title: Problems with ffmpeg command line on android
body: <p>I managed to compile the ffmpeg Static build. But when I am trying to call the ffmpeg command line I get a Java IOException: No such file or Directory.</p>
  
  <p>My code is as follows:</p>
  
  <pre><code>public void merge_video(View view){
  
      if(ffmpeg_file.exists()){
            Log.d(null, "ffmpeg exists");
        }else{
            Log.d(null, "Could not locate ffmpeg in the folder");
        }
  
        File file1 = new File("/mnt/sdcard/com.ffmpeg_test/VID_3_25_2013_12_22.mp4");
        if(file1.exists()){
            Log.d(null,"File 1 exists");
        }
        File file2 = new File("/mnt/sdcard/com.ffmpeg_test/VID_3_25_2013_12_28.mp4");
        if(file2.exists()){
            Log.d(null,"File 2 exists");
        }
  
        String[] ffmpegCommand = new String[5];
        ffmpegCommand[0] = "/mnt/sdcard/com.ffmpeg_test/ffmpeg";
        ffmpegCommand[1] = "-i";
        ffmpegCommand[2] = "concat:/mnt/sdcard/com.ffmpeg_test/VID_3_25_2013_12_22.mp4|/mnt/sdcard/com.ffmpeg_test/VID_3_25_2013_12_28.mp4";
        ffmpegCommand[3] = "copy";
        ffmpegCommand[4] = "/mnt/sdcard/com.ffmpeg_test/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();
      }
    }
  </code></pre>
  
  <p>The LogCat print is as follows:</p>
  
  <pre><code>03-27 20:41:10.522: W/System.err(24709): java.io.IOException: Error running exec(). Command: [/mnt/sdcard/com.ffmpeg_test/ffmpeg, -i, concat:/mnt/sdcard/com.ffmpeg_test/VID_3_25_2013_12_22.mp4|/mnt/sdcard/com.ffmpeg_test/VID_3_25_2013_12_28.mp4, copy, /mnt/sdcard/com.ffmpeg_test/output.mp4] Working Directory: null Environment: [ANDROID_SOCKET_zygote=13, TMPDIR=/data/local/tmp, 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/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/core-junit.jar, USBHOST_STORAGE=/mnt/sdcard/usbStorage, ANDROID_DATA=/data, LD_LIBRARY_PATH=/vendor/lib:/system/lib, ANDROID_ROOT=/system, ANDROID_PROPERTY_WORKSPACE=12,32768, EXTERNAL_STORAGE2=/mnt/sdcard/external_sd]
  03-27 20:41:10.522: W/System.err(24709):    at java.lang.ProcessManager.exec(ProcessManager.java:224)
  03-27 20:41:10.522: W/System.err(24709):    at java.lang.ProcessBuilder.start(ProcessBuilder.java:202)
  03-27 20:41:10.522: W/System.err(24709):    at com.example.ffmpeg_test.MainActivity.merge_video(MainActivity.java:106)
  03-27 20:41:10.522: W/System.err(24709):    at java.lang.reflect.Method.invokeNative(Native Method)
  03-27 20:41:10.522: W/System.err(24709):    at java.lang.reflect.Method.invoke(Method.java:507)
  03-27 20:41:10.527: W/System.err(24709):    at android.view.View$1.onClick(View.java:2149)
  03-27 20:41:10.527: W/System.err(24709):    at android.view.View.performClick(View.java:2538)
  03-27 20:41:10.527: W/System.err(24709):    at android.view.View$PerformClick.run(View.java:9152)
  03-27 20:41:10.527: W/System.err(24709):    at android.os.Handler.handleCallback(Handler.java:587)
  03-27 20:41:10.527: W/System.err(24709):    at android.os.Handler.dispatchMessage(Handler.java:92)
  03-27 20:41:10.527: W/System.err(24709):    at android.os.Looper.loop(Looper.java:123)
  03-27 20:41:10.527: W/System.err(24709):    at android.app.ActivityThread.main(ActivityThread.java:3691)
  03-27 20:41:10.527: W/System.err(24709):    at java.lang.reflect.Method.invokeNative(Native Method)
  03-27 20:41:10.527: W/System.err(24709):    at java.lang.reflect.Method.invoke(Method.java:507)
  03-27 20:41:10.532: W/System.err(24709):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:847)
  03-27 20:41:10.532: W/System.err(24709):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
  03-27 20:41:10.537: W/System.err(24709):    at dalvik.system.NativeStart.main(Native Method)
  03-27 20:41:10.537: W/System.err(24709): Caused by: java.io.IOException: No such file or directory
  03-27 20:41:10.537: W/System.err(24709):    at java.lang.ProcessManager.exec(Native Method)
  03-27 20:41:10.537: W/System.err(24709):    at java.lang.ProcessManager.exec(ProcessManager.java:222)
  03-27 20:41:10.537: W/System.err(24709):    ... 16 more
  03-27 20:41:36.057: W/KeyCharacterMap(24709): No keyboard for id 0
  03-27 20:41:36.057: W/KeyCharacterMap(24709): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
  </code></pre>