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• FFMPEG Command in Android Failing to Execute

  15 janvier 2015, par Zoe

  I’m trying to execute ffmpeg commands through an android app I’m developing.

  I found this post which has been somewhat useful :
  Problems with ffmpeg command line on android

  and I downloaded a static build of ffmpeg from here : http://ffmpeg.gusari.org/static/

  The problem is, when this code runs

  public void merge_video(){
  
  
  
  
  
        String[] ffmpegCommand = new String[5];
  
        ffmpegCommand[0] = "/data/data/com.example.zovideo/ffmpeg";
  
        ffmpegCommand[1] = "-i";
  
        ffmpegCommand[2] = "concat:storage/emulated/0/DCIM/Camera/VID30141106_211509.mp4|storage/emulated/0/DCIM/Camera/VID30141106_211509.mp4";
  
        ffmpegCommand[3] = "copy";
  
        ffmpegCommand[4] = "storage/emulated/0/DCIM/ZoVideo/Output.mp4";  
  
  
  
        try {
  
            Process ffmpegProcess = new ProcessBuilder(ffmpegCommand).redirectErrorStream(true).start();
  
  
  
            String line;
  
            BufferedReader reader = new BufferedReader(new InputStreamReader(ffmpegProcess.getInputStream()));
  
            Log.d(null, "*******Starting FFMPEG");
  
  
  
            while((line = reader.readLine())!=null){
  
  
  
                Log.d(null, "***"+line+"***"); 
  
            }
  
            Log.d(null,"****ending FFMPEG****");
  
  
  
      } catch (IOException e) {
  
          e.printStackTrace();
  
      }
  
    }

  It fails when trying to start the process with

  Java.io.IOException: Error running exec(). Command: [/data/data/com.example.zovideo/ffmpeg, -i, concat:storage/emulated/0/DCIM/Camera/VID30141106_211509.mp4|storage/emulated/0/DCIM/Camera/VID30141106_211509.mp4, copy, storage/emulated/0/DCIM/ZoVideo/Output.mp4] Working Directory: null Environment: [ANDROID_ROOT=/system, EMULATED_STORAGE_SOURCE=/mnt/shell/emulated, LOOP_MOUNTPOINT=/mnt/obb, LD_PRELOAD=libsigchain.so, ANDROID_BOOTLOGO=1, EMULATED_STORAGE_TARGET=/storage/emulated, EXTERNAL_STORAGE=/storage/emulated/legacy, SYSTEMSERVERCLASSPATH=/system/framework/services.jar:/system/framework/ethernet-service.jar:/system/framework/wifi-service.jar, ANDROID_SOCKET_zygote=10, PATH=/sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin, ANDROID_DATA=/data, ANDROID_ASSETS=/system/app, ASEC_MOUNTPOINT=/mnt/asec, BOOTCLASSPATH=/system/framework/core-libart.jar:/system/framework/conscrypt.jar:/system/framework/okhttp.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/ims-common.jar:/system/framework/mms-common.jar:/system/framework/android.policy.jar:/system/framework/apache-xml.jar, ANDROID_PROPERTY_WORKSPACE=9,0, ANDROID_STORAGE=/storage]

  I understand from the stackoverflow post I mentioned above that the ffmpeg static build needs to be on my device otherwise my app cannot use it.

  However I’m unsure how to get it in the /data/data/com.example.zovideo folder as needed.

  I have done is download the latest static ffmpeg build from http://ffmpeg.gusari.org/static/ and copied it into my libs/armeabi and libs/armeabi-v7a folders but this obviously hasn’t succeeded in getting into the data/data folder when my app is installed onto my device.
  (I feel like I’m being an idiot by copy/pasting the files but I don’t know what else to do. I don’t know how to compile it myself - I have compiled ffmpeg using a Roman10 tutorial but this produces .so files which from which I understand is not what I need)

  So I’m a little stuck.
  Any advice is greatly appreciated. Thanks

• FFMPEG SilenceDetect

  16 février 2015, par Sreenivas Shenoy

  I am trying to understand the output obtained from FFMPEG. A part of the output, I obtained is as shown below.

  [null @ 000000000449e740] Encoder did not produce proper pts, making some up
  
  [silencedetect @ 00000000048263a0] silence_start: -0.00356009
  
  [silencedetect @ 00000000048263a0] silence_end: 11.4242 | silence_duration:11.4278
  
  [silencedetect @ 00000000048263a0] silence_start: 11.7457
  
  [silencedetect @ 00000000048263a0] silence_end: 11.8422 | silence_duration: 0.0964399
  
  [silencedetect @ 00000000048263a0] silence_start: 12.1173
  
  .....
  
  [silencedetect @ 00000000048263a0] silence_end: 113.708 | silence_duration: 0.14288
  
  [silencedetect @ 00000000048263a0] silence_start: 113.751
  
  frame= 3254 fps=297 q=0.0 Lsize=N/A time=00:02:10.17 bitrate=N/A    
  
  video:305kB audio:22424kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

  I understand that, silence_start gives the timestamp at which silence in the audio file is detected and silence_end gives the ending timestamp. I have two questions here

  1) How come the timestamp for the first silence_start has a negative value ?(-0.00356009)

  2)In the last line of the output I could see the silence_start is at 113.751, but unable to see the silence_end. Why is it so ?

• FFMPEG issues for android lollipop

  18 février 2015, par Arslan Ahmad

  I was using the FFmpeg library in my application from the last 2 years and it still working fine on old version. It wont even work on android lollipop.

  I was using these library before.

  String[] libraryAssets = { "ffmpeg", "libavcodec-55.so", "libavcodec.so",
  
              "libavfilter-4.so", "libavfilter.so", "libavformat-55.so",
  
              "libavformat.so", "libavutil-52.so", "libavutil.so",
  
              "libswresample-0.so", "libswresample.so", "libswscale-2.so",
  
              "libswscale.so"
  
  
  
      };

  And I have got the answer from other link that if we use these 3 libraries it will work on lollipop aswell

  "liblicense-jni.so,","libloader-jni.so","libvideokit.so"

  But still It didnot resolve yet.
  Please check this log.

   ***Starting FFMPEG***
  
   ***error: only position independent executables (PIE) are supported.***
  
   ***Ending FFMPEG***

  Any help or any update in library ??