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• How do I compile a c++ repository with multiple libraries [on hold]

  12 septembre 2017, par Firat Oezcan

  before someone comes and tells me that I should just google stuff first. I did. I didn’t really found anything that suits my needs and also asked my colleagues and other graduates and no one really could help me out.

  It is about this repository specifically : https://github.com/facebook/transform360

  Yes, there are literal instructions on how to do it but they are, honestly, too vague for me. I know that sounds really weird but I guess I’m just spoiled by Unity3D and other IDEs that did most of it for me.

  I don’t understand what is meant with :
  Build .cpp and .h files in Transform360, together with openCV, as a library, where these files are dependent on openCV
  and this line
  Add the Transform360 library file to the extra-libs of ffmpeg.

  I would love if anyone could help me out or better, explain to me how something of this kind is done correctly so I don’t have to ask again. Or really, just point me to information that already exists.
  Thanks in advance

• Merge two audio file using ffmpeg

  24 novembre 2017, par ajay dhadhal

  I want to merge Two mp3 file using ffmpeg library.but not succsesfull.Following is my code

  GeneralUtils.checkForPermissionsMAndAbove(MergerActivity.this, true);
  
  LoadJNI vk = new LoadJNI();
  
  try {
  
      String workFolder = getApplicationContext().getFilesDir().getAbsolutePath();
  
      //String[] complexCommand = {"ffmpeg","-i", "/sdcard/videokit/in.mp4"};
  
      String[] complexCommand = {"ffmpeg -i \"concat: /storage/internalsd/Music/02 Love Dose.mp3| /storage/internalsd/Music/02 Love Dose.mp3\" -acodec copy output.mp3"};
  
  
  
      vk.run(complexCommand , workFolder , getApplicationContext());
  
      Log.i("test", "ffmpeg4android finished successfully");
  
  } catch (Throwable e) {
  
      Log.e("test", "vk run exception.", e);
  
  }

  The error log display following

  vk run exception.
  
  
  
  com.netcompss.ffmpeg4android.CommandValidationException
  
      at com.netcompss.loader.LoadJNI.run(LoadJNI.java:39)
  
      at com.netcompss.loader.LoadJNI.run(LoadJNI.java:55)
  
      at com.handyaudio.MergerActivity.onMergeButtonClicked(MergerActivity.java:356)
  
      at com.handyaudio.MergerActivity.onClick(MergerActivity.java:272)
  
      at android.view.View.performClick(View.java:4446)
  
      at android.view.View$PerformClick.run(View.java:18437)
  
      at android.os.Handler.handleCallback(Handler.java:733)

  Please help to solve error.

• ffmpeg and VFR vs fixed

  1er décembre 2017, par B Davidson

  I was changing some music videos from VFR to 30000/1001 using

  ffmpeg.exe -y -i "C:\Temp\Faith Hill - The Way You Love Me.mp4" -c:v libx264 -crf:v 23 -filter:v fps="fps=30000/1001" -c:a ac3 -b:a 256k -ar 48000 "D:\Faith Hill - The Way You Love Me.mkv"

  Using mediainfo, the file still appeared to be VFR and not the expected 29.97
  ffprobe reported 30000/1001 and MPC reported 29.97.
  I contacted mediainfo and was told it is a bug in ffmpeg, so now I am here.

  Read all about it here - https://sourceforge.net/p/mediainfo/discussion/297609/thread/e0ef2ce9/?limit=25

  Any thoughts on the chance of a bug in ffmpeg ??