreator f = new FFmpegCreator ();
  
  new Thread(f).start();

  But I have

  E/AndroidRuntime(25682): java.lang.UnsatisfiedLinkError: Java_com_ccmedia_codec_ffmpeg_mod_1run .

  And I can't understand why... FFmpeg build was successful...
  Could anyone help me, please ? I'll really appreciate if you could help me. Thank you.

• Convert avi to flowplayer compatible mp4

  19 novembre 2013, par Bill Johnston

  I'm trying to convert a .avi file to a flowplayer compatible .mp4 using the node module fluent-ffmpeg. Tried a bunch of different ways of encoding but this got the closest :

  var proc_avi = new ffmpeg({source: file})
  
  .withVideoCodec('copy')
  
  .withAudioCodec('copy')
  
  .saveToFile('output.mp4', function(stdout, stderr) {
  
      callback();
  
  });

  The video plays on flowplayer, and I can hear the audio, but the video is all white. Any idea how to encode this properly ?

• FFMpeg call from Node.js Results in 127

  27 février 2013, par user2009114

  I am having an issue with running an FFMpeg execution command from a Node.js (actually a Meteor) application. From my application I am trying to run :

  /usr/local/bin/ffmpeg-i,/Users//Documents//public/sample_iTunes.mov,-async,1,-acodec,libmp3lame,-b:a,128k,-vf,scale=min(1280\, iw) :-1,-b:v,1000k,-ar,44100,-ac,2,-vcodec,libx264,-x264opts,level=3.0,-profile:v,baseline,-preset:v,superfast,-threads,0,-flags,-global_header,-map,0,-f,segment,-segment_time,10,-segment_list,stream.m3u8,-segment_format,mpegts,-segment_list_flags,live,stream%05d.ts

  However, I get this :
  Transcoder exited with code 127
  chdir() : No such file or directory

  I am using a modified version of hls-vod module (https://github.com/mifi/hls-vod/). I have already tried changing the permissions of ffmpeg via chmod 777, as well as the /cache folder to which it encodes and the public folder containing the sample.mov. None of this seems to work. I installed FFmpeg using Homebrew so the usr/local/bin/ffmpeg is actually a sym link to usr/local/Cellar/..../ffmpeg. I don't know if this would play a part in it. Or perhaps it is something about Meteor.

  Any help would be much appreciated, thanks !