title: Working Directory: null Environment: null
body: <p>I am trying to use ffmpeg.so on Android I am getting Working Directory: null Environment: null error.</p>
  
  <pre><code>try {
      Process p = Runtime.getRuntime().exec("/data/data/com.example.foo/files/ffmpeg -f image2 -i "
  + Environment.getExternalStorageDirectory().getAbsolutePath() + "/img/b%d.jpg " 
  + Environment.getExternalStorageDirectory().getAbsolutePath() + "/DCIM/Camera/a444.mp4");   
  } catch (IOException e) {
      e.printStackTrace();
  }
  </code></pre>
  
  <p>ERROR LOG</p>
  
  <pre><code>04-09 01:50:45.683: I/Adreno-EGL(18393): &lt;qeglDrvAPI_eglInitialize:320&gt;: EGL 1.4 QUALCOMM Build: I0404c4692afb8623f95c43aeb6d5e13ed4b30ddbDate: 11/06/13
  04-09 01:50:45.713: D/OpenGLRenderer(18393): Enabling debug mode 0
  04-09 01:53:56.487: D/dalvikvm(18551): Trying to load lib /data/app-lib/com.example.sodeneme-1/libffmpeg.so 0x423d7d00
  04-09 01:53:56.487: D/dalvikvm(18551): Added shared lib /data/app-lib/com.example.sodeneme-1/libffmpeg.so 0x423d7d00
  04-09 01:53:56.487: D/dalvikvm(18551): No JNI_OnLoad found in /data/app-lib/com.example.sodeneme-1/libffmpeg.so 0x423d7d00, skipping init
  04-09 01:53:56.537: W/System.err(18551): java.io.IOException: Error running exec(). Command: [/data/data/com.example.sodeneme/files/ffmpeg, -f, image2, -i, /storage/emulated/0/img/b%d.jpg, /storage/emulated/0/DCIM/Camera/a444.mp4] Working Directory: null Environment: null
  04-09 01:53:56.537: W/System.err(18551):    at java.lang.ProcessManager.exec(ProcessManager.java:211)
  04-09 01:53:56.537: W/System.err(18551):    at java.lang.Runtime.exec(Runtime.java:173)
  04-09 01:53:56.537: W/System.err(18551):    at java.lang.Runtime.exec(Runtime.java:246)
  04-09 01:53:56.537: W/System.err(18551):    at java.lang.Runtime.exec(Runtime.java:189)
  04-09 01:53:56.537: W/System.err(18551):    at com.example.sodeneme.MainActivity.onCreate(MainActivity.java:40)
  04-09 01:53:56.537: W/System.err(18551):    at android.app.Activity.performCreate(Activity.java:5231)
  04-09 01:53:56.537: W/System.err(18551):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
  04-09 01:53:56.537: W/System.err(18551):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
  04-09 01:53:56.537: W/System.err(18551):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
  04-09 01:53:56.537: W/System.err(18551):    at android.app.ActivityThread.access$800(ActivityThread.java:135)
  04-09 01:53:56.537: W/System.err(18551):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
  04-09 01:53:56.537: W/System.err(18551):    at android.os.Handler.dispatchMessage(Handler.java:102)
  04-09 01:53:56.537: W/System.err(18551):    at android.os.Looper.loop(Looper.java:136)
  04-09 01:53:56.537: W/System.err(18551):    at android.app.ActivityThread.main(ActivityThread.java:5017)
  04-09 01:53:56.537: W/System.err(18551):    at java.lang.reflect.Method.invokeNative(Native Method)
  04-09 01:53:56.537: W/System.err(18551):    at java.lang.reflect.Method.invoke(Method.java:515)
  04-09 01:53:56.537: W/System.err(18551):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
  04-09 01:53:56.537: W/System.err(18551):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
  04-09 01:53:56.537: W/System.err(18551):    at dalvik.system.NativeStart.main(Native Method)
  04-09 01:53:56.547: W/System.err(18551): Caused by: java.io.IOException: No such file or directory
  04-09 01:53:56.547: W/System.err(18551):    at java.lang.ProcessManager.exec(Native Method)
  04-09 01:53:56.547: W/System.err(18551):    at java.lang.ProcessManager.exec(ProcessManager.java:209)
  04-09 01:53:56.547: W/System.err(18551):    ... 18 more
  04-09 01:53:56.577: I/Adreno-EGL(18551): &lt;qeglDrvAPI_eglInitialize:320&gt;: EGL 1.4 QUALCOMM Build: I0404c4692afb8623f95c43aeb6d5e13ed4b30ddbDate: 11/06/13
  04-09 01:53:56.607: D/OpenGLRenderer(18551): Enabling debug mode 0
  </code></pre>
  
  <p>PERMISSIONS</p>
  
  <pre><code>&lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt;
  &lt;uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /&gt;
  &lt;uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" /&gt;
  &lt;uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" /&gt;
  &lt;uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" /&gt;
  </code></pre>