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• FFmpeg Executing command error

  7 avril 2016, par Sanket990

  When I conversion mp4 to mp3 using ffmpeg command
  FFmpeg command Execution error- Working directory null IOEXception
  Executing below code.

  File path=Environment.getExternalStorageDirectory();    
  
  try {
  
              String ffmpegCommand="ffmpeg -i "+path.getAbsolutePath()+"/test/1.mp4 -f avi -acodec mp3 "+path.getAbsolutePath()+"/Songss.avi";
  
                Process ffmpegProcess = new ProcessBuilder(ffmpegCommand).redirectErrorStream(true).start();
  
  
  
                String line;
  
                BufferedReader reader = new BufferedReader(new InputStreamReader(ffmpegProcess.getInputStream()));
  
                Log.d("tag", "*******Starting FFMPEG");
  
  
  
                while((line = reader.readLine())!=null){
  
  
  
                    Log.d("tag", "***"+line+"***"); 
  
                }
  
                Log.d("tag","****ending FFMPEG****");
  
  
  
          } catch (IOException e) {
  
              e.printStackTrace(); }

  LogCat

  java.io.IOException: Error running exec(). Command: [/data/data/com.example.ffmpegcommandexecute/ffmpeg -i /mnt/sdcard/Songs.mp4 -vn -s 00:00:10 -acodec libmp3lame output.mp3]
  
   Working Directory: null Environment: [ANDROID_SOCKET_zygote=10, ANDROID_BOOTLOGO=1, EXTERNAL_STORAGE=/mnt/sdcard, ANDROID_ASSETS=/system/app, PATH=/sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin, ASEC_MOUNTPOINT=/mnt/asec, LOOP_MOUNTPOINT=/mnt/obb, BOOTCLASSPATH=/system/framework/core.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/apache-xml.jar:/system/framework/filterfw.jar, EXTERNAL_STORAGE_SD=/mnt/ext_card, EXTERNAL_STORAGE_ALL=/mnt/sdcard:/mnt/ext_card, WTLE_VERSION=3.2.0.patch6.1, ANDROID_DATA=/data, LD_LIBRARY_PATH=/vendor/lib:/system/lib, ANDROID_ROOT=/system, ANDROID_PROPERTY_WORKSPACE=9,65536]
  
      at java.lang.ProcessManager.exec(ProcessManager.java:211)
  
      at java.lang.ProcessBuilder.start(ProcessBuilder.java:195)
  
      at com.example.ffmpegcommandexecute.MJPEGFFMPEGTest$ProcessVideo.doInBackground(MJPEGFFMPEGTest.java:301)
  
      at com.example.ffmpegcommandexecute.MJPEGFFMPEGTest$ProcessVideo.doInBackground(MJPEGFFMPEGTest.java:1)
  
      at android.os.AsyncTask$2.call(AsyncTask.java:264)
  
      at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
  
      at java.util.concurrent.FutureTask.run(FutureTask.java:137)
  
      at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
  
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
  
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
  
      at java.lang.Thread.run(Thread.java:856)
  
   Caused by: java.io.IOException: No such file or directory
  
      at java.lang.ProcessManager.exec(Native Method)
  
      at java.lang.ProcessManager.exec(ProcessManager.java:209)

• linking libavcodec os x ffmpeg ApplicationServices.framework

  30 décembre 2015, par Grady Player

  Here is my error : (newer version of ffmpeg)

  dyld: Library not loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices
  
    Referenced from: /Users/me/path/to/lib/libavcodec.dylib
  
    Reason: Incompatible library version: libavcodec.dylib requires version 64.0.0 or later, but ApplicationServices provides version 1.0.0

  I have read the questions on SO that say you need to link ApplicationServices.framework... which I have done, it makes no difference...

  I have searched for other versions of that framework :

  $ mdfind ApplicationServices.framework
  
  /System/Library/Frameworks/ApplicationServices.framework

  just one...

  so then inspecting frameworks...

  $ otool -L /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices 
  
  /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices:
  
      /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices (compatibility version 1.0.0, current version 48.0.0)
  
      /System/Library/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics (compatibility version 64.0.0, current version 600.0.0)
  
  ...

  and libavcodec

  otool -L ../lib/libavcodec.dylib 
  
  ../lib/libavcodec.dylib:
  
      libavcodec.dylib (compatibility version 56.0.0, current version 56.60.100)
  
      @loader_path/libswresample.dylib (compatibility version 1.0.0, current version  ...
  
  ...
  
  /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices (compatibility version 64.0.0, current version 600.0.0)

  I am compiling everything with -mmacosx-version-min=10.7

  so maybe a bug in the toolchain ?

  compiler :

  clang -v
  
  Apple LLVM version 7.0.2 (clang-700.1.81)
  
  Target: x86_64-apple-darwin15.2.0
  
  Thread model: posix

  linker :

  ld -v
  
  @(#)PROGRAM:ld  PROJECT:ld64-253.9
  
  configured to support archs: armv6 armv7 armv7s arm64 i386 x86_64 x86_64h armv6m armv7k armv7m armv7em (tvOS)
  
  LTO support using: Apple LLVM 7.0.2 (clang-700.1.81)

• SharedLib dependency @ Mixed mode APK

  6 mars 2016, par NadavRub
  1. I am building a mixed mode Android project, the project is using the native ffmpeg
  2. The Libs are
     2.1. libavutil.so -> libavutil.so.51
     2.2. libavcodec.so -> libavcodec.so.54
     2.3. libavformat.so -> libavformat.so.54
     
  3. My Java code include the following JNI section to load the native libs :
     static
      System.loadLibrary("avutil") ;
      System.loadLibrary("avcodec") ;
      System.loadLibrary("avformat") ;
     
     
  4. ’libavcodec.so’ depends on ’libavutil.so.51’ AND NOT on ’libavutil.so’.
     
  5. When running my activity System.loadLibrary("avcodec") ; excepts with "could not load needed library ’libavutil.so.51’ for ’libavcodec.so’ (Library ’libavutil.so.51’ not found)"
  6. On my Android.mk I have the following section to have the native libs added to the APK :
     
     include $(CLEAR_VARS)
     LOCAL_MODULE := mylib
     LOCAL_SRC_FILES := ../../../mylib/libmylib.so
     include $(PREBUILT_SHARED_LIBRARY)
     
     
  7. replacing libmylib.so with libmylib.so.%some number% cause the build to fail with [LOCAL_SRC_FILES should point to a file ending with ".so"]
     
     
     Having the above in mind, how can I have libavcodec loading w/o the dependency problem ?
     
     • Can I fix libavcodec.so dependency to point to libavutil.so and not to libavutil.so.51 ?
       
     • Can I change Android.mk so it will be able to pack libavutil.so.51 ( non .SO extention ) ? will it then be loadable using ’System.loadLibrary’ ?.
       
       Any help will be appreciated !!!
       
       Nadav at Sophin