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• how to compress (shrink) the file size of the Mp4 video in android ?

  15 octobre 2013, par Sudharsan Linkan Tsr

  I have developed a application with video recording and uploading. Before upload i need to compress the video file. I'm using ffmpeg for pause/record video recording process in android. i expecting a more optimized small size video output for further process. Thanks in advance.

• Documentation on Guardian project ffmpeg android

  15 février 2017, par Azhagiri

  I got the Gaurdian Project FFMPEG android java from the following link

  https://github.com/guardianproject/android-ffmpeg-java

  Is there any good documents available to use the library for code. Its difficult to use without documentation. Plz help me.

• Working Directory : null Environment : null when trying to call compiled FFMPEG in android

  10 janvier 2013, par TharakaNirmana

  I have the compiled FFMPEG file. I try to combine an image and an audio clip to form a video clip. Function to combine those two are : ffmpeg -i /mnt/sdcard/KaraokeVideos/allmapeople.mp3 -i /mnt/sdcard/KaraokeVideos/Penguins.jpg /mnt/sdcard/KaraokeVideos/video_finale.mpg.

  I have used that in the code :

  public class MainActivity extends Activity {
  
  
  
      private Process process;
  
      String command, text;
  
  
  
      // load the library - name matches jni/Android.mk-jj
  
      //static {
  
  
  
          //System.loadLibrary("ffmpeg");
  
      //}
  
  
  
  
  
  
  
      @Override
  
      public void onCreate(Bundle savedInstanceState) {
  
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.activity_main);
  
          try {
  
              Execute();
  
          } catch (IOException e) {
  
              // TODO Auto-generated catch block
  
              e.printStackTrace();
  
          }
  
  
  
  
  
      } 
  
  
  
      private void Execute() throws IOException {
  
          // TODO Auto-generated method stub
  
  
  
          Process p = Runtime.getRuntime().exec("ffmpeg -i /mnt/sdcard/KaraokeVideos/allmapeople.mp3 -i /mnt/sdcard/KaraokeVideos/Penguins.jpg /mnt/sdcard/KaraokeVideos/video_finale.mpg");
  
          p.getInputStream();
  
      }

  But I get this exception in logcat :

  01-10 18:44:24.209: W/System.err(31790): java.io.IOException: Error running exec(). Command: [ffmpeg, -i, /mnt/sdcard/KaraokeVideos/allmapeople.mp3, -i, /mnt/sdcard/KaraokeVideos/Penguins.jpg, /mnt/sdcard/KaraokeVideos/video_finale.mpg] Working Directory: null Environment: null
  
  01-10 18:44:24.239: W/System.err(31790):    at java.lang.ProcessManager.exec(ProcessManager.java:211)
  
  01-10 18:44:24.239: W/System.err(31790):    at java.lang.Runtime.exec(Runtime.java:168)
  
  01-10 18:44:24.239: W/System.err(31790):    at java.lang.Runtime.exec(Runtime.java:241)
  
  01-10 18:44:24.249: W/System.err(31790):    at java.lang.Runtime.exec(Runtime.java:184)
  
  01-10 18:44:24.249: W/System.err(31790):    at com.mindtherobot.samples.ndkfoo.MainActivity.Execute(MainActivity.java:47)
  
  01-10 18:44:24.259: W/System.err(31790):    at com.mindtherobot.samples.ndkfoo.MainActivity.onCreate(MainActivity.java:35)
  
  01-10 18:44:24.259: W/System.err(31790):    at android.app.Activity.performCreate(Activity.java:4465)
  
  01-10 18:44:24.269: W/System.err(31790):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
  
  01-10 18:44:24.269: W/System.err(31790):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1919)
  
  01-10 18:44:24.269: W/System.err(31790):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980)
  
  01-10 18:44:24.289: W/System.err(31790):    at android.app.ActivityThread.access$600(ActivityThread.java:122)
  
  01-10 18:44:24.289: W/System.err(31790):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146)
  
  01-10 18:44:24.299: W/System.err(31790):    at android.os.Handler.dispatchMessage(Handler.java:99)
  
  01-10 18:44:24.309: W/System.err(31790):    at android.os.Looper.loop(Looper.java:137)
  
  01-10 18:44:24.309: W/System.err(31790):    at android.app.ActivityThread.main(ActivityThread.java:4340)
  
  01-10 18:44:24.319: W/System.err(31790):    at java.lang.reflect.Method.invokeNative(Native Method)
  
  01-10 18:44:24.319: W/System.err(31790):    at java.lang.reflect.Method.invoke(Method.java:511)
  
  01-10 18:44:24.329: W/System.err(31790):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
  
  01-10 18:44:24.339: W/System.err(31790):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
  
  01-10 18:44:24.339: W/System.err(31790):    at dalvik.system.NativeStart.main(Native Method)
  
  01-10 18:44:24.359: W/System.err(31790): Caused by: java.io.IOException: Permission denied
  
  01-10 18:44:24.359: W/System.err(31790):    at java.lang.ProcessManager.exec(Native Method)
  
  01-10 18:44:24.369: W/System.err(31790):    at java.lang.ProcessManager.exec(ProcessManager.java:209)
  
  01-10 18:44:24.379: W/System.err(31790):    ... 19 more
  
  01-10 18:44:24.699: D/gralloc_goldfish(31790): Emulator without GPU emulation detected.

  What is wrong here, any help would be great !