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• Firefox audio tag doubles length of OGG Vorbis

  22 mai 2014, par tomysshadow

  So, here I have a demo file from my website

  http://members.shaw.ca/darolynk/breakup/html5game/snd_music.ogg

  I am running off of Firefox Beta 30.0 and this issue does not persist in Google Chrome. In Firefox, when I play the file back, the length is displayed at around twice of its actual length as 32:13 when it is only 12:52 in length. Even worse, the audio stutters, playing one second of noise, one second of silence. This issue is not persistent in Chrome nor Opera. It is not a streaming issue (the song is streamed by the time it is played back in fact).

  I am wondering if this is an issue with the codec or with Firefox’s intrepretation of the codec, but more importantly, I want to know how to fix it. Some information about the file : the file is in OGG Vorbis format, 44100 Hz, 32 kbps Mono (yes, I am running out of storage space). It was encoded with SUPER, which in turn uses FFMpeg and MEncoder as necessary.

  This does not apply to all files of this format, making the issue even stranger. Are OGG Vorbis files over a certain length not allowed or interpreted differently by Firefox ? This must be the case for someone else and not just me...

  Any help is appreciated, thanks in advance !

• Issue in concatenating two video files using FFMPEG

  12 mai 2014, par intrepidkarthi

  I am trying to concatenate two mp4 files taken from gallery. I am getting issue with process execution failure. I have added the code and the error log. Using the ffmpeg library taken from guardian project.

  I am running this in Samsung Galaxy S3 device.

  The error is thrown in this particular line.

  ProcessBuilder pb = new ProcessBuilder(cmds);
  
  pb.directory(fileExec);
  
  Process process = pb.start();  

  When I replace the last line above with this,

  Process process = Runtime.getRuntime().exec("chmod 777 "+cmds.toArray(new String[cmds.size()]));

  It works with out the exception as shown below. But the output doesn’t seem to come.

  File concatenation Code :

      File fileVideoOutput = new File(getApplicationContext()
  
              .getExternalFilesDir("test") + "hello.mp4");
  
      fileVideoOutput.delete();
  
  
  
      File fileTmp = getApplicationContext().getCacheDir();
  
      File fileAppRoot = new File(getApplicationContext()
  
              .getApplicationInfo().dataDir);
  
  
  
      try {
  
          FfmpegController fc = new FfmpegController(fileTmp, fileAppRoot);
  
  
  
          ArrayList<clip> listVideos = new ArrayList<clip>();
  
          Clip clip = new Clip();
  
          clip.path = video1;
  
          fc.getInfo(clip);
  
          clip.duration = clip.duration;
  
          System.out.println("Clip1 duration " + clip.duration);
  
          listVideos.add(clip);
  
  
  
          Clip clip2 = new Clip();
  
          clip2.path = video2;
  
          fc.getInfo(clip2);
  
          clip2.duration = clip2.duration;
  
          System.out.println("Clip2 duration " + clip2.duration);
  
          listVideos.add(clip2);
  
  
  
          Clip clipOut = new Clip();
  
          clipOut.path = fileVideoOutput.getCanonicalPath();
  
  
  
          fc.concatAndTrimFilesMP4Stream(listVideos, clipOut, false, false,
  
                  new ShellUtils.ShellCallback() {
  
  
  
                      @Override
  
                      public void shellOut(String shellLine) {
  
  
  
                          System.out.println("fc>" + shellLine);
  
                      }
  
  
  
                      @Override
  
                      public void processComplete(int exitValue) {
  
  
  
                          if (exitValue &lt; 0)
  
                              System.err.println("concat non-zero exit: "
  
                                      + exitValue);
  
                      }
  
                  });
  
      } catch (Exception e1) {
  
          e1.printStackTrace();
  
      }
  
  </clip></clip>

  Error log :

  05-08 11:17:03.765: W/System.err(25209): java.io.IOException: Error running exec(). Command: [ffmpeg, -y, -i, /storage/emulated/0/DCIM/Camera/20140507_155713.mp4, -f, mpegts, -c, copy, -an, -bsf:v, h264_mp4toannexb, /data/data/com.yoyo.videoeditor/cache/0.ts] Working Directory: /data/data/com.yoyo.videoeditor/lib Environment: [VIBE_PIPE_PATH=/dev/pipes, ANDROID_ROOT=/system, EMULATED_STORAGE_SOURCE=/mnt/shell/emulated, LOOP_MOUNTPOINT=/mnt/obb, EMULATED_STORAGE_TARGET=/storage/emulated, ANDROID_BOOTLOGO=1, LD_LIBRARY_PATH=/vendor/lib:/system/lib, EXTERNAL_STORAGE=/storage/emulated/legacy, ANDROID_SOCKET_zygote=9, ANDROID_DATA=/data, PATH=/sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin, ANDROID_ASSETS=/system/app, ASEC_MOUNTPOINT=/mnt/asec, BOOTCLASSPATH=/system/framework/core.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/framework2.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/mms-common.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/apache-xml.jar:/system/framework/sec_edm.jar:/system/framework/seccamera.jar:/system/framework/scrollpause.jar:/system/framework/stayrotation.jar:/system/framework/smartfaceservice.jar:/system/framework/sc.jar:/system/framework/secocsp.jar:/system/framework/commonimsinterface.jar, ANDROID_PROPERTY_WORKSPACE=8,66560, SECONDARY_STORAGE=/storage/extSdCard:/storage/UsbDriveA:/storage/UsbDriveB:/storage/UsbDriveC:/storage/UsbDriveD:/storage/UsbDriveE:/storage/UsbDriveF, ANDROID_STORAGE=/storage]
  
  05-08 11:17:03.770: W/System.err(25209):    at java.lang.ProcessManager.exec(ProcessManager.java:211)
  
  05-08 11:17:03.770: W/System.err(25209):    at java.lang.ProcessBuilder.start(ProcessBuilder.java:195)
  
  05-08 11:17:03.770: W/System.err(25209):    at org.ffmpeg.android.FfmpegController.execProcess(FfmpegController.java:101)
  
  05-08 11:17:03.770: W/System.err(25209):    at org.ffmpeg.android.FfmpegController.execFFMPEG(FfmpegController.java:71)
  
  05-08 11:17:03.770: W/System.err(25209):    at org.ffmpeg.android.FfmpegController.execFFMPEG(FfmpegController.java:75)
  
  05-08 11:17:03.775: W/System.err(25209):    at org.ffmpeg.android.FfmpegController.convertToMP4Stream(FfmpegController.java:657)
  
  05-08 11:17:03.775: W/System.err(25209):    at org.ffmpeg.android.FfmpegController.concatAndTrimFilesMP4Stream(FfmpegController.java:1107)
  
  05-08 11:17:03.775: W/System.err(25209):    at com.yoyo.videoeditor.EditorActivity.mergeVideosOld(EditorActivity.java:271)
  
  05-08 11:17:03.775: W/System.err(25209):    at com.yoyo.videoeditor.EditorActivity.access$0(EditorActivity.java:243)
  
  05-08 11:17:03.775: W/System.err(25209):    at com.yoyo.videoeditor.EditorActivity$3.onClick(EditorActivity.java:85)
  
  05-08 11:17:03.775: W/System.err(25209):    at android.view.View.performClick(View.java:4475)
  
  05-08 11:17:03.775: W/System.err(25209):    at android.view.View$PerformClick.run(View.java:18786)
  
  05-08 11:17:03.780: W/System.err(25209):    at android.os.Handler.handleCallback(Handler.java:730)
  
  05-08 11:17:03.780: W/System.err(25209):    at android.os.Handler.dispatchMessage(Handler.java:92)
  
  05-08 11:17:03.780: W/System.err(25209):    at android.os.Looper.loop(Looper.java:176)
  
  05-08 11:17:03.780: W/System.err(25209):    at android.app.ActivityThread.main(ActivityThread.java:5419)
  
  05-08 11:17:03.780: W/System.err(25209):    at java.lang.reflect.Method.invokeNative(Native Method)
  
  05-08 11:17:03.785: W/System.err(25209):    at java.lang.reflect.Method.invoke(Method.java:525)
  
  05-08 11:17:03.785: W/System.err(25209):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
  
  05-08 11:17:03.785: W/System.err(25209):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
  
  05-08 11:17:03.785: W/System.err(25209):    at dalvik.system.NativeStart.main(Native Method)
  
  05-08 11:17:03.785: W/System.err(25209): Caused by: java.io.IOException: Permission denied
  
  05-08 11:17:03.785: W/System.err(25209):    at java.lang.ProcessManager.exec(Native Method)
  
  05-08 11:17:03.790: W/System.err(25209):    at java.lang.ProcessManager.exec(ProcessManager.java:209)
  
  05-08 11:17:03.790: W/System.err(25209):    ... 20 more

  Here is my ffmpeg commands as given in the ffmpeg tutorial page.

  ffmpeg -i input1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
  
  ffmpeg -i input2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
  
  ffmpeg -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc output.mp4

  FFMPEG library doesn’t seem to be working as expected. When I add commands and create output file using "touch" shell command file is being created. Still I am unable to see the output from ffmpeg as expected.

• Merge mp3 files using FFmpeg on Android

  13 mai 2017, par Ali

  I am trying to merge two mp3 files using this command :

  ffmpeg -i "concat:/storage/emulated/0/Recordings/oneone.mp3|/storage/emulated/0/Recordings/twone.mp3" -c copy /storage/emulated/0/Recordings/concated.mp3

  but get this error :

  "concat:/storage/emulated/0/Recordings/oneone.mp3|/storage/emulated/0/Recordings/twone.mp3": No such file or directory

  Even though the both files exist in the directory. I have written this command according to the documentation : https://trac.ffmpeg.org/wiki/Concatenate#protocol

  How do I fix this ? Please help me.