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• Can not open file from avformat_open_input in android

  10 novembre 2013, par ssrp

  I have called av_register_all() function in my onLoad() function, but I get the -1330794744 return value when I try to open a .mp4 file in my sdcard. what would be the problem please help.

• Running FFMPEG in Android [duplicate]

  1er février 2013, par user2028081

  Possible Duplicate :
  ffmpeg for a android (using tutorial : “ffmpeg and Android.mk”)

  I have tried several things running FFMPEG in android, searched around the whole net,No fruitful or direct solutions available. Refereed this and related was very helpful though.

  Moreover currently I am able to build the FFMPEG in Ubuntu 12. Created all the .SO binary everything.

  My question is, how do I change the ffmeg.c file which will enable me to pass ffmpeg commands ?

  According to this by following steps this is possible.

  With the design above, the change for ffmpeg.c is simple.

  Change the main(int argc, char **argv) function prototype to a java JNI interface prototype that Android java code can call.
  
  Change the output to stdout to the text files we created.
  
  Comment out a few lines that cause the compilation error.

  But I'm unable to change the main and how it would be.

  Please help me on this. If somebody have already achieved this thing.

• How to install JavaCV on Android and use FrameGrabber

  9 octobre 2016, par Mark

  Could someone tell me where I’m doing wrong ? These are the steps that I have followed :

  1. Downloaded the adt-bundle-windows from android developer website
  2. Created a new project and a libs/armeabi folder

  3. Extract all the *.so files from javacv-android-arm.jar, opencv-2.4.3-android-arm.zip, and ffmpeg-1.0-android-arm.zip directly into the newly created "libs/armeabi" folder, without creating any new subdirectories.

     (A part that I don’t understand is "Extract all the *.so files from javacv-android-arm.jar", I simply inserted the javacv-android-arm.jar file inside libs/armeabi folder)

  4. Navigated to Project > Properties > Java Build Path > Libraries and click "Add JARs...".
  5. Selected both javacpp.jar and javacv.jar from the newly created "libs" folder.

  After that I have downloaded OpenCV2.4.3 from here and ffmpeg from here and extracted the files on my C :/ root.
  Finally after setting my system path...,

  C:\opencv\build\x64\vc10\bin;C:\ffmpeg-64\bin;C:\Program Files\Java\jdk1.7.0_10\bin

  ...if I try to use simply FrameGrabber in my Android application...

  import com.googlecode.javacv.FFmpegFrameGrabber;
  
  import com.googlecode.javacpp.Loader;
  
  import com.googlecode.javacv.*;
  
  import com.googlecode.javacv.cpp.*;
  
  import static com.googlecode.javacv.cpp.opencv_core.*;
  
  import static com.googlecode.javacv.cpp.opencv_imgproc.*;
  
  import static com.googlecode.javacv.cpp.opencv_calib3d.*;
  
  import static com.googlecode.javacv.cpp.opencv_objdetect.*;
  
  
  
  import android.os.Bundle;
  
  import android.app.Activity;
  
  import android.view.Menu;
  
  
  
  public class MainActivity extends Activity {
  
  
  
      @Override
  
      protected void onCreate(Bundle savedInstanceState) {
  
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.activity_main);
  
  
  
          FFmpegFrameGrabber i = new FFmpegFrameGrabber("/mnt/sdcard/SinglePerson.avi"); 
  
      }

  ...I get the following errors :

  01-29 17:59:26.976: E/AndroidRuntime(30656): FATAL EXCEPTION: main
  
  01-29 17:59:26.976: E/AndroidRuntime(30656): java.lang.NoClassDefFoundError: com.googlecode.javacv.FFmpegFrameGrabber
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at com.example.xxxxxxxxx.MainActivity.onCreate(MainActivity.java:23)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.Activity.performCreate(Activity.java:4465)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.ActivityThread.access$600(ActivityThread.java:123)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.os.Handler.dispatchMessage(Handler.java:99)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.os.Looper.loop(Looper.java:137)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.ActivityThread.main(ActivityThread.java:4424)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at java.lang.reflect.Method.invokeNative(Native Method)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at java.lang.reflect.Method.invoke(Method.java:511)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
  
  01-29 17:59:26.976: E/AndroidRuntime(30656):    at dalvik.system.NativeStart.main(Native Method)

  Someone can help me please ?